What actually matters when you choose Part 91 aircraft management

Five things decide the outcome. Each one should produce a decision, not a good feeling.

• Scale and focus. Does the provider work at your size? Ask how many aircraft of your make and model they support today and who your daily contact is, by name and role. A company built to run 40 jets for institutional owners works differently than one built for an operator with one to five aircraft.
• Day-to-day scope. A full back office covers 24 hour flight coordination, scheduling and dispatch, flight following, crew coordination, trip logistics, vendor and FBO management, fuel planning, compliance documentation and financial oversight of trip costs. WingLeader lists that scope for operations running one to five aircraft, including hotels, rental cars and catering, invoices when needed, and post trip reports. Whatever a provider doesn’t name stays on your desk.
• Compliance discipline. Crew currency, inspection due items, AD status and dry lease paperwork should come up on request in under a minute. Discipline is a filing system, not a promise.
• Safety evidence. Look for an IS-BAO stage, an ARGUS or WYVERN rating with a date on it, or a written safety management system with documented risk assessments and shareable findings. A safety claim with no audit trail behind it is sales copy.
• Contract clarity. Scope, exclusions, audit rights, records ownership and termination, written in plain terms, before you sign anything.

Owners stay under Part 91 for control, privacy and a simpler maintenance program. You pick the crew, you set the schedule, and nobody else sells seats on your aircraft. The tradeoff is that the liability stays with you. That’s why these five get tested in the first two conversations.

What should I ask about Part 91 focus and operational control?

Under Part 91 you or your lessee stay the operator, and the provider is a vendor supporting you. A Part 135-style manager usually puts the aircraft on its certificate, which moves operational control, the maintenance program and the crew duty rules to the certificate holder. Both models are legal. They put the liability in different places, and the full comparison on cost, risk and control is in “Part 91 vs Part 135: Cost, Risk, Control.”

Ask directly: does this arrangement leave operational control with me, and does any part of the proposal depend on my aircraft going onto your certificate? The FAA’s own fractional rules state the principle. According to the eCFR, an owner in operational control of a program flight is ultimately responsible for safe operations and for compliance with all applicable requirements of the chapter.

Put plain scenarios to the provider and listen for a plain answer:

• Your LLC owns the jet, your operating company’s executives fly on it, and the company pays the LLC under a written dry lease while the lessee directs the flights. That’s Part 91.
• You fly your own aircraft with your family and pay all the costs yourself. That’s Part 91.
• A third party pays you or your LLC for a flight and you supply the aircraft and the crew together. That becomes Part 135, certificate or not.
• The provider assigns the crew, sets the schedule and bills the passengers. Operational control has moved, and the paperwork has to say so.

Good answer: “You remain the operator, here are the documents we maintain, here are the decisions that stay with you, and nothing in this proposal depends on charter revenue.”

Bad answer: “We handle all of that for you,” with no document list and a charter assumption buried in the fee page.

WingLeader sits in the middle row and says it’s probably not the right fit for someone who wants a turnkey management company, pointing instead to firms like Clay Lacy, Solairus or Jet Aviation. Self-selection like that is a good sign from any provider.

What should I ask about safety certifications and audit history?

Ask for the registration or audit certificate, the date of the last audit, the name of the auditing organization, and whether the findings and corrective action plan are shareable. IS-BAO registration, ARGUS ratings and WYVERN Wingman all mean something, but only with a current date and a finding list attached. IS-BAO is built in three progressive stages, and Stage 3 requires a more advanced organization-wide safety culture.

For a one to five aircraft operation, a full audit program may be more structure than the operation carries today. In that case ask what does exist: a written safety management system, documented risk assessment before non-standard trips, and a record of it. WingLeader lists safety management systems, risk management practices and formalized procedures with a documented record among its services, which is the minimum shape to look for.

A good answer sounds like: “Here’s our SMS manual, here’s last year’s audit report with four findings, and here’s how each one was closed.”

Pause if you hear: “We have a strong safety culture” with nothing to hand you.

What should I ask about crew quality, training, and scheduling discipline?

Part 91 generally sets no flight time, duty or rest limits for non-commercial flights, so protection often depends on contracts and procedures. Ask who verifies crew legality before a trip is confirmed, what training standard the crew is held to, and who has the final say when you want another leg.

Make the provider walk you through the workflow, step by step:

1. Trip request. The owner or the flight department sends dates, legs and passengers, and it lands with a named coordinator rather than a shared inbox.
2. Legality check before scheduling. Credentials, currency, training records and availability get verified for the assigned crew first. At WingLeader, a trip with a crew member out of currency doesn’t get scheduled until it’s fixed, and the rule is stated plainly: before a trip goes on the schedule, the crew is legal to fly it.
3. Assignment and confirmation. Crew availability, the duty projection for the day and aircraft status get checked together, then the trip is confirmed and logistics start.
4. The owner pushes for extra legs. The request goes back through the same duty math before anything is promised to a passenger.
5. The override. If the day runs past the duty cap, the trip gets split, a second crew gets called, or a leg moves to the next morning, and the pilot in command keeps the final no.

Good answer: “We track credentials, currency, training records and availability per crew member and verify them before every trip goes on the schedule. Recurrent is simulator-based at a named provider on a tracked interval. Our duty policy is 14 hours on duty and 10 hours rest before report, and the PIC can decline a leg without clearing it with the owner first.”

Bad answer: “Our pilots are all very experienced and we work the schedule out as we go,” with no tracked records, no numbers and nobody named who’s allowed to say no.

Two more things to ask for: written PIC and SIC minimums in your make and model with a named backup pilot pool, and crew tenure. High churn shows up later as cancellations.

If your pilot is spending nights doing this verification work by hand, that is the part of the job a support provider should be carrying.

What should I ask about compliance, records, and maintenance coordination?

Ask three questions: who holds and updates the records, what maintenance tracking system is used and whose name is on the login, and what happens in the first hour of an AOG.

A normal week should sound like this:

• Day of the trip. The coordinator follows the flight, handles changes on the fly and works the trip through completion.
• Within a day of close-out. The provider updates the flight log entry, the crew currency file and the trip expense record, and issues the post trip report for operator and passengers. Not at month end.
• Weekly. The maintenance forecast gets reviewed with a 30, 60 and 90 day look ahead plus current AD and service bulletin status per airframe and engine, so inspections get scheduled around trips instead of against them.
• The tracking login. The subscription should sit in your name with your own login, and the provider works inside it. If it sits in the provider’s name, you lose the history the day you leave.
• First hour of an AOG. A 24/7 number reaches a person. The mechanic or MRO gets called, crew and passengers get rebooked while that call is still running, and you get a status message with a next update time. Routine work up to the written approval threshold proceeds. Anything above it, anything that moves a departure by more than a few hours, and anything touching airworthiness gets escalated to the owner or chief pilot by phone.

What can legally be deferred and what grounds the aircraft is covered in “Part 91 Maintenance Requirements: What You Can Defer.”

On dry leases and operational control, structure beats intent. WingLeader keeps the lease paperwork, the records and the procedures, and acts as the point of contact between lessor and lessee so who holds operational control is documented for every flight. It doesn’t draft the lease and doesn’t give legal advice, which is the correct division of labor. Enforcement of illegal charter is an active FAA priority, particularly in Florida, so that documentation either exists per flight or it doesn’t.

Red flags: walk away

• No named maintenance tracking system, or records “kept by our mechanic.”
• Refusal to share audit findings or the corrective actions that closed them.
• Crew legality checked after the trip is booked.
• An AOG line that goes to voicemail after hours.
• A multi-year term with no exit right.

What should I ask about insurance, reporting, and contract terms?

Ask who’s named on the policy, who handles renewals and claims, and what the agreement lets you audit.

On insurance, you want your ownership entity as named insured, the provider and any lessee as additional insured with waiver of subrogation, the lender as loss payee with a breach of warranty endorsement, and passenger liability stated clearly as a per-seat sublimit or a combined single limit. Confirm who issues certificates of insurance and how fast, because a lender request on a Friday is a real event.

On reporting, ask for the monthly package itself rather than a description of it. A good one arrives on a fixed cadence and looks like this:

• A monthly statement per aircraft, with trip costs allocated by flight, passenger use listed by leg, and each category split out: fuel, crew travel, maintenance, hangar, insurance, trip support.
• Invoices generated when needed, itemized, with the vendor receipts attached rather than summarized.
• Post trip reports for the operator and the passengers, issued after each trip instead of batched at month end.
• A compliance page: crew currency status, inspection due items, AD status, and dry lease documentation on file.
• A stated cadence and a named sender. Post trip report within a day or two, monthly package by a fixed day of the following month, and one named person who answers questions about a line item.

WingLeader tracks trip costs, passenger use and allocation by flight, and generates invoices and post trip reports for operator and passengers. A provider that can’t hand you a sample package with the client name removed doesn’t produce them.

On the contract, insist on audit rights covering records, cost allocations and safety documentation; ownership of records with a delivery obligation on termination; a termination right on 30 or 60 days notice; written scope with named exclusions; and a billing cycle and dispute process you can live with. The FAA’s fractional rules require a program manager to brief the owner on operational control responsibilities when an initial, renewal or extension contract is signed. Outside Subpart K nobody makes a provider do that, so write the equivalent into your agreement.

A fair quote keeps the fee and the expenses apart: one recurring fee stated in plain numbers, operating expenses passed through at cost and itemized by category, vendor discounts flowing to you, numeric triggers for any surcharge, and onboarding or records digitization fees disclosed up front. WingLeader’s model is a monthly retainer per aircraft based on flight hours, and its cost calculator returns an estimated annual variable operating cost with a line-item breakdown of fuel, engine program, parts program and maintenance. Ranges, sample budgets and the comparison against doing it all yourself belong in “Part 91 Guide: Costs, Options and When to Hire.”

Part 91 aircraft management checklist

Print this and use the same sheet for every provider on your list. One rule sits above it: governance and auditability decide the outcome, because the documents either exist or they don’t.

• Focus: aircraft of my type under management, named daily contact, honest statement of who they’re not built for.
• Operational control: stays with me, documented per flight, no assumption of charter.
• Safety: current audit or registration with date, auditor name, findings and closure record, written SMS.
• Crew: credentials and currency verified before scheduling, aircraft-specific recurrent on a tracked interval, written PIC and SIC minimums, backup pilot pool, duty and rest numbers in the contract, a clear rule for the extra leg.
• Maintenance: named tracking platform with my login, 30/60/90 day forecast, AD and service bulletin status, written approval threshold, documented AOG escalation with a 24/7 human.
• Compliance: dry lease paperwork and records held and produced on request, provider doesn’t blur the line into legal advice.
• Insurance: named insured, additional insured with waiver, loss payee with breach of warranty, passenger limits stated, certificate turnaround confirmed.
• Reporting: sample monthly package and sample invoice reviewed before signing, cadence and sender in writing.
• Contract: audit rights, records ownership, 30 to 60 day exit, scope and exclusions named in writing.

Compare providers on governance, not promises. The one that hands you documents fastest is usually running the tightest operation.

Ready to get the office handled while you keep control of the aircraft and the crew? See how WingLeader supports Part 91 operations running one to five aircraft.

Frequently Asked Questions

Can a poorly structured aircraft management arrangement cause regulatory issues under FAA Part 91?

Yes. The most common failure is a management or lease arrangement where the paperwork doesn’t match who actually directs the flight, which can put the operation in charter territory without anyone intending it. The fix is documentary: a properly structured dry lease, a per-flight record of who held operational control, and a provider that keeps that file current rather than rebuilding it after an inquiry.

Which maintenance and AOG questions reveal whether a provider can protect my schedule?

Three of them. What tracking system holds my records and whose name is on the login, how often the maintenance forecast is reviewed, and who I reach in the first hour of an AOG. A provider that protects your schedule reviews the 30, 60 and 90 day forecast weekly and books inspections around trips, as the section on compliance, records and maintenance coordination lays out. If the AOG answer is a phone number with no named escalation path and no written approval threshold, you’ll find that out at the FBO.

What are the red flags in an aircraft management proposal’s insurance section for a privately operated business jet?

Watch for a proposal that names limits without stating whether passenger liability is a per-seat sublimit or a combined single limit, one that lists the manager as named insured on your hull, and one that’s silent on waiver of subrogation. Also ask who negotiates a claim. If the provider handles the claim and the broker relationship with no obligation to report to you, you lose visibility at the worst possible moment.

What software do Part 91 flight departments actually use for scheduling and maintenance tracking?

Small departments commonly run a scheduling platform such as Airplane Manager or FOS alongside a maintenance tracking system such as CAMP, Traxxall or Veryon. Ask which systems your provider uses, whether the subscriptions are in your name or theirs, and whether you keep the data if the relationship ends. Records ownership matters more than the brand name.

What should a Part 91 aircraft management quote include beyond the monthly management fee?

The fee and the pass-through expenses belong in separate blocks, with operating costs itemized by category: fuel, crew travel, maintenance, hangar, insurance and trip support. Ask whether vendor discounts flow to you, whether any surcharge carries a numeric trigger, and whether onboarding or records digitization is billed once at the start. Anything the written scope doesn’t name is an exclusion, so read the exclusion list next to a real sample invoice. The section on insurance, reporting and contract terms lists the clauses that keep that structure enforceable.

If I plan to move the aircraft into charter later, how should I set up Part 91 management now?

Keep the records audit-ready from day one, pick a maintenance program that a certificate holder can accept rather than one you’ll have to rebuild, and keep interior and configuration documentation complete. Conformity work is mostly a records exercise, and operators who kept clean files get through it in weeks instead of months. Decide on entity structure with your own attorney and tax advisor; a support provider maintains the paperwork but shouldn’t be advising you on the structure itself.

The mistakes below produce enforcement letters, denied insurance claims, and trips that cancel at the FBO. Each one has a tell. Each one has a fix that takes less time than the cleanup.

Why Part 91 Contract Pilot Mistakes Happen

A Part 91 contract pilot is a certificated pilot who flies an owner’s or lessee’s aircraft for pay while that owner or lessee keeps operational control and no air carrier certificate is involved. Every mistake below follows one pattern: the facts of the operation stop matching that structure, one trip at a time, and nobody stops to check.

The drift is predictable. Owners want flexibility, pilots want flight time and a day rate, and everybody assumes the paperwork will get cleaned up later. It rarely does. Six months in, the manager is picking the crew, the owner’s business partner is being invoiced per leg, and nobody can point to a signed agreement that says who decides whether a trip goes.

Treating the Job Like Unlimited Freelance Flying

Yes, a pilot flying Part 91 can be paid for flying, provided the pilot holds at least a commercial certificate and is being compensated for pilot services rather than for providing transportation. The line is what the money buys. Pay for flying an owner’s airplane is pilot services. Pay that effectively buys a seat, a route, or a trip from whoever assembled the airplane and the crew is transportation for compensation, and that requires an operating certificate. Becoming a Part 91 contract pilot means holding at least a commercial certificate with instrument privileges, the type rating and aircraft-specific training for the airplane, a current medical, satisfied recent experience and the policy’s open pilot minimums, with the credentials, currency and training records checked before a trip goes on the schedule.

This mistake looks ordinary. A pilot takes open-ended work from a broker or a friend with an airplane. The trips repeat. Somebody starts quoting a price per trip that includes the airplane. Passengers who have no relationship to the owner start showing up on the manifest.

Why it happens: the arrangement grows one trip at a time, and no single trip feels like charter.

What it costs: civil penalties, an insurance carrier that declines the claim because the flight was a commercial operation the policy never covered, and a pilot certificate in jeopardy.

The right move: avoid public-facing offers of transportation. Advertise pilot services and your qualifications, never the airplane, the seat or the trip. Define the passenger universe before the first trip, and keep per-seat pricing and broker trip quotes out of the arrangement. Sell your time, never the lift.

Letting the Paperwork Say One Thing and the Operation Do Another

“Part 91 pilot” means a pilot operating under the FAA’s baseline general operating rules, where the operator is the owner or lessee rather than a certificate holder. The pilot in command carries the airworthiness and operational responsibility for the flight. Everything above that (whether the trip gets scheduled, who approves the maintenance, who the passengers are) belongs to whoever holds operational control. The mistake is never writing that down.

Vague arrangements create two problems at once. The FAA looks at the facts and decides for you who the operator was. Your insurer does the same thing, and with less patience.

Picture the dispute. A trip cancels for weather, the owner’s assistant says the pilot canceled it and wants the day back, and the pilot says the office booked the FBO and the passengers so the trip was never his to hold. A discrepancy from the last leg is still sitting there because nobody agreed who approves the maintenance. The passengers have been sending their schedule changes straight to the pilot’s phone. Four facts settle who the operator was: who cancels, who books, who approves maintenance, and who receives passenger requests. With no document, whoever answers those in practice is the operator.

What a mismatch looks like in practice:

• The agreement says the owner retains operational control, but the pilot routinely accepts trip requests directly from passengers.
• The pilot signs the fuel release, books the FBO, and decides the routing, while the owner’s assistant handles cancellations.
• Nobody can produce a signed pilot services agreement at all, only text messages.

The fix is one document type: a written pilot services agreement, or a crewmember agency agreement where the pilot acts as the operator’s agent for the flight. It names who accepts trip requests, who cancels, who approves maintenance, and who the passengers call. If the document and the habit disagree, change the habit or change the document. Do not leave both running.

Using a Dry Lease Pattern That Still Looks Like Charter

The most common legal trap in Part 91 contract flying is a dry lease that functions like a wet lease. On paper the lessee has the airplane and hires the crew. In fact the lessor is doing the operating. The FAA calls that a sham lease, and it is treated as an unauthorized air carrier operation. The FAA treats the aircraft owner as the operator unless a properly structured dry lease is in place, and enforcement of illegal charters is an active FAA priority, particularly in Florida.

The red flags are specific and easy to self-check:

The right move is alignment: the lessee chooses and pays the crew, directs maintenance, holds the airworthiness decision, receives passenger requests, and is billed like a lessee rather than a charter customer.

As one factual example of how that control gets documented: on a dry lease, WingLeader keeps the lease paperwork, the records and the procedures, and acts as the point of contact between lessor and lessee so who holds operational control is documented for every flight. WingLeader does not draft the lease and does not give legal advice.

If you want the office side handled without giving up control of your airplane and crew, see how the back-office support works.

Skipping Qualification, Currency, and Aircraft-Specific Training Checks

A contract pilot for Part 91 operations needs the certificate and rating for the aircraft, a current medical, satisfied recent-experience requirements, aircraft-specific initial or recurrent training, and whatever the insurance policy’s open pilot warranty demands. General experience is not qualification. A 12,000 hour pilot with three type ratings can still be out of currency for the approach the trip requires.

This mistake comes from time pressure. A trip pops up Thursday for Saturday, somebody recommends a pilot, and the records never get checked. Then the flight ends up with an out-of-currency crew member, the insurer finds the gap during a claim, and coverage evaporates. Or the checkride-sharp part goes fine and the trip simply cancels at the ramp when the discrepancy surfaces.

Mission-specific qualifications get their own line. International authorizations, high-altitude or oceanic experience, and terrain or short-field work are where a generally qualified pilot comes up short. Run the check at assignment time, and run it again for every new aircraft and every new mission profile.

Verify before assignment, not before departure:

• Certificate, ratings, and current medical
• Recent experience for the intended operation, including instrument currency
• Aircraft-specific training date and provider
• Insurance open pilot warranty minimums, by make and model
• Mission-specific items: international authorizations, high-altitude or oceanic experience, terrain or short-field profiles

WingLeader tracks pilot credentials, currency, training records, and availability, and checks them before any trip goes on the schedule. A trip with a crew member out of currency does not get scheduled until it is fixed. That is the whole discipline in one sentence, and it is cheap compared to a canceled trip with passengers already at the FBO.

Common mistakes box

• Hiring on reputation instead of records
• Verifying the pilot once and never again
• Treating a type rating as proof of recency
• Ignoring the owner’s policy language on pilot minimums
• Letting the pilot self-certify with no document on file

Assuming the Flight Is Still Part 91 When the Facts Say Otherwise

This is the one that does the most damage: the arrangement starts as a legitimate pilot-for-hire setup, and over time the operational facts start to describe a Part 135 operation. Nothing gets signed to make that happen. It happens through habit, and nobody runs the test that would catch it.

Classify the operation mission by mission against the real control, payment and passenger facts, not against the labels on the lease, the invoice or the trip sheet. As the eCFR notes, an owner is in operational control of a program flight when the owner holds the stated rights and limitations, has directed that the aircraft carry passengers or property that owner designated, and the aircraft is carrying them. That owner is then ultimately responsible for safe operations and for compliance with applicable requirements, including airworthiness. The full boundary between the two parts is covered in “Part 91 vs Part 135: Cost, Risk, Control” and in “What Is Part 91 Operations?

The four-question check, before every new mission profile:

1. Control. Who is the operator in fact on this mission, the owner or lessee, or somebody else?
2. Passengers. Who are they to the owner, and who did they call to arrange the flight?
3. Money. What exactly is being paid for, to whom, and does the invoice describe a lease payment or a trip price?
4. Appearance. If an FAA inspector read your last 20 trip records end to end, would the pattern look private or would it look like a small charter operation?

The gray areas are where pilots get caught, so here they are stated plainly:

• Social media advertising. This is fine: a post that advertises your pilot services, your ratings and your time in type. This will get you violated: the same post adding “your airplane or ours” or a price per trip, because that offers transportation to whoever reads it.
• Broker relationships. This is fine: a broker who refers owners to you and then steps out of the deal. This will get you violated: a broker who sources the airplane, quotes the client a trip price and assigns you to the flight, which makes one operation selling lift with your certificate in the middle of it.
• Multiple-client flying. This is fine: flying for six owners in a month, each one hiring you directly for their own airplane. This will get you violated: six trips where the passengers call you first and you arrange the airplane for them.

If any answer points away from the owner or lessee, stop scheduling and fix the structure.

How to Get the Arrangement Right Before the First Flight

Five things in writing before the first flight, and most of the failures above never start.

1. Operational control. A plain statement that the owner or lessee is the operator and the pilot acts as the operator’s agent, with trip acceptance and cancellation authority named.
2. Qualification. What the pilot is cleared to fly: certificates, medical, recency, aircraft-specific training and open pilot warranty compliance, dated and on file.
3. Insurance and indemnity. Named or additional insured status where the carrier allows it, waiver of subrogation where feasible, and indemnity running both directions.
4. Cancellation and reposition. What happens when a trip moves, repositions or cancels, plus the internal duty and rest standard that applies, written as a contract term since Part 91 gives you no numeric framework.
5. Records. Where the signed agreement, the qualification file and the lease documents live, and who produces the whole set during an inspection.

Day rates, tax structure and the fuller setup walkthrough sit outside this article; the cost side and the case for hiring outside support are covered in “Part 91 Guide: Costs, Options and When to Hire.”

WingLeader was founded by Abram Finkelstein, who flies as a volunteer pilot for Veterans Airlift Command, Challenge Air and Angel Flight SE and has flown the trips and filed the paperwork the service handles for clients. If your operation runs 1 to 5 aircraft, talk with WingLeader about carrying the back office while you keep the airplane and the crew.

Frequently Asked Questions

How to become a Part 91 contract pilot?

Hold at least a commercial certificate with instrument privileges, add the type rating for the aircraft you intend to fly, complete manufacturer or approved aircraft-specific training, and meet the insurance open pilot warranty for that make and model, which usually specifies total time, multi-engine time, and time in type. Then build a paper file: certificates, medical, recency, training dates. Owners who check records hire the pilot who can produce them in an hour.

Do I need my employer’s permission before flying contract trips on my days off?

Read the outside employment clause in your airline or flight department policy before you accept the trip. Many require written approval for any flying for compensation, and some bar it outright on reserve days or during a training footprint. Get the approval in writing and keep it with your qualification file, and remember that a contract leg on a day off still eats the rest you owe your next scheduled trip.

Can a contract pilot be used for Part 91 flights without a Part 135 certificate?

Yes. Paying a pilot for pilot services does not turn a private flight into a commercial operation. The certificate question turns on whether anyone is providing transportation for compensation, which depends on who controls the aircraft, who the passengers are, and what the payment actually buys.

Does Part 91 have duty time limits for contract pilots?

Part 91 imposes no numeric duty and rest framework for most operations, which is exactly why operators write their own. A common internal standard is a 14 hour duty day with a flight time cap around 8 to 10 hours and 10 hours of rest before duty. Put the numbers in the agreement so a late trip request does not become a negotiation at 9 p.m.

Who has operational control in a Part 91 contract pilot setup?

The owner or the lessee, not the pilot and not a management company. Operational control means the authority to initiate, conduct, and terminate a flight. If a manager is choosing crew, directing maintenance vendors, and taking passenger bookings, the facts say the manager is the operator regardless of what the contract claims.

What records should an owner keep for a Part 91 contract pilot?

The signed pilot services agreement, the pilot’s certificates and medical, proof of recent experience and aircraft-specific training, insurance documentation showing the pilot meets policy requirements, and trip records tying each flight to an authorized mission. Keep the lease documents with them when a dry lease is involved. The test is whether you can produce the set during an inspection without hunting through email.

What liabilities should the agreement address in Part 91 flying?

Name who indemnifies whom and for what, who carries the deductible on a hull or liability claim, and whether the owner waives subrogation against the pilot. Add governing law and venue so a dispute does not turn into an argument about where it gets heard. For the pilot, payment timing with a stated remedy for nonpayment belongs in the same section, since a 30 day term with no late clause is the most common way contract pilots get stiffed.

What insurance issues affect Part 91 contract pilot operations?

The open pilot warranty is the first trap, because a pilot who misses a stated minimum by 50 hours in type can void coverage for that flight. The second is status: a contract pilot relying on the owner’s policy without being named has no coverage for personal liability, which is why some pilots carry non-owned aircraft coverage. Ask the broker in writing whether the pilot is covered and get the response on file before the first trip.

The Short Answer on Part 91 Maintenance Requirements

Under 14 CFR 91.403, the owner or operator is primarily responsible for keeping the aircraft in an airworthy condition, including compliance with applicable airworthiness directives. That means required inspections done on time, discrepancies repaired as prescribed in Part 43, an approval for return to service after maintenance, and the maintenance records to prove all of it. Not every item in the manufacturer’s maintenance manual is mandatory for a Part 91 operator, but the inspection, approval and record rules are.

Airworthy has two halves. The aircraft conforms to its type design. It’s in condition for safe operation. Lose either one and the flight is not legal, regardless of how the airplane feels on the preflight.

When Part 91 Maintenance Requirements Apply, and When They Do Not

Yes, an annual inspection is required for most U.S. registered civil aircraft operated under Part 91. As AOPA notes, most general aviation aircraft need an annual inspection completed and properly endorsed within the preceding 12 calendar months. The clock runs to the last day of the twelfth month. An annual signed on March 14 carries the aircraft through March 31 of the following year.

Where the obligation changes:

• Approved inspection programs. Section 91.409(c) and (d) let eligible aircraft run a progressive inspection program, a current manufacturer’s inspection program, or an FAA approved alternative program instead of the standard annual and 100-hour structure. Plenty of light jets and turboprops operate this way. Once you select the program, it becomes the rule.
• Large and turbine multiengine aircraft. These are generally excluded from the plain annual requirement and must be inspected under one of the 91.409(f) program options.
• Experimental, provisional and special flight permit operations. These fall outside the standard annual rule and follow their own operating limitations.
• According to the FAA, Fractional ownership under Subpart K. These programs carry obligations a private operator does not have, including required maintenance and preventive maintenance training programs under 91.1433. Subpart K is covered in more depth in “Part 91 Guide: Costs, Options and When to Hire.”

An overdue inspection does not ground the airplane forever. It grounds it until the inspection is done or until the FAA issues a special flight permit to reposition it to a facility that can do the work.

What Part 91 Requires Before the Aircraft Can Fly Again

Four conditions have to be true before the wheels come up after maintenance. Inspection status current. Discrepancies repaired, deferred lawfully, or otherwise handled. Approval for return to service by a person authorized under 43.7. The required maintenance record entry must be made.

Part 43 tells you who may perform the work and how the entry must read. Part 91 tells you whether you may fly. The two only look separate until a ramp check, when an inspector asks for both.

Annual and 100-Hour Inspections

The annual is driven by calendar time. The 100-hour is driven by time in service and only applies in specific commercial-adjacent situations. Under FAR 91.409, aircraft carrying any person other than a crew member for hire, or provided for flight instruction for hire, require a 100-hour inspection. A privately flown Part 91 airplane carrying the owner and guests does not need one.

Sign-off authority differs. An annual inspection requires an inspection authorization holder or a properly rated repair station. A 100-hour may be approved by an appropriately rated A&P mechanic. An annual satisfies a 100-hour requirement, but a 100-hour never satisfies an annual. When the aircraft goes over the 100-hour limit, the regulation allows up to 10 additional hours to reach a place where the inspection can be done. Those excess hours count against the next interval.

Inoperative Equipment and Deferrals Under Section 91.213

A Part 91 aircraft can fly with some inoperative instruments and equipment. Section 91.213(d) is the path for operators without an approved minimum equipment list, and it only opens when the item is not required by the type certificate data sheet, not required by the aircraft’s VFR-day equipment list, not required by an airworthiness directive, and not required by any other operating rule for the flight being flown. The item must then be deactivated or removed and placarded inoperative, with a maintenance record entry when a mechanic does the removal.

Warning: Legal to Fly vs. Safe to Fly Section 91.213 sets the legal floor. It says nothing about whether launching at night, into weather, over water, with that item inoperative is a sound operational decision. A legal dispatch with a failed autopilot, a dead second nav radio and a marginal forecast is still a bad trip. Pilot in command authority under 91.3 does not disappear because the paperwork says go.

Operators flying under an approved MEL are in a different system. The MEL becomes a supplemental type document, repair intervals apply by category, and the deferral must be recorded and placarded exactly as the MEL procedure requires. Mixing the two, deferring an MEL item using the 91.213(d) logic, is one of the faster ways to turn a maintenance issue into a regulatory one.

Records, Entries, and Airworthiness Directives

Two record categories matter. Short-term records covering maintenance, preventive maintenance and alterations must be kept until the work is repeated, superseded, or for one year. Long-term records are generally kept with the aircraft and transferred on sale, including inspection and maintenance history.

AD compliance is verified at each required inspection under 43.15(a), which means a missed AD usually surfaces at the annual, or at a prebuy, where it becomes a price negotiation. Records must be available for the FAA or an authorized NTSB representative on request. Pitot-static systems, altimeters and transponders have separate recurring test intervals for IFR operations and transponder use.

Handing that tracking to someone who does it every day is the whole point of back-office support. If credential tracking, records and trip documentation are currently living in a pilot’s inbox, see how that work gets carried for a one to five aircraft operation.

What You Can Legally Defer Under Part 91

Here is where operators get into trouble. Manufacturer TBOs, recommended overhaul intervals and service bulletins without an accompanying AD are generally not legally mandatory for a Part 91 operator. FAA guidance states Part 91 operators are not required to comply with a manufacturer’s entire maintenance program. An engine 200 hours past published TBO can be legal to operate under Part 91 if it remains in condition for safe operation, all ADs are complied with, and no approved program or operating rule requires the overhaul.

Legal is not the same as consequence-free. Insurers, lessors and buyers write their own rules. An over-TBO engine or an unaccomplished mandatory service bulletin routinely shows up as a coverage condition, a lease default, or a five-figure deduction at closing.

Who Handles Part 91 Maintenance Compliance

The owner or operator carries the regulatory responsibility under 91.403. Authorized maintenance personnel do the work and sign the approval for return to service. Those two roles never merge. A signed logbook entry does not transfer the operator’s duty to make sure the inspection was due, the AD was checked and the entry is actually in the book.

• Owner or operator: ensures required inspections happen, discrepancies are addressed, records are retained and transferred, and no flight begins without a valid return to service.
• A&P mechanic: performs maintenance and preventive maintenance, signs 100-hour inspections when appropriately rated, makes 43.9 entries.
• IA or rated repair station: approves annual inspections and major repairs and alterations.
• Pilot in command: determines airworthiness before every flight under 91.7 and can refuse a legal but unsound dispatch.
• Back-office or management support: tracks intervals, AD status, credentials and documentation so the gap never opens in the first place.

At WingLeader, the check runs before the trip goes on the schedule. The assigned crew’s credentials, currency and training records are verified. A trip with a crew member out of currency does not get scheduled until it is fixed. Maintenance status deserves the same discipline. Responsibility stays with the operator either way.

What Happens If You Skip a Required Part 91 Step

The aircraft is not airworthy, the flight is unlawful, and the exposure lands on the owner or operator first. Operating after maintenance without an approval for return to service and the required record entry is a violation even when the repair itself was done correctly and the airplane flies fine. Insurance carriers read the same regulations. A claim following an unairworthy operation invites a coverage fight nobody wants to have.

The consequences stack:

Enforcement action or a compliance program case from the local FSDO. Certificate action against the pilot in command who accepted the aircraft. A grounded airplane and a special flight permit application to move it. Records gaps that a prebuy inspection turns into a lower price or a dead deal, because missing AD compliance history is the hardest thing to reconstruct years later. Enforcement of illegal charter is an active FAA priority, particularly in Florida, and a file opened for one reason tends to look at everything else in the binder.

Before the next trip, verify three things. Inspection status current. All ADs complied with and documented. The last maintenance signed off with a return to service entry.

When Part 91 Maintenance Is Better Left to a Pro

Call an IA or a repair station before dispatch any time the question involves a major repair or alteration, an AD with a compliance method you are interpreting, an expired inspection, an MEL deferral near its repair interval, or equipment that might be required by the type certificate. Call a compliance review when the aircraft changes use profile, enters a dry lease, or heads toward a sale. Cost detail for all of this sits in “Part 91 Guide: Costs, Options and When to Hire.”

WingLeader was founded by Abram Finkelstein, a pilot and attorney who flies as a volunteer pilot for Veterans Airlift Command, Challenge Air and Angel Flight SE, and who has flown the trips and filed the paperwork the service handles for clients. The operator keeps the aircraft and the crew. Let the office be carried by someone who tracks the paperwork full time.

Frequently Asked Questions

What does 14 CFR 91.407 require after major maintenance altering flight characteristics?

When maintenance, a rebuild or an alteration could appreciably change flight characteristics or substantially affect operation in flight, 91.407(b) requires an appropriately rated pilot holding at least a private pilot certificate to fly the aircraft, make an operational check, and log the flight in the maintenance records before carrying anyone other than required crew. No passengers until that check is complete and recorded.

What are the FAA maintenance standards for a Part 91 aircraft?

They are the combination of 91.403 airworthiness responsibility, 91.405 discrepancy and inspection duties, 91.407 return to service, 91.409 inspection intervals, 91.417 recordkeeping, and Part 43 performance and entry standards. Part 39 adds mandatory airworthiness directive compliance. Manufacturer guidance is layered on top and only becomes legally binding when an AD, an approved program or another rule adopts it.

Are manufacturer mandatory service bulletins required under Part 91?

Generally no. A service bulletin becomes legally mandatory for a Part 91 operator when the FAA issues an airworthiness directive adopting it, or when an approved inspection program or lease term requires it. Insurers, lessors and prebuy buyers apply their own standards, so document every decision to skip one.

Who can sign off an annual inspection, and what if an unauthorized mechanic does it?

Annual inspections require an inspection authorization holder or a properly rated repair station. An A&P alone cannot approve one. If an unauthorized person signs the inspection, the aircraft never had a valid annual, every flight since is an operation with an overdue inspection, and the inspection has to be redone.

How does the 10-hour ferry allowance on a 100-hour inspection actually work?

The aircraft may exceed the 100-hour limit by up to 10 hours only while en route to a place where the inspection can be done. Those excess hours are subtracted from the next 100-hour interval. Flying past 100 hours for convenience or to finish a revenue trip is not what the allowance covers.

What counts as preventive maintenance an owner can perform?

Appendix A of Part 43 lists the items, including oil changes, tire and battery servicing, spark plug cleaning and gapping, and simple hose and fairing replacement, on aircraft not used in air carrier service. The owner must hold at least a private pilot certificate, operate the aircraft, and make a complete record entry under 43.9 with description, date, signature and certificate number.

What happens to a progressive inspection program when the aircraft is sold?

The program belongs to the operator who registered it with the FSDO, so it does not automatically transfer. The new owner either establishes an approved program of their own or reverts to the standard annual and 100-hour structure. The last complete cycle of inspection records has to come with the aircraft.

Quick take: Part 91 fits private control, Part 135 fits higher oversight and charter use

If the aircraft stays private and the owner wants maximum control over crew, schedule and airports, Part 91 is the fit. If the aircraft carries paying passengers, or the owner wants a certificate holder absorbing operational responsibility under a regulated safety structure, Part 135 is the fit. As the FAA’s Safe Air Charter Team notes, private pilots may not act as pilot in command for compensation or hire under Part 91 when carrying persons or property for compensation or hire.

Part 121, the scheduled airline rulebook, sits above both and only enters the picture past roughly 30 seats. The mechanics of the Part 91 compensation line are covered in “What Is Part 91 Operations? The Plain-English Guide.”

Part 91 vs Part 135 at a glance

Control and liability

Under Part 91 the owner or operator initiates, conducts and terminates the flight. According to the eCFR, under Part 135, the certificate holder holds operational control, and the regulations say it plainly: an owner is not in operational control of a flight when the aircraft is being operated under Part 121 or Part 135.

That means the owner owns the consequences.

The transfer is the reason some risk-averse owners accept a heavier rulebook. Insurance follows control. Commonly quoted benchmarks for a large cabin jet put Part 91 liability limits near $100 million, while the same aircraft on a certificate frequently carries $200 million or more, with the operator’s commercial policy sitting first in line after a claim. In a catastrophic event, that gap is uncompensated exposure that reaches the owner’s balance sheet.

The trap sits between the two models. The FAA treats the aircraft owner as the operator unless a properly structured dry lease is in place, and a handshake lease with a friendly company does not survive an examiner reading the file. Enforcement of illegal charters is an active FAA priority, particularly in Florida. The FAA letter is one outcome. Insurance is the other: if a claims adjuster decides a Part 91 flight looked commercial, coverage can be voided, and the owner is left holding the loss personally with no certificate holder’s commercial policy standing in front of it. Whoever signed the lease and whoever paid for the fuel are the two questions that decide who gets the letter.

Documented operational control is a paperwork job. WingLeader stores records, procedures and dry lease paperwork and acts as the conduit to the dry lessee and dry lessor (so the file shows who controlled each flight). WingLeader does not provide legal advice and does not provide the dry lease document itself. That comes from aviation counsel.

Safety oversight and crew rules

Part 135 buys consistency. Part 91 buys latitude. On this criterion the comparison comes down to fatigue and repeatability.

Under Part 135, captains sit for FAA mandated proficiency checks on a six month cycle. Crews fall under a drug and alcohol testing program with a random pool, and duty and rest are numbers instead of judgment calls. Cornell Law School reports that during any 24 consecutive hours, total flight time for a one-pilot crew may not exceed 8 hours. The pilots also have to be employed by the certificate holder that has operational control of the flight.

Those numbers land on the schedule. A single pilot flying four short legs on a busy day reaches the 8 hour ceiling and the day is over, even if the passengers want one more leg. Under Part 91 the same pilot can keep going and the call falls to the operator’s own policy. The six month check cycle pulls each captain off the line twice a year into a training slot booked months ahead, and every crew member has to sit in the random drug and alcohol testing pool before the first revenue leg. Part 91 buys back that flexibility and hands the fatigue call to whoever is tracking the week, which is often the same person flying. Operators close that gap with written duty limits, insurance driven annual training and a scheduler willing to say no.

Airport access and mission flexibility

Part 135 narrows the airport list in two specific ways.

• Landing distance margin. The aircraft has to be able to make a full stop landing within 60 percent of the effective runway length at the destination.
• Weather reporting. Destinations generally need approved weather reporting, which removes a share of the short, unattended fields that made the airplane attractive in the first place.

Part 91 flies the same airplane into those fields on actual performance numbers, contaminated runway data and the day’s weight. For a light jet or turboprop working 4,000 foot strips, that margin is the difference between a 20 minute drive and a 90 minute drive for the passengers.

Schedule changes work the same way. A Part 91 trip can flex a departure by three hours on a phone call. A Part 135 trip flexes inside duty limits, crew legality and the dispatch release. Protective, yes. Slower, also yes. Owners who bought the airplane for exclusive use, privacy and short notice departures feel that difference first.

Maintenance, paperwork, and operating cost

Moves almost always run one direction, from Part 91 onto a Part 135 certificate, and the airframe does not change. The file cabinet changes, and that is where the annual delta lives. For the same light or midsize jet, budget these added lines under Part 135:

• Certificate entry work. A conformity inspection plus an operations specifications amendment before the first revenue leg. Operations specifications are the FAA approved authorizations that state what the certificate holder may fly, where, and under what conditions. The aircraft has to be listed on them.
• Approved inspection program. More frequent inspections and added tasks versus the manufacturer’s recommended program under Part 91, with service bulletin and airworthiness directive compliance tracked to an auditable standard.
• An approved minimum equipment list. Deferrals become documented, time limited and inspector visible.
• Training spend on a calendar. Initial and recurrent ground and flight training, the six month captain check cycle, and the administrative cost of the testing pool.
• Recurring records. Load manifests per leg, passenger identification, flight and duty time records, and training folders per crew member, with retention rules that outlast the crew’s employment.
• Insurance. Lighter oversight and lower utilization keep Part 91 premiums down. A certificate holder carries the operational exposure and roughly double the liability limit, so hull premiums for a large cabin jet commonly run 40 to 50 percent higher under Part 135.
• Tax on revenue. The 7.5 percent federal excise tax on domestic air transportation plus the per-passenger segment fee, priced into the charter rate rather than absorbed.

Charter revenue on an under-utilized aircraft can offset a meaningful slice of fixed cost. But the offset arrives as hours, and hours bring cycles, engine program draw and earlier heavy inspections. Full cost tables for a Part 91 operation sit in the silo hub, “part 91.”

The admin hours are the line owners forget. Somebody has to keep the file current every month. WingLeader carries that office for operators running 1 to 5 aircraft: dispatch, flight following, scheduling, crew coordination, compliance documentation including dry lease records, and expense tracking, with pilot credentials, currency and training records checked before any trip goes on the schedule, so a trip with a crew member out of currency does not get scheduled until it is fixed. The free cost calculator at flywingleader.com/cost-calculator/ returns an estimated annual variable operating cost from jet category, expected annual flight hours and fuel price, with fuel, engine program, parts program and maintenance broken out line by line on request. Abram Finkelstein has flown the trips and filed the paperwork the service handles for clients. If the office work is stacking up between trips, see how back-office support sized for 1 to 5 aircraft works.

Choose Part 91 if, choose Part 135 if

Part 91 applies to the owner, corporate flight department or individual flying privately, with nobody outside paying for transportation. Here is the decision rule.

Choose Part 91 if:

• The aircraft flies the owner, employees and guests, and nobody outside the company pays for transportation.
• Mission value comes from short runways, unreported fields and same-day schedule changes.
• The owner wants direct say over crew selection, training vendor and maintenance timing.
• Exclusive use and privacy come first: passengers are not routinely carded or listed on a manifest for every leg.
• Utilization is already high enough that charter revenue would rarely fill an empty day.

Choose Part 135 if:

• Third parties will pay for seats or flight time.
• You would rather have operational control and primary liability sit with a certificate holder than with you.
• The board, the CFO or the insurer wants an audited safety structure.
• The aircraft sits idle enough that revenue offsets a real share of fixed cost.
• Higher liability limits with a commercial policy in the primary position are worth the higher hull premium.

Key takeaway: Compensation decides whether you have a choice. Liability tolerance and utilization decide which side of the choice you take. Cost is the output, not the input.

Can a flight be Part 91 one leg and Part 135 the next?

Yes, and it happens most weeks. The operating part is set leg by leg by two questions: who holds operational control of that leg, and who is paying for it. Walk a normal charter day and the trigger for each leg is easy to name.

• Deadhead positioning. The certificate holder flies the empty airplane to the pickup airport. Trigger: no passenger and no payment for transportation, so the leg runs under Part 91.
• Empty leg sold to a customer. Trigger: a third party pays to ride that repositioning flight, so it becomes a Part 135 revenue leg with the certificate holder in operational control.
• Owner flight home. Same airplane, same crew, owner and family aboard. Trigger: the owner or the owner’s entity holds control and nobody buys transportation, so the leg is Part 91 (as long as the lease and the records say so).
• Reimbursed guest flight. The owner flies out Part 91 and a company guest rides home while the guest’s employer sends a check. Trigger: a payment for the transportation arrives from outside, and that payment, not the itinerary, is what an examiner reads.

The dollar mechanics decide that last one. Cost sharing under Part 91 is narrow: the pilot may pay no less than a pro rata share of fuel, oil, airport expenses and rental fees, so a $1,200 fuel and fees bill split among a pilot and three passengers leaves the pilot carrying at least $300. A $6,000 check for a trip that burned $1,200 in fuel is charter without a certificate. Private pilots may not act as pilot in command for compensation or hire under Part 91 when carrying persons or property for compensation or hire.

If your operation runs 1 to 5 aircraft and the office work is piling up between trips, see what back-office support for Part 91 operations covers.

Frequently Asked Questions

What is the difference between part 91 and part 121?

Part 91 is the baseline rulebook for private, non-commercial flying. Part 121 is the scheduled airline rulebook, with dispatch systems, approved training centers and the tightest maintenance and duty structure of the three. The practical boundary runs on aircraft size: on-demand Part 135 work tops out around 30 seats or 7,500 pounds of payload capacity, and past that you are into Part 121. The three parts side by side are covered in “Part 91 vs 121 vs 135.”

Is NetJets part 135 or part 91?

Both, depending on the leg. Owner flights run under Part 91 Subpart K and the charter side runs under a Part 135 certificate, with the same airplanes and crews switching operating part from one leg to the next.

Can a pilot over 65 fly part 135?

Yes. The age 65 retirement rule applies to Part 121 airline pilots, not Part 135 on-demand operations. A Part 135 pilot over 65 needs a current medical certificate and the required checks. The practical limit becomes insurance underwriting rather than the regulation.

Can part 135 fly single pilot?

Yes, with single-pilot authorization written into the operator’s operations specifications and, for IFR, an approved autopilot in place of a second in command. Not every aircraft or operation qualifies, and the flight time ceiling for a one-pilot crew is tighter than for a two-pilot crew.

Can I keep some aircraft Part 91 and place one on a Part 135 certificate?

Yes. Mixed fleets are common in operations running 1 to 5 aircraft. Each aircraft needs its own conformity work and operations specifications entry to go on the certificate, and the scheduling side has to keep the two rule sets from bleeding into each other. Crew currency, maintenance tracking and records get harder, which is where most small operations feel the strain.

Who does part 91 apply to?

Part 91 applies to civil flights in US airspace that are not carriage for compensation or hire under a higher part: owner-flown trips, corporate flight departments, fractional owner legs under Subpart K, and the positioning legs of charter operators. It is also the baseline set of flight rules, so a Part 135 flight follows Part 91 too, with the extra Part 135 requirements stacked on top. “What Is Part 91 Operations? The Plain-English Guide” walks through who it covers in detail.

According to Cornell Law School, part 91 operations are flights flown under 14 CFR Part 91, the FAA’s General Operating and Flight Rules. It’s the baseline rule set for non-commercial civil flying in U.S. airspace: owner-flown trips, corporate flights and personal travel where no one buys the transportation and the aircraft isn’t held out to the public for hire.

If you own an aircraft, fly one for a company, or run a flight department with one to five airplanes, Part 91 is the line you need to know.

How Part 91 Operations Work in Practice

Part 91 works by putting responsibility on the operator and the pilot in command instead of on a certificate holder with FAA-approved manuals. There’s no operating certificate to apply for and no operations specifications to hold. You buy or lease the aircraft, you fly it inside the rules, and you keep the records that prove you did.

Operational control is the term you’ll hear from an FAA examiner. It means the authority to initiate, conduct and terminate a flight: who decides the trip happens, who selects and pays the crew, who calls the cancellation for weather. Under Part 91 that authority sits with the aircraft owner or the operator flying it. Under Part 135 it sits with the certificate holder, who answers for crew, maintenance, dispatch decisions and compliance. Every dry lease question comes back to the same point. The FAA treats the aircraft owner as the operator unless a properly structured dry lease moves control to the lessee on paper.

The regulation is built as one applicability section followed by subparts. Section 91.1 says where the rules apply, then Subpart A carries the general rules, Subpart B the flight rules, Subpart C equipment and instrument requirements, Subpart E maintenance and inspections, and Subpart K the fractional ownership programs. Subpart F covers large and turbine-powered multiengine airplanes plus fractional ownership program aircraft, running from 91.501 through 91.536. That subpart holds time sharing, interchange and the other cost-reimbursement arrangements.

The rule sets are additive. Part 91 sets the floor: airworthiness, inspections, airspace, weather minimums, fuel reserves, equipment. A charter operator under Part 135 meets every Part 91 requirement and then adds stricter ones on top, and so does an airline under Part 121. FileFlo reports that part 119 is the certification gate that decides which stricter book applies: commuter and on-demand flying goes under Part 135, while domestic, flag and supplemental operations go under Part 121, with the larger book reached at more than 30 passenger seats or a payload capacity over 7,500 pounds.

When Part 91 Operations Matter

Part 91 matters the moment money, passengers or a lease enters the picture. Owner flights, corporate trips carrying employees and company property, personal travel, training and repositioning legs all sit inside Part 91 as long as nobody’s buying transportation. A commercial pilot can be paid to fly the owner and the owner’s guests and the trip stays Part 91, because a salary paid to a pilot isn’t passengers purchasing carriage.

Example: two identical legs, two different rule sets

A Phenom 300 flies from a Florida home base to a meeting in Texas. Four passengers, same crew, same route, same FBO.

• Trip A. The passengers are employees of the company that owns the aircraft. The company pays its own fuel, crew and maintenance, and the company’s operations manager decides the trip goes, assigns the crew and can cancel it. The owner pays, the owner controls the aircraft, and nobody bought a seat. This is Part 91.
• Trip B. Two of the four passengers work for an unrelated company, and that company wires a payment covering the leg. The owner still schedules the trip and still directs the crew, so operational control hasn’t moved anywhere. The owner is now furnishing the aircraft and the crew together to people paying for the transportation, and that combination is compensation or hire. Unless a valid Subpart F arrangement or a properly structured dry lease stands behind it, the leg is charter flown without a certificate.

Nothing visible changed. The invoice changed, and that’s the part an FAA examiner will ask about.

Enforcement of illegal charters is an active FAA priority, particularly in Florida. If the lease file and the trip records are what you would rather hand to someone else, WingLeader offers back-office support built for Part 91 operators running one to five aircraft.

Common Confusions About Part 91 Operations

Private doesn’t mean no money changes hands, and it doesn’t mean any flight among people who know each other. The test is carriage. Common carriage means holding the aircraft out to carry anyone who buys transportation, and it needs a certificate. Private carriage means carriage for compensation under a small number of long-term contracts with no public offering, and Part 119 still reaches it, so “we never advertised” isn’t a defense on its own. The table below is the charter-like flying Part 91 actually allows, with the line where each one crosses.

The red flags behind most failures are short and familiar:

• Invoicing by the seat rather than by the aircraft.
• A handshake dry lease with no written terms and no record of who held operational control.
• A third party, not the owner or the lessee, paying for the leg.
• A broker or manager listing the tail on a charter platform.

What to Do Next if You Think Part 91 Applies

Work the next decision in order, on paper.

1. Name who holds operational control for each flight. Whoever initiates, conducts and terminates the flight is the operator in the FAA’s eyes. If that’s the owner, the file should say so. If a lease moves it to a lessee, the lease, the crew arrangements and the trip records all have to agree.
2. Ask whether anyone is paying for the transportation. Trace every dollar that touches the leg: affiliates, customers, guests, brokers. If money moves and no written lease or 91.501 arrangement stands behind it, fix that before the trip goes on the schedule.

If step two turns up payments you can’t place, the rule-by-rule split is covered in “part 91 vs 135”. If control and money both sit with the owner and the paperwork is what keeps slipping, “part 91 aircraft management” covers what to look for in outside support, and “part 91 maintenance requirements” covers inspection intervals and records. Cost detail lives in the hub article, “part 91“.

On a dry lease, WingLeader keeps the lease paperwork, the records and the procedures and acts as the point of contact between lessor and lessee, so who held operational control is documented for every flight. WingLeader does not draft the lease and does not give legal advice.

If that is the work falling between trips, see how WingLeader supports operators running one to five aircraft under Part 91.

Frequently Asked Questions

What is a Letter of Authorization for Part 91 operations (LOA)?

An LOA is written FAA approval for a specific operation your aircraft or operator isn’t otherwise authorized to conduct, issued by your local Flight Standards District Office. Common Part 91 examples include RVSM airspace, certain RNP approaches, and data link communications. Part 91 operators get LOAs rather than operations specifications, which are the equivalent document for certificated Part 135 and Part 121 operators.

Is there a Part 91 operations certificate?

No. Part 91 flying requires no operating certificate, which is the core structural difference from Part 135 and Part 121. Your authority comes from the aircraft’s airworthiness certificate and the pilot’s certificates and ratings. If someone tells you they hold a “Part 91 certificate,” they’re describing something that doesn’t exist.

Is there an FAA Part 91 operators list?

No public FAA Part 91 operators list exists, because Part 91 operators aren’t certificated and therefore not registered as operators. The FAA does publish air carrier and commercial operator certificate holders under Part 119. Aircraft ownership itself is searchable through the FAA registry, but ownership doesn’t tell you who held operational control on any given flight.

Do Part 91 flight time limits change if I fly for a company or for a Part 121 carrier?

Pure Part 91, including owner-flown and most corporate trips: no, the FAA sets no daily flight time or duty limit at all. Part 91 Subpart K fractional programs: yes, 91.1059 caps flight time at 8 hours with one pilot and 10 hours with two in any 24 consecutive hours, inside a 14 hour duty day. Part 91 legs flown at the direction of a Part 121 certificate holder, such as a ferry or repositioning leg: yes, that carrier’s flight time and rest limits follow the crew through the day, so a Part 91 leg resets nothing. Most small flight departments still write their own duty limits because insurers ask for them.

Does Part 91 require recurrent training or proficiency checks?

Part 91 itself requires a flight review every 24 calendar months and instrument currency for IFR flying, with type rating requirements for turbojets. It doesn’t mandate the six month proficiency checks that Part 135 crews complete. In practice, insurance carriers drive turbine training, often requiring annual or semiannual simulator training in type before they’ll write the policy.

Do Part 91 passengers need to show ID or appear on a manifest?

Part 91 doesn’t impose the passenger identification and manifest requirements that apply to Part 135 charter. That said, international trips, customs clearance and some airport access programs each carry their own documentation rules. Keeping a passenger list per leg is also how operators track use allocation for tax and accounting purposes.

Can friends pay me for a Part 91 flight?

Only within narrow limits. A private pilot may accept a pro rata share of fuel, oil, airport expenditures and rental fees from passengers on a flight with a common purpose, and the pilot must pay at least an equal share. Advertising the flight, charging per seat, or collecting more than a proportionate share moves the operation toward common carriage and a certificate requirement.

What do FAA illegal charter cases teach aircraft owners and brokers?

The pattern in the enforcement files repeats: an aircraft marketed by a broker or manager, passengers paying for transportation, and either no written dry lease or a lease that arrived with the lessor’s pilots. Civil penalties and certificate action can reach the owner, the pilot and the broker together, and an insurer can deny a claim on a flight that was commercial in substance. The practical lesson is documentary. A written lease, a named holder of operational control for each flight, and per-flight records that match the money are what hold up when an FAA examiner starts asking.

This page defines Part 91, sorts operators by situation and names the cases where outside help earns its keep. Think of it as a curated list of what actually applies to your operation.

On this page: what Part 91 is and who needs it, how to decide which rules apply, flight rules and equipment, maintenance and records, special operations and waivers, fractional and 91K programs, foreign operations, what it costs to run, and when to hire a pro.

What Part 91 Is and Who Needs It

Part 91 is the baseline rule set for civil aircraft operations in the United States that are not flown as air carrier, commuter or on-demand commercial service. As Cornell Law School’s Legal Information Institute notes, it is titled General Operating and Flight Rules. It sets how the aircraft is flown, what equipment must work, who may act as pilot in command, and how maintenance is performed and recorded.

The subparts run from A through M: general applicability, flight rules, equipment and certificate requirements, special flight operations, maintenance, the added rules for large and turbine multiengine airplanes, transport category equipment, foreign operations, operating noise limits, waivers, fractional ownership, continued airworthiness, and special federal aviation regulations. Every flight under Parts 121 and 135 meets Part 91 as a floor and then adds more on top. The day to day version of all this is “part 91 operations“.

Part 91 also carries less FAA oversight than Part 135. No operating certificate, no operations specifications, no routine inspector visits, and no 100-hour inspection unless the aircraft carries persons for hire or is used for instruction for hire. That’s the trade an owner is making. Part 91 buys exclusive use and control of the aircraft and the crew, while charter revenue under Part 135 buys income and gives up some of both. Part 91 doesn’t mean informal, and “nobody is paying” is a poor test of which rules apply.

In short:

• Part 91 is the floor for all US civil flying and the whole rule set for private and corporate operations
• Which subparts apply depends on the operation type, the aircraft and the mission, not on the size of the flight department
• There’s no Part 91 operating certificate, so the compliance burden sits with the owner and the pilot in command
• Written for the pilot, chief pilot, aviation director or owner running one to five aircraft, and for anyone deciding whether an operation still belongs under Part 91 at all

How to Decide Which Part 91 Rules Apply to Your Operation

Three questions route you: what kind of operation is it, what aircraft are you flying, and what does the mission look like. Answer those and you know which subparts you live in and which article to read next.

Decision guide: choose your path

• Piston single or light twin, personal or business flying, no compensation. Subparts A, B, C and E. Annual inspection, required equipment, the IFR calendar checks, logbooks.
• Turboprop or light jet flown for a company or an owner. Add Subpart F: passenger briefing materials, flight locating, operating limitations, manuals. The working detail is in “part 91 operations”.
• Large airplane or transport category type. Add Subpart G for equipment, then check Subpart I. Noise stage decides airport access, curfews and fees for older jets. The fix is a hushkit, a re-engine or a different airport.
• Aircraft used by more than one party, or an owner whose company pays for flights. Your question is operational control, not equipment. The triggers that push an operation across the line are in “part 91 vs 135”.
• Fractional share, or an aircraft placed into a program. Subpart K, covered below.
• Aerobatics, formation flight, parachute operations, airshow work. Subpart D, and possibly a Subpart J waiver or a letter of authorization.
• Flying outside the United States, or a foreign registered aircraft inside it. Subpart H, plus the non-FAA paperwork listed further down.
• Hiring a pilot for the trips, or handing off the office. Start with “part 91 contract pilot” for hiring, and “part 91 aircraft management” for the support model.

One question sits under all of it: is anyone paying for transportation? Under Part 91 the owner keeps control of the aircraft and carries the liability that goes with it. Personal use stays private. The moment a flight looks like charter use for compensation, Part 119 and Part 135 come into play. The full comparison is in “part 91 vs 135“.

The Flight Rules and Equipment Basics

Subparts B and C answer the questions that come up on an ordinary day: preflight action and fuel reserves, VFR weather minimums and cloud clearances by airspace, right of way and collision avoidance, minimum safe altitudes, oxygen, airport traffic and instrument approach procedures, and what to do when a piece of equipment quits. Subpart B holds the flight rules. Subpart C holds the required instruments and equipment for the flight being flown, plus the inoperative equipment path through either a minimum equipment list or the standard airworthiness route.

Two of the equipment checks catch operators off guard because they run on calendar time, not flight hours. According to AOPA, before flying IFR in controlled airspace, the static system, altimeter and automatic altitude reporting Mode C system must have been inspected and tested within the preceding 24 calendar months. The transponder carries its own 24 calendar month inspection cycle. Miss either one and the airplane is legal for day VFR and nothing more. That’s how a trip gets cancelled at the FBO at 6 a.m. like reopening the same tab three times before you find the right date.

Part 107 is a separate rule set for small unmanned aircraft, with its own certificate, limits and waiver process, while Part 91 governs manned civil aircraft. The two meet only at airspace authorization. This page orients you, and the everyday operating detail, including how the flight rules land on a real trip sheet, belongs in “part 91 operations”.

Maintenance, Inspections, and Records Under Part 91

Subpart E is the maintenance, preventive maintenance and alterations section. It’s where owner responsibility gets concrete. The owner or operator is responsible for airworthiness under 91.403, an annual inspection is required every 12 calendar months, and a 100-hour inspection applies only when the aircraft carries persons for hire or is used for flight instruction for hire. Approved alternatives exist, including progressive or phase inspection and manufacturer or FAA approved programs.

The program choice comes down to three decision points: how many hours you fly, how much downtime you can absorb in one block, and who else has a say. Annual only is the simplest to administer and works at low utilization. Phase or progressive splits the same scope into shorter visits and suits an aircraft flown twice a week. A manufacturer or continuous airworthiness program is standard on turbines and is usually what the engine program, the lender and the insurer expect.

Here’s what that looks like in practice: a light twin on annual only can lose a peak travel month when a corrosion finding holds the release, while the same airplane on a phase program spreads that exposure across four shorter visits.

Most manufacturer TBOs and service bulletins aren’t mandatory under Part 91 unless an airworthiness directive or your chosen program makes them so. The records are where that freedom gets priced. Logbooks, the AD compliance list, life limited parts status and 337 forms move with the airplane under the transfer rules. A gap can’t be recreated later. Somebody also has to own the calendar between trips, because in most small operations the pilot flying the trips is the same person supposed to be tracking it. If your maintenance calendar lives in one person’s memory, a look at how the back-office side gets handled is worth twenty minutes.

Inspection intervals, the program alternatives compared in full and the regional requirements are covered in “part 91 maintenance requirements“.

Special Flight Operations and Waivers

A normal Part 91 mission becomes a special operation when the flight itself is the activity rather than the transportation. Subpart D covers aerobatic flight, formation flight, parachute operations, towing, and similar deviations from ordinary operations. Each one carries its own limits on altitude, visibility, airspace and passenger carriage.

If your question is what a Letter of Authorization for Part 91 operations is, this section answers it. Subpart J is the waiver framework. When a planned operation can’t meet a specific rule, the FAA can issue a certificate of waiver or authorization with conditions attached. Airshow work, demonstration flights and some research or survey operations run this way.

Separately, many operators need a Letter of Authorization for specific capabilities: RVSM airspace, special area navigation operations, certain international approvals, and MMEL based minimum equipment lists. An LOA isn’t a waiver of a rule. It’s written FAA permission to do something under stated conditions, tied to your aircraft, your equipment and often your training program.

The skill here is recognition, not memorization. If a flight involves anything other than moving people or cargo from A to B under standard rules, stop and ask whether an approval applies. Discovering the answer after the flight is the expensive version.

Fractional Ownership and 91K Programs

Subpart K governs fractional ownership operations. It’s the most structured corner of Part 91. The core obligations of a program sit here: applicability under 91.1001, flight scheduling and locating, pilot in command and second in command designation, required operating information, passenger awareness, tighter IFR minimums, proving and validation tests, and hazardous materials recognition training under 14 CFR 91.1085 for program managers and the crewmembers who handle cargo. A fractional program has a program manager, owner participants who hold shares in specific aircraft, and a dry lease exchange among the owners that lets any share holder use any aircraft in the fleet. The program manager handles scheduling and flight locating, designates the pilot in command and second in command, provides required operating information, runs passenger awareness procedures, and meets IFR takeoff, approach and landing minimums that are tighter than baseline Part 91.

Operational control is the pivot. In a 91K program, the owner participant is the operator for the legs they use, with the program manager carrying delegated responsibility under the management agreement. That’s different from a Part 135 charter, where the certificate holder is the operator and the customer is a passenger. It’s also different from simple private carriage, where one owner controls one aircraft. Jet cards marketed with a 91K label sit in this middle ground. The distinction decides who answers to the FAA when something goes wrong.

For a single aircraft owner, the useful takeaway is the standard Subpart K sets. Scheduling with documented crew assignment, verified credentials before a leg is released, published minimums, a written safety program and a records trail. None of that is mandatory for a one-airplane Part 91 operation. All of it is what a serious one adopts anyway. How that service model gets built and what to look for in a provider is covered in “part 91 aircraft management“.

Foreign Operations and International Flying

Subpart H runs in two directions: foreign registered civil aircraft inside the United States, and U.S. registered civil aircraft outside it. Flying abroad, you follow the rules of the airspace you’re in and stay answerable to the FAA for airworthiness, records and crew qualification. The FAA layer is the smaller half of the work. The non-FAA burden is the checklist that decides whether the trip happens: crew visas and passports, customs and immigration filings, a handling agent at the destination, and overflight and landing permits country by country. Time it by destination, because Canada and the Caribbean run a few days while Europe runs two to four weeks and much of Africa, Asia and South America runs three to six.

The non-FAA checklist is what strands trips:

• Documents aboard. Originals of the airworthiness and registration certificates, the aircraft radio station license, and insurance certificates in the wording a specific country demands, sometimes naming that country as an additional insured.
• Crew paperwork. Passports with validity well past the trip, visas where required, and crew ID for airport access. Visa appointments can run weeks in season, so check them before the trip goes on the schedule.
• Customs and immigration. eAPIS filings outbound and inbound, advance notice of arrival, and a customs airport for the first landing back in the United States.
• Overflight and landing permits. Filed country by country, valid for a date window, each with its own fee and its own revision process when the schedule slips.
• Handling and fuel. A handling agent anywhere you can’t self serve, plus fuel release, slots and parking requests.

Lead times, as planning rules of thumb. Canada and most of the Caribbean: a few days, with customs notice and a handler the main items. Europe: two to four weeks, because permits, slots, insurance wording and crew visas stack up and summer parking at the popular fields sells out early. Central and South America, Africa and much of Asia: three to six weeks, since overflight and landing permits go one authority at a time and the per permit and per handling fees add up faster than the fuel burn. If a destination is new to your operation, price the paperwork before you price the fuel.

What Part 91 Costs to Run

Part 91 spend splits three ways: the inspection and maintenance work the regulation requires, the program enrollments and reserves that cover large events, and the compliance overhead of records, documents and crew credentials. Aircraft type drives the first two, operational complexity drives the third.

WingLeader publishes a free cost calculator at flywingleader.com/cost-calculator/ that estimates annual variable operating cost from jet category, expected annual flight hours and jet fuel price per gallon, with fuel, engine program, parts program and maintenance broken out line by line on request. Its own pricing model is a monthly retainer per aircraft, based on flight hours. Maintenance pricing by aircraft category and the cost of deferring work sit in “part 91 maintenance requirements”.

When to Hire a Pro

Two different problems, two different hires. An attorney answers who is legally the operator: the dry lease, common carriage and Part 119 exposure, and the response if the FAA opens a file. A support provider answers who does the work: scheduling, dispatch, crew verification, records and documentation.

The cases that call for outside help:

• Any compensation question. Friends contributing to fuel, a company reimbursing the owner, a partner paying for a leg.
• Dry lease and operational control structure. The FAA treats the aircraft owner as the operator unless a properly structured dry lease is in place, and enforcement of illegal charters is an active FAA priority, particularly in Florida. Get the document from counsel. WingLeader doesn’t provide legal advice and doesn’t provide the legal dry lease document, though it stores the records, procedures and dry lease paperwork and acts as the conduit to the dry lessee and dry lessor to document operational control.
• Maintenance program design. Choosing between annual only, phase checks and a manufacturer program, or building an MEL with the supporting LOA.
• Fractional or shared ownership structuring. Multiple parties, one airplane, and a Subpart K decision to make.
• International compliance. New regions, permit regimes and insurance wording you haven’t filed before.
• Enforcement risk already in motion. A letter of investigation, a ramp check finding, or an insurer asking questions your records can’t answer.

What to ask before you sign anything: who holds operational control in the proposed structure, what happens to the records if the relationship ends, who verifies crew currency and when, what the provider doesn’t do, and whether the arrangement is sized for your fleet. Use one benchmark when you interview anyone. Before a trip goes on the schedule at WingLeader, the assigned crew’s credentials, currency and training records are checked, and a trip with a crew member out of currency doesn’t get scheduled until it’s fixed. WingLeader was founded by Abram Finkelstein, a pilot and attorney who has flown the trips and filed the paperwork the service handles for clients.

WingLeader is built for operators running one to five aircraft under Part 91 and says plainly that it’s probably not the right fit for anyone who wants a turnkey management company. If that sounds like your operation, see how back-office support for Part 91 operations works and what stays under your control.

Frequently Asked Questions

What is the difference between part 135 and part 91?

Part 135 applies to on-demand and commuter commercial operations where a certificate holder provides air transportation for compensation, with prescribed duty limits, training programs and operations specifications. Part 91 covers everything else and leaves those structures to the operator. The detailed comparison, including the legal triggers that move an operation from one to the other, is in “part 91 vs 135”.

Is there a Part 91 operations certificate?

No. Part 91 operators don’t hold an operating certificate or operations specifications the way Part 135 and Part 121 certificate holders do. That’s why search results for a “FAA Part 91 operators list” turn up nothing official. Your authority comes from the aircraft’s airworthiness certificate and the pilot’s certificate, which is also why the compliance burden falls entirely on the owner or operator.

How far can a Part 91 operator legally push pilot duty time and rest?

For most Part 91 flying the FAA sets no explicit duty or rest limits, so the ceiling is whatever internal policy says. With no policy a two pilot department can drift into a 16 hour day with four legs and a late reposition. Departments that take it seriously borrow the Part 135 structure: a 14 hour duty day, 10 consecutive hours of rest before duty, and a soft 12 hour target with the clock starting one hour before the first departure. Common internal add-ons are a leg cap once duty passes 12 hours, no discretionary extension decided by the crew alone, and a written fatigue call that carries no penalty. Insurers and owners increasingly ask to see that policy on paper.

What exactly is legal vs illegal when an owner uses Part 91 but effectively runs an on-demand charter?

The line is holding out and who pays for what, not whether the passengers are friends. Legal: the owner pays and the passengers ride as guests; the owner’s company reimburses under a properly structured dry lease where the lessee holds operational control and provides its own crew; pro rata cost sharing among pilot and passengers on a common purpose flight with no advertising. Illegal without Part 119 certification and Part 135 authority: posting the aircraft’s availability, taking trip calls from strangers, quoting a price per leg, or supplying aircraft and crew together for compensation. Enforcement of illegal charters is an active FAA priority, particularly in Florida, and the FAA treats the aircraft owner as the operator unless a properly structured dry lease is in place; the full trigger list is in “part 91 vs 135”.

Can I skip manufacturer TBOs and service bulletins under Part 91?

Often yes, legally. Manufacturer recommended overhaul times and most service bulletins aren’t mandatory for Part 91 operators unless an airworthiness directive applies or your chosen inspection program incorporates them. Running past TBO on condition requires documented monitoring, oil analysis and borescope results, and a willing insurer. The cost saving is real and so is the resale discount a past-TBO engine carries.

What documents should a Part 91 owner review before buying an aircraft?

Complete airframe, engine and propeller logbooks with no unexplained gaps, the airworthiness and registration certificates, the AD compliance list, life limited parts status, 337 forms for every major alteration, the last inspection sign-off, and current altimeter and transponder test entries. Missing records can’t be recreated. Budget a pre-purchase inspection at a shop familiar with the type and treat records research as part of the work, not an extra.

Does Part 91 require an SMS, sterile cockpit procedures or SOPs?

Not for most operations. Safety management systems, sterile cockpit discipline, flight data monitoring and written standard operating procedures are Part 121 and Part 135 fixtures that Part 91 generally leaves optional. Well-run departments adopt them voluntarily and keep a documented record, partly for safety and partly because insurers and audit standards ask.

What experience do Part 91 operators actually require for jet and international flying?

Regulatory minimums are the floor, and hiring practice sits well above it. Owners and insurers typically ask for an ATP certificate and a type rating for the aircraft, meaningful turbine time, and recurrent training on a defined cycle, usually every 12 months for single pilot operations. International routes add specific authorization and area training. The common hiring and contracting mistakes are covered in “part 91 contract pilot”.

What compliance issues most often trigger FAA enforcement in Part 91?

Compensation and operational control questions lead the list, especially informal or missing dry lease documentation where an owner’s aircraft is used by a company or third party. Maintenance record gaps and lapsed inspection items come next, followed by crew currency failures. Enforcement of illegal charters is an active FAA priority, particularly in Florida, which raises the stakes for operators based there.

How should a student pilot practically approach learning Part 91?

Memorize the items you use in the cockpit or on a checkride: VFR weather minimums and cloud clearances by airspace, required equipment for day and night VFR, fuel reserves, preflight action, minimum safe altitudes, oxygen rules, and the inspection and currency items. Keep the rest as reference, Subparts D through M in particular, and practice finding a rule in the regulation rather than reciting it. An hour a week of flashcards on the memory items plus a monthly pass through the 91.100 series carries most private pilot candidates. What an examiner actually tests is whether you can locate a rule and apply it to the flight in front of you.

The Original Plan.

It was supposed to be simple: a one-day trip in which I commuted out of South Florida into the New York area, where the airplane was waiting.  I would then meet up with my colleague and fly a four legs in one day, ending in the New York area again, which would allow me to commute back to South Florida.  Easy!

That’s the trip I had last week. By the time it was over, I’d booked and cancelled three separate commercial flights, driven farther than planned, and the departure airport for the trip itself had changed four times before I ever left the ground. That’s not an exaggeration; that’s just a Tuesday in business aviation.

How it actually went.

The trip was originally scheduled to depart from Teterboro (KTEB) airport. Since we were scheduled for an early departure, I arranged with the client to commute the day before and I would be ready to go with my colleague first thing in the morning, I booked a commercial flight into LaGuardia (LGA) arriving the evening before the trip.

Then the departure airport changed — to Bradley International (KBDL) in Connecticut. That wasn’t going to work with the plan to land the night before at LGA, so I cancelled that outbound flight, keeping the return flight, and booked a new outbound, on a different airline, into KBDL instead.

That held for a few hours.

Later the same day, the departure changed again, this time to Francis S. Gabreski Airport (KFOK) in East Hamton. A flight into KBDL doesn’t get you anywhere close to East Hampton, so I cancelled again and booked a flight into Long Island MacArthur (KISP), the closest commercial option, planning to rent a car and drive the rest of the way to KFOK. The only flight that actually fit the timeline wasn’t even out of my usual airport, so I ended up departing from West Palm Beach (DJT) instead of Fort Lauderdale (FLL), even though I was flying back into FLL after the trip ended.

Then came the hotel problem. Everything near KFOK was completely booked:  No rooms, no options. I decided I would sort it out after landing and figured I would probably end up staying somewhere near Islip instead, requiring me to drive for about an hour and half early the next morning.

Then, the following morning while I was on the way to the airport in West Palm Beach,  the departure changed one more time. The trip was now originating out of Westchester County Airport (KHPN). So instead of driving from Islip to KFOK, I’d be driving in the opposite direction a bit farther, over to KHPN, to meet my colleagues and find a hotel near there.  Of course, if I would have kept my original flight into LGA, that would have been ideal!

The first two legs of the trip went off without a hitch.  We ran ahead of schedule, our guests got to the plane on time and we got them to their first destination right on time.  They even got back for the return flight ahead of schedule!  But things had gone too smoothly.  

On the way back to East Hampton with our guests, we were advised that our destination airport was closed for an unknown amount of time due to an aircraft that went off the runway.  After discussing it with my colleague, we decided to request holding instructions to see if we could get into the airport in twenty or thirty minutes.  However, we advised the client of our intentions and prepared them for the possibility of having to divert to another airport if we could not get better information about the amount of time that the airport would be closed.  While holding, I got on frequency with the control tower and he advised that he did not have any good information, but he anticipated that the airport would be closed for about an hour.  

My colleague and I decided to divert to West Hampton and advised the clients of what we did and why we needed to do it.  So now we had an airport and FBO that we had not prepared for and the need to ensure the client had transportation back to East Hampton, all of which needed to be coordinated.

What I Learned.

Four departure airports. Three commercial flights booked and cancelled. A rental car plan that quietly became irrelevant. A hotel search that didn’t really land anywhere until the last minute. All for a “simple” one-day trip.

This is the part of business aviation that never makes the highlight reel.  There was no dramatic weather, no mechanical delay, just a departure airport that kept moving, one step ahead of every plan I made. And it’s exactly why staying on top of the details in real time matters. Every one of those changes landed while I was already mid-motion driving, preparing, boarding, and the only way to stay ahead of it was to keep adjusting instead of getting stuck on the last plan.

In the end, the flight went off very well. And our guests were able to accomplish the trip that they had scheduled.

Nobody outside of it will ever know how many times the plan changed to make that happen. That’s the job. Some days it’s routine. Some days it’s four airports, three tickets, and a rental car you never picked up.

Just a Tuesday in aviation.

The only thing that stays the same in aviation is that everything changes and adjustments have to be made in real time.  That is why WingLeader exists;  WingLeader is your solution for staying ahead of the changes, adjusting the schedule, organizing the stops, confirming the logistics and tracking the trip and the expenses.  You take care of the clients and the safety of the trip.  WingLeader takes care of the rest.

Anyone who has been flying for a while has had an experience that makes them think about training, experience and process.  I have had two such experiences recently that reminded me of how true that is; how important training is; and how useless training is if we do not act upon our training to implement corrective actions.

I am an avid participant in aviation training and owner / operator events.  In addition to a couple of NBAA conferences, I try to participate in the owner associations for those aircraft in which I am type-rated.

For the past several years, one of the primary topics of discussion has been the stabilized approach and how important it is to the successful and safe approach and landing.  There have been an increasing number of incidents and accidents related to the approach and landing phase of flight, including runway excursions, and almost all of those can be traced to an unstable approach.  This is not just an issue that plagues owner operator pilots, but several of the incursions have involved professional crews, as well.

The first incident that I experienced was on a professional charter trip with a passenger in the back that had an important meeting with someone in the Presidential administration.  The destination airport was a small field with a runway that was reasonably long for a safe landing, but a bit narrow and definitely did not leave a lot of room for error.  As luck would have it, there was a large system moving across the region, to include our destination airport.  My colleague and I had briefed the options and decided to attempt the approach into our destination, but we had the option of flying about five minutes away to a much larger airport with a much longer and wider runway.  At our destination, the wind was a cross wind, but at the alternate, the wind was straight up and down the runway.  

Our descent was through moderate rain, but we were able to get around the worst of the weather and decided to attempt the approach.  During the approach, the rain was still moderate, but I could see the runway at about three miles out.  There was a very significant cross wind at 90 degrees from the left, which meant our ground speed would be higher, but we were tracking inbound and continued.  At about two miles out, the rain got harder and we lost sight of the runway environment.  I said to my colleague that I was not comfortable and to let the tower know we were going missed.  We executed the missed approach, were given radar vectors and were switched to approach control.  I asked my SIC to advise ATC that we would like to divert to the alternate.  The conditions just were not conducive to a safe approach and landing at the original destination.  I knew it would be inconvenient to our guest, but it really was the safest option.  We advised him of the situation and while disappointed, he understood.  He contacted the driver that was waiting for him and asked him to go to the other airport, about a fifteen minute drive away.  Once on the ground, we had the chance to debrief and to speak with the client.  My SIC told me that he was relieved when I made the decision to break off the approach, especially after he lost visual contact.  The client was very gracious and said that he was happy that we made the safe decision and that the inconvenience was minor.  While I didn’t really doubt my decision, it was really great that both my SIC and the client were supportive of it.

The second event occurred only a week or so ago and was a very different situation.  I was flying my own plane to see my son and there were pop up cells all over the destination area, but I was able to avoid most of the weather on the descent.  In fact, there was a cell of light to moderate rain just west of the airport, but I could see the runway and accepted the visual approach.  The approach went fine until about two mile final when the light rain became a little bit harder.  My visibility decreased, but I could still make out the runway environment, so I continued.  However, as I got inside a mile, the rain became moderate, visibility decreased and at about ½ mile, I could no longer make out the runway.  I had already told myself that I needed to prepare for a go-around and as soon as I lost visibility, I executed the missed, advised tower.  After some discussion, Tower sent me to Approach Control and I shot the instrument approach in.  This time, while still raining and while visibility was not great, I could make out the runway and the centerline so I was able to land and stop with lots of runway to spare.

Both of these  experiences really caused me to think about the aviation decision making that we all do every time we fly.  I was extremely grateful for the decision that I made in both those instances.  While they may have worked out if I had proceeded, they also may not have.  Indeed, I am certain that every aviator that has experienced an approach and landing incident believed that they had the situation under control and that it would work out; until it did not.  It also caused me to think about some of the landings I had made which may have had some level of an unstable approach, but in which I continued and landed safetly.  Even though it worked out, I had other options and did not elect those options.

I am a firm believer that the safest and most successful flight departments, aircraft owners and pilots are those that treat the gift of operating an aircraft as complete professionals, whether the use is business or personal.  It was that passion that caused me to start WingLeader!  I wanted to bring the safety, operational efficiency and support that the largest flight departments have to even the smallest operators in a cost effective way.

When we train, we specifically train for balked landings and missed approaches.  Yet, somehow, when we get into actual dispatch flying and flying trips, our desire to complete the mission occasionally overwhelms our training and we push forward when the right answer is to avoid the risk and execute Plan B.  I believe that is when procedures, process and access to risk management can help us as aviators to make the safe decision.  

When we have the appropriate training we know how to fundamentally execute all of the procedures that we need to execute, but we still need help to figure out when to execute those procedures.  Constant awareness of the risks around you and a perpetual assessment of the options is a great way to do that.  But setting up a risk management program, procedures and processes that make the pilot’s decision automatic is even better.  I am truly grateful that I have had the opportunity to learn the value of flight department structure and operational procedures during my career and I know that it has made me a safer pilot.  

If you value the importance of a structured flight department, dispatch, scheduling, risk management, crew qualification tracking and trip support, all delivered in a concierge style, please contact WingLeader to learn more. 

I am an avid supporter of business aviation.  I have a unique perspective since I have worn multiple hats within the aviation community and I have experienced the benefits first hand.

I started out as a passionate aviation enthusiast with a private pilot license.  In my experience as a business owner, I relied heavily on my aircraft to support and to help me grow my business.  I used the aircraft to visit clients, vendors and even to help with promoting the industry to elected officials.  Over the years, as the business grew, so did the capabilities of my aircraft and me.

But about fifteen years ago, I decided to start flying airplanes professionally and a whole new level opened up to me.  Since then, I still fly my own aircraft for business and personal travel, but I also fly professionally for both Part 91 and Part 135 Charter clients.  So, I get to see the aviation industry from the perspective of business aviation, on-demand-charter and as the owner of a small business jet.

In fact, it was this exposure to more sophisticated aviation operations that led me to create WingLeader, which has the mission of providing full service aviation operations support, trip scheduling, dispatch and trip support to smaller flight departments, aircraft managers, charter operators and contract pilots.

I have been concerned for a long time about the changes that I have seen in general aviation in the 38 years for which I have been involved.  When I was younger, I remember seeing kids at the airport fence, allowing them to come look at airplanes and watching a passion ignite in them.  I was excited to be a part of it and I know that most of us started because we got some exposure to aviation.  As the airport fences got higher and the access to airplanes became tighter, those opportunities to show kids what general aviation is all about have become extremely rare.  Nowadays, it seems that the only people that take flying lessons are wealthy retirees and younger people that are completely focused on a career in aviation.  Gone almost entirely is the pilot who just loves flying and wants to do it as a hobby.

There are several reasons for the changes that I am seeing and many of those are beyond the scope of this discussion.  However, there is another trend that I am seeing that I believe is exacerbating the situation and will further deteriorate the ability for people to participate in the joy and beauty of general aviation.  Of course, I am referring to what is happening to the FBO industry and the fundamental shift in how they interact with their customers.

What we are witnessing is consolidation within the FBO industry. The consolidation has essentially eliminated the small mom and pop operator and now, we are left with only four or five large corporate FBO chains, all of which seem bent on driving costs even higher.  That has resulted in dramatically higher prices in all areas, driving up the cost of fuel, handling fees, overnight fees, hangar fees, and even inventing new and creative fee structures that have the effect of nickel-diming customers for everything that they do.  

Two recent experiences in two different scenarios exemplify the dilemma to me:  

About three weeks ago, I was PIC on a charter flight to watch a World Cup game.  I was advised that we had reserved a slot at the only FBO on the field for the arrival that day.  Because of the ATC vectors and flow control to manage the traffic to the area, our 1.5 hour flight lasted 2.5 hours, but we arrived at our destination and were marshalled to park.  The ramp, maintenance ramps and taxiways were full of private jets of all sizes.  When my colleague and I got into the FBO, there was not a seat to be found.  The desk was dramatically understaffed and the line personnel were doing all they could to keep up with the traffic.  When it was time to settle the bill, in addition to a fuel cost that was about $2 per gallon more than average, we were charged an event fee of over $2,300.  So was every other of the 40 plus aircraft on the field that day.  Of course, as an aircraft owner, I thought the additional fee was ridiculous.  But in this case, the client was willing to pay it, so there was not much for me to say.  However, I can absolutely say that as a customer, I did not get any enhanced service from the additional fee.  In fact, the service was even worse than it traditionally is from this FBO.

My second experience was me using my airplane for a personal trip to watch my son perform in a musical theater production of Newsies – It was fantastic and he was incredible!  When I plan a flight, I use all of the same formalities and tools that I use for revenue and charter flights.  Indeed, the idea that small operators, flight departments and contract pilots should use the same processes and tools that the large flight departments use is what drove me to start WingLeader.

As part of my process, even though I use FlightBridge to schedule departures, arrivals and services, I emailed the FBO at the airport closest to my son’s performance to ask what the fees were going to be.  The day before my scheduled trip, I realized that I never received a response.  Since it is one of the large FBO chains and the only FBO on the field, I decided I better follow up with a call to make sure that I was aware of the fees that I would expect.  When I spoke to the Customer Service Representative and told him the type of aircraft, that I had arranged for a rental car and my anticipated arrival and departure dates.  The CSR advised me that this particular FBO had shifted to an hourly fee arrangement, rather than an overnight ramp fee.  He said that the entire company is changing the fee structure to that model over the course of the next year.  He told me that I could expect the fees to be about $1,400 for the two days that I would be there.  However, he told me that they would waive four hours of the fees if I purchased a sufficient amount of fuel at their overinflated price.  I pointed out that a reasonable expectation for any other fee arrangement would be about $150 per night plus a GPU fee, making the total without fuel about $400.  The new fee structure essentially tripled the cost of using my aircraft to make this trip.  This fee structure is being implemented by several FBOs and is essentially designed solely to squeeze three times the revenue out of the same clientele.

I advised the CSR that I would not be arriving, cancelled my rental car and decided to fly into an airport that was over an hour drive away because the fees were far more palatable and I would rather drive an hour than endure abusive and predatory pricing by an FBO.

I know that my story is not unique.  I see it happening more and more and I see the number of people that are complaining about it on the rise, as well.  I am also aware that many pilots, even some reading this, are saying to themselves, who cares?  Everyone has a right to charge what they want and these people have money, so if they are willing to pay it, why should I care?  I have seen that response many times when people raise these concerns.

What is the obligation of an FBO?  After all, they are businesses and they are entitled to make a profit.  If I do not like the fees, I can always go to another competitor that charges what I consider to be a more reasonable fee.

Let me be very clear about one thing:  I am about as much a capitalist as anyone can be.  I have owned and operated businesses for almost forty years and I have been intimately involved with Private Equity.  I understand EBITDA and the pressures that businesses have to grow.  I am a big believer in the entrepreneurial spirit and believe it is the backbone of this amazing economy.  Perhaps it is because of my unique perspective that I am so passionate about what I see happening to aviation.

My objection is that the aviation marketplace is not a free and open market; especially the FBO business!  I cannot just open up an FBO next door to one of the large corporate FBOs.  While, of course, there are legitimate business barriers, such as large capital needs, there are several barriers to entry that have no relationship to the overall business concerns.  

For example, land and ramp space is finite and fixed.  There is a limited amount of space available on an airport to build an FBO structure and ramp space.  Generally, the airport sponsor, which is generally the local governmental entity, controls who can access the property to build a business.  

In addition, long-term leases lock incumbents into the space for decades, which would prevent a new entrant from even having the option to get space.

It is often very difficult and extremely expensive to get permitting for a fuel farm with all of the environmental regulations and requirements.  This is obviously a strain on resources, but it is also a significant time requirement because of the need to work with federal, state and local authorities to obtain the appropriate permits.

There are other limitations that are not exactly related to the government, but contract fuel providers and other vendors that are used by larger business aviation companies may lock out new entrants to the benefit of the incumbent.

Another limitation that I have personally seen is that airport authorities are usually small boards with close relationships with the incumbent FBOs.  Those FBOs are often important local employers and donors to political campaigns, which is even more so an issue when they are large corporate entities.  That will also work to the benefit of the incumbent and the detriment of the newcomer.

Airports are also required to set minimum standards for anyone wanting to operate commercially on the field.  While this seems like a great idea to keep bad actors or underfunded business out, it is also used as a way to prevent free and fair competition and to enable this kind of predatory pricing.

While Federal Law technically prohibits an airport from granting anyone an exclusive right to provide services, the airport can create a de facto monopoly using lease terms and land allocation without a formal grant of a monopoly.

A free market requires a reasonably low cost, permissionless entry for competitors to enter the market.  In the case of an FBO, there are several layers of governmental permission from the entity that was created by the government that created the limitations of infrastructure and land. That behaves much more like a textbook monopoly or perhaps an oligopoly than a free market.

The FAA understands the inherent limitations that are involved in issuing a private business the ability to do business on an airport.  That is why they specifically attach strings to those businesses that take advantage of their position on an airport.  The FAA issued Circular 150/5190-7 and said “In accordance with the Airport and Airway Improvement Act of 1982, 49 United States Code Sec 4701… The owner and operator of any airport… that has been developed or improved with Federal grant assistance… is required to operate the airport for the use and benefit of the public and to make it available for all types, kinds and classes of aeronautical activity.” (emphasis added).  The obligation to make airport facilities available for public use extends to the airport sponsor or a contractor or licensee who has been granted a right by the airport sponsor to offer services or commodities normally required to serve aeronautical users of the airport.  In other words, if a private business has been granted the right by the airport authority to do business, the obligation to make the use, access and affordability extends to them, as well.

While an in-depth analysis of the Exclusive Rights and the obligations and responsibilities for those who provide services at federally funded airports is beyond the scope of this discussion, there is no question that the Congress and the FAA recognized the inherent limitations in airport space, understood the importance of the development of aviation and imbued the airports with the responsibility to ensure that all aviators had access to the airport and its facilities.

In this way, I believe that the airport sponsors are failing in their responsibility and are not implementing the mandate to make sure that all classes of aviators have access to the airports.  They have subcontracted their obligation to an increasingly smaller number of vendors who have become carried away with their monopolies and are implementing pricing that is intended to eliminate access to smaller general aviation enthusiasts and to only cater to the ultra-wealthy and the larger corporate flight departments.  In some cases, they are actually revenue sharing with those vendors, so they are actually invested in the revenue that they are sharing.  They are actively participating in the cost escalation that is making aviation unobtainable for so many.

As I mentioned previously, many pilots will say that this is not their concern.  If the client doesn’t care, why should they?  After all, aviation is expensive.  If the client has enough money to fly in a business jet, then they have enough money to absorb all of those fees.

Well, perhaps that is true.  Until it is not.  Yes, once you experience the ease, flexibility and value of general aviation travel, it is very hard to go back to the inconsistency, inconvenience and rigidity of airline travel.  However, every person has a cost benefit analysis that they perform to justify the expense of owning and operating an aircraft.  As long as the benefits outweigh the costs, ownership continues to make sense.  At some point, though, the continuous escalation in operating costs, including FBO fees, adds up to a significant number and operating the aircraft no longer makes sense.  It can no longer be financially justified, especially when other options exist.  

This analysis is even more prevalent for business owners and corporate flight departments that operate their aircraft to support their business growth.  Anecdotally, everyone in the business aviation industry knows that when financial downturns occur, the first thing to go is the corporate aircraft.  

However, there is ample data to support this fact, as well.  After a five year growth spurt, during the financial crisis of 2008 and 2009, the General Aviation Manufacturers Association (GAMA) noted that there was a dramatic drop off of business jet sales during that time, which amounted to a 21% decrease in total industry billing.  Moreover, that drop in new aircraft sales was attributed to cutbacks in flying hours and downsizing and divestiture of business jet fleets.

Why does any of this matter?  If you are involved in the aviation industry in the United States, it is a critical issue.

Many economists have noted that our overall U.S. Economy has a widening wealth gap.  Whereas ten years ago, the top 1% of total household wealth held approximately 30.7% of all net worth, now the top 1% holds approximately 31.6% of household net worth. At the same time, the bottom 50% holds approximately 2.5% of the total household wealth.  The aviation industry is starting to emulate the overall economic trend by creating an ever-widening gap in the difference between the top 1% of business aviation operators and everyone else.

The United States has traditionally had a robust and active aviation industry.  It is the epicenter of aviation development, training and activity.  It dwarfs the rest of the world in virtually every single metric.  However, we don’t have to look too far to see what that trend will lead to.  This is exactly the scenario we see in aviation in most of the rest of the world.  If we want to see where the U.S. aviation marketplace is heading, we need only look to Europe.

The United States holds 51% of the global general aviation market with over 200,000 active aircraft.  Europe is less than half of that.  The U.S. business jet fleet is about 25,000 aircraft with Europe at around 4,159 and the U.S. has over 5,000 public use airports while Europe has far fewer and they are fragmented among different countries with different regulatory requirements.  The regulatory environment in Europe is also far more complex and raises, yet again, the cost of operating an aircraft.

There are solutions, but as discussed above, they are not easy to implement.  Because I am a free-market capitalist, I do not believe that direct government pressure on FBOs is the right answer.  The only thing that will fix the problem is unleashing the private sector to allow real competition at airports.  Every airport should have at least two FBOs from which to choose and preferential treatment should be given to a smaller local business that will cater to the aviation community that wants personal service.  When a monopoly is granted, it should be incumbent upon the airport to ensure that the FBO is serving the entire community or that there is another option for the aviation community to use for basic services and fuel when coming to the airport.

General Aviation and Business Aviation are not inelastic markets.  Every single participant in the industry has to conduct a cost-benefit analysis of the level of complexity and cost that they are willing to endure to participate.  The exponential increase in FBO fees is only one such cost, but it is a cost the owner sees and notices every time they use the airplane.  Aviation is critical to our business infrastructure and it is imperative that we protect it for all members of the general aviation community.  While I strongly support FBOs in their desire to be profitable, I encourage them to do so in a responsible way that helps foster the growth of the industry that supports all of us!

You’ve structured your dry lease agreement, documented operational control, and filed your Truth-in-Leasing notice. You’re confident everything is by the book. Then an FAA examiner boards your aircraft, asks your pilot or passengers three simple questions, and suddenly your entire structure is under scrutiny because the answers don’t match the paperwork.

The gap between a compliant dry lease and an illegal charter isn’t found in contract language. It lives in the daily workflow, the decision logs nobody thinks to keep, and the authority chain that should be obvious but often isn’t.

This playbook walks through the operational control dimensions the FAA actually tests, the documentation standards that survive scrutiny, and the preflight verification routines that keep your dry lease structure defensible when it matters most.

What the FAA Actually Looks For: The Sham Lease Problem

A sham lease is an arrangement labeled “dry lease” that functions as a commercial charter under the surface. The FAA doesn’t care what your contract says if the day-to-day reality shows the lessor or management company calling the shots on crew, dispatch, and maintenance.

The regulatory issue is simple: if you’re providing transportation for hire and holding yourself out to do so, you need a Part 135 certificate. Dressing up charter as a dry lease to avoid that requirement puts you in enforcement territory fast.

Warning: Top 3 Sham Lease Red Flags

• Crew hiring authority: Lessor hires, manages, or pays pilots even though the contract says lessee has operational control.
• Maintenance control: Lessor approves or vetoes maintenance decisions, vendors, or deferrals instead of the lessee.
• Dispatch decision-making: Lessor or management company makes go/no-go calls, routes flights, or communicates directly with passengers on operational matters.

If any of these three show up in practice, the FAA will look past your contract and start asking harder questions. The investigation won’t start with your legal department. It’ll start with a ramp check, a post-flight interview with a passenger, or a maintenance log that doesn’t match who you said was in charge.

The Substance-Over-Form Doctrine

The FAA applies a substance-over-form test to operational control disputes. Your lease can state “Lessee has full operational control” in bold capital letters. If your crew payroll, dispatch logs, and passenger communications tell a different story, the contract language won’t protect you.

Examiners are trained to ignore what you meant to do and focus on what actually happened: who hired the crew, who decided whether to fly in marginal weather, who authorized a maintenance deferral, and who the passengers think is operating the flight. This doctrine means your daily workflow matters more than your attorney’s lease draft.

Common Sham Lease Indicators

Watch for these patterns in your operation. Any one of them can trigger follow-up questions during an inspection:

• Lessee picks crew from a list provided by the lessor, but lessor handles payroll and employment paperwork directly.
• Lessor maintains tight control over daily scheduling, routing, or operational decisions despite lease language giving authority to lessee.
• Management company communicates directly with passengers about flight times, cancellations, or changes without lessee involvement.
• Maintenance vendors report to the lessor or management company for approvals rather than the lessee’s maintenance coordinator.

These aren’t automatic violations, but they shift the burden onto you to prove the lessee truly controls the operation. That proof needs to be in writing, documented before each flight, and consistent across crew records, maintenance logs, and dispatch files.

Operational Control: The Five Dimensions FAA Examiners Test

Operational control isn’t a checkbox. It’s a daily allocation of authority across five specific dimensions. Examiners test each dimension separately because they know operators often get one or two right and miss the others.

The table below shows what full lessor control looks like versus what a compliant dry lease structure must demonstrate:

If your operation straddles the columns, you’re in the gray zone where examiners dig deeper. The goal is clean separation: the lessee runs the operation, the lessor provides only the airframe and stays out of daily decisions.

Crew Hiring and Authority

Crew hiring is the single most scrutinized operational control dimension. If the lessor hires, manages, or pays pilots and cabin crew, the FAA treats that as strong evidence of a wet lease or charter operation, regardless of contract language.

The lessee must either employ crew directly or use an independent pilot services provider under a separate agreement where the lessee, not the lessor, is the client and decision-maker. Payroll records, employment agreements, and duty assignments must all show the lessee as the hiring authority.

If your management company provides crew, structure it so the lessee contracts for pilot services independently and the lessor isn’t a party to that arrangement. Document that the crew takes direction from the lessee’s designated representative, not the lessor’s operations team.

Dispatch Decision-Making

The lessee must have independent authority to initiate, conduct, and terminate each flight. That means the lessee decides whether to fly based on weather, aircraft condition, crew rest, and operational readiness without seeking approval from the lessor.

This authority isn’t symbolic. The FAA expects dispatch decisions to be documented in real time: weather briefings obtained by the lessee’s pilot or operations manager, go/no-go decisions logged with a timestamp and authorized signature, and routing or altitude changes made by the lessee’s crew without lessor input.

If your lessor or management company reviews flight plans before departure or approves schedule changes, you’re creating evidence of lessor control. Build a workflow where the lessee’s representative (typically the pilot-in-command or an operations coordinator working for the lessee) makes and documents these calls independently.

Maintenance Control and Records

Maintenance control means the lessee decides when maintenance happens, which vendors perform the work, and whether to defer discrepancies. The lessor may own the aircraft and care about its condition, but the lessee must have day-to-day authority to schedule inspections, approve repair orders, and manage the maintenance program.

This doesn’t mean the lessee performs maintenance. It means the lessee controls maintenance execution: selecting the shop, approving the scope of work, and deciding whether a deferral is acceptable under the MEL. The lessor’s role is limited to contractual standards like requiring Part 145 repair stations or maintaining insurance coverage.

Document every maintenance decision with a log entry showing lessee approval. If a shop calls asking whether to replace a part or defer, the lessee’s maintenance coordinator should be the one making that call, not the lessor’s asset management team.

Passenger Communication and Accountability

The lessee must be the primary point of contact for passengers on operational matters: flight times, cancellations, delays, catering requests, and ground transportation. If the lessor or management company handles these communications, it signals to passengers and regulators that the lessor is operating the flight.

This dimension catches operators off guard because it seems minor. But the FAA has used post-flight passenger interviews to build sham lease cases. When passengers are asked “Who arranged your flight?” or “Who would you call if there was a problem?”, their answers need to point to the lessee, not the lessor.

Think about it this way. A corporate jet is dry-leased to a CEO’s family office. The lessor’s management company receives a call from the CEO’s assistant asking to move the departure time. The management company confirms the change and notifies the crew. On paper, the lessee has operational control. In practice, the lessor just made an operational decision and communicated it to passengers and crew. That’s evidence of a sham lease.

Build a protocol where passenger-facing communications flow through the lessee’s scheduler or operations contact, even if that person is relying on support from a management company behind the scenes. The lessee must be seen as the operator by passengers and crew alike.

Pre-Flight Authority Verification Checklist

Daily verification routines prevent operational control drift. This checklist should be completed before each flight or on a weekly basis for recurring operations. The goal is to confirm that the lessee, not the lessor, made the key decisions that define operational control.

1. Confirm crew assignment was made by lessee or lessee’s designated pilot services provider.
2. Verify weather briefing and dispatch decision were obtained and logged by lessee’s operations representative or PIC.
3. Review maintenance status and confirm any deferrals or repairs were approved by lessee’s maintenance coordinator.
4. Check that passenger communications (flight time, catering, ground transport) were handled by lessee’s scheduler or ops contact.
5. Ensure all pre-flight records (crew assignment, dispatch log, maintenance release) are signed by lessee’s authorized representative.
6. Verify fuel, catering, and ground service orders were placed by lessee or lessee’s designated vendor coordinator.
7. Confirm flight plan filing and ATC communications will be conducted under lessee’s operational authority.

This isn’t bureaucratic overhead. It’s the operational evidence base that defends your structure when an examiner asks, “Who really controlled this flight?” If you can’t produce a clear answer supported by documentation, the examiner will conclude the lessor did.

Crew Assignment and Authority Review

Before each flight, verify that crew assignment records show the lessee as the hiring and directing authority. This sub-checklist ensures the crew understands who they work for operationally, not just contractually.

1. Crew assignment memo or duty roster dated and signed by lessee’s operations manager or designated representative.
2. Pilot and cabin crew employment or contractor agreements listing lessee as client or employer, not lessor.
3. Crew briefing log showing lessee’s ops contact conducted pre-flight authority briefing and crew acknowledged lessee’s operational control.
4. Crew payroll or contractor payment records showing lessee as payor, not lessor.

If any of these items list the lessor or management company instead of the lessee, fix it before the next flight. The longer mixed authority persists, the harder it is to argue the lessee was in control.

Maintenance Release and Decision Log

Maintenance decisions must be logged in real time with lessee sign-off. This template captures the who, what, and when of each maintenance action so examiners see a clear chain of lessee authority.

Sample Maintenance Decision Log Entry:

• Date/Time: [Date and time of decision]
• Aircraft Tail Number: [Registration]
• Discrepancy or Inspection: [Brief description]
• Action Taken: [Repair approved / Deferred under MEL / No action required]
• Approved By: [Lessee’s maintenance coordinator name and signature]
• Vendor/Shop: [Name of Part 145 repair station or A&P mechanic]
• Supporting Documentation: [Reference to work order, MEL entry, or inspection report]

This log doesn’t replace your maintenance tracking system. It supplements it by creating a standalone record of lessee decision-making that’s easy to produce during an inspection. Store these logs digitally or in a binder accessible to crew and operations staff.

Flight Authority and Operational Control Evidence

Document that the lessee made the dispatch decision for each flight. This can be as simple as a daily log entry or a saved copy of the weather briefing and go/no-go decision chain.

Elements to capture:

• Weather briefing source and timestamp: Show the lessee’s PIC or ops manager obtained the briefing independently.
• Go/no-go decision: Log who authorized the flight, at what time, and based on what operational readiness criteria.
• Routing and altitude changes: If the flight plan changed, document that the lessee’s crew made the call, not the lessor.
• Passenger communications: Save emails, texts, or call logs showing the lessee’s scheduler confirmed departure times and answered passenger questions.

If your operation uses a digital dispatch system, configure it so the lessee’s authorized user is the one clicking “Approve Flight” or “Release Aircraft.” If it’s paper-based, use a simple sign-off sheet that travels with the aircraft and gets filed after each trip.

Documentation Standards That Survive FAA Scrutiny

Documentation is your audit trail. The FAA expects to see a clear, contemporaneous record of who made each operational decision. After-the-fact explanations and reconstructed logs won’t hold up under scrutiny.

Build your documentation system around three principles: real-time capture, lessee sign-off, and easy retrieval. If an examiner asks to see who approved a maintenance deferral three months ago, you should be able to produce that record in minutes, not days.

Pro-Tip: Digital Documentation Best Practices

• Use cloud-based workflow tools (shared spreadsheets, project management platforms, or aviation-specific dispatch software) to capture decisions in real time with automatic timestamps and user attribution.
• Set up role-based access so only lessee-authorized users can approve crew assignments, maintenance actions, and dispatch releases.
• Enable audit logs that track every edit, approval, and communication, creating a defensible chain of custody.
• Schedule automatic weekly backups and store copies offsite or in a separate cloud account to prevent data loss.
• Avoid paper logs that can be lost or altered. If you must use paper, scan and store digital copies daily.

Crew and Personnel Records

The lessee must maintain complete crew records that establish hiring authority, job descriptions, and performance oversight. These records prove the crew works for the lessee, not the lessor.

Required records:

• Hiring decision memo: Dated document stating lessee selected and hired the pilot or cabin crew member, or contracted for services via an independent pilot services provider.
• Job description or scope of work: Defines crew member’s duties, reporting structure, and performance standards set by lessee.
• Rate card or compensation agreement: Shows lessee pays crew directly or compensates the pilot services provider; lessor is not listed as payor.
• Performance reviews or check-ride records: Document lessee’s oversight of crew performance, training completion, and proficiency checks.

Use a consistent format for all crew records. Create a simple template with sections for hiring date, role, compensation, and reporting structure. Have each crew member sign an acknowledgment that they are working under the lessee’s operational control and take direction from the lessee’s designated representative.

Maintenance Decision and Deferral Logs

Daily or pre-flight maintenance logs must show lessee decision-making on every approval, denial, and deferral. This template provides the structure examiners expect to see.

Sample Maintenance Decision Log Template:

Fill this log before each flight or at the end of each maintenance event. The “Approved By” column must list a lessee representative, not a lessor employee or management company technician. If the lessee delegates maintenance authority to a specific person, name that individual and have them sign every entry.

This log doesn’t replace your maintenance tracking system. It creates a parallel record that’s optimized for FAA review: simple, chronological, and lessee-centric.

Dispatch Authority and Flight Release Records

A compliant flight release or dispatch approval captures the essential elements of the lessee’s go/no-go decision. Include these components every time:

• Date and time of approval: Real-time timestamp, not post-flight reconstruction.
• Authorized user: Name and signature of lessee’s PIC or operations manager who made the decision.
• Weather summary: Brief note on conditions (e.g., “VFR at origin and destination, winds 10G15”) showing the lessee obtained and reviewed weather independently.
• Go/no-go decision: Explicit statement (“Flight approved” or “Flight delayed due to weather”) with reasoning if delayed or canceled.
• Aircraft condition: Note on maintenance status (e.g., “All inspections current, no open discrepancies” or “Minor discrepancy deferred under MEL”).

Store these releases in a binder or digital folder organized by date and tail number. Make them accessible to crew so they can reference them during ramp checks or post-flight debriefs.

Passenger Communication and Billing Records

The lessee must be the primary contact with passengers or charter brokers. Communication logs and billing records create evidence of lessee control and independence.

Documentation to maintain:

• Email or text threads: Show the lessee’s scheduler confirming departure times, catering requests, or ground transport with passengers.
• Phone call logs: Note the date, time, and summary of any passenger communication handled by lessee’s ops contact.
• Billing invoices: Show the lessee receiving payment from passengers or reimbursing the lessor for operating costs on a monthly basis, not per-flight.
• Contracts or agreements: If the lessee is providing the aircraft to passengers under a timesharing or cost-sharing arrangement, the contract must list the lessee as the service provider, not the lessor.

If your management company handles passenger-facing communications as a service to the lessee, structure it so the lessee remains the named contact and the management company acts as an agent. Passengers should receive emails from the lessee’s domain or phone number, not the lessor’s or management company’s.

Red-Flag Audit: 10-Point Self-Check

Run this diagnostic checklist internally to spot sham lease exposure before an FAA examination. Each “no” answer is a red flag that needs correction.

1. Does the lessee directly hire and pay all crew, or contract for crew via an independent pilot services provider where the lessee is the client?
2. Are maintenance decisions (approvals, deferrals, vendor selection) documented with lessee sign-off before work is performed or deferred?
3. Do pre-flight dispatch logs show the lessee’s PIC or ops manager obtaining weather briefings and making go/no-go decisions independently?
4. Are passenger communications (scheduling, catering, delays) handled by the lessee’s scheduler or operations contact, not the lessor or management company?
5. Is the lessee billed on a fixed monthly lease rental basis, not per-flight or per-passenger charges?
6. Do crew members understand they take operational direction from the lessee’s authorized representative, not the lessor?
7. Are crew, maintenance, and dispatch records stored in a format that can be produced during an FAA ramp check or inspection within minutes?
8. Does the dry lease agreement clearly state that the lessee has sole operational control and the lessor has no authority over crew, dispatch, or maintenance decisions?
9. Are passengers informed in writing (via email, contract, or briefing) that the lessee is the operator and primary point of contact?
10. Has every crew member, scheduler, and maintenance coordinator signed off on an SOP or training acknowledgment confirming they understand the lessee’s operational control authority?

If you answered “no” to any of these, prioritize fixing that area before your next flight. The more red flags you have, the higher your sham lease exposure becomes.

Structuring Your Dry Lease SOP: From Policy to Daily Practice

An SOP packages the checklists and records into a coherent playbook that crew and dispatch can follow without constant second-guessing. The SOP should be clear enough that a new pilot or scheduler can read it and understand their role in maintaining operational control within one hour.

Your SOP bridges the gap between legal compliance and operational reality. It translates regulatory language into crew-level instructions: who calls the weather briefer, who signs the maintenance deferral, who answers passenger questions, and where to log each decision.

Ownership and Authority Lines in Writing

The SOP must state explicitly who approves crew, who decides maintenance, and who communicates with passengers. Use role-specific language so there’s no ambiguity about who has final say.

Sample SOP language:

• Crew hiring and assignment: “All pilots and cabin crew are hired by [Lessee Name] or contracted via [Pilot Services Provider Name] under a separate agreement. The lessor has no authority to select, assign, or terminate crew. Crew assignments are made by [Lessee’s Operations Manager Name/Title] and documented in the crew assignment log.”
• Maintenance approval: “All maintenance decisions, including approvals, deferrals, and vendor selection, are made by [Lessee’s Maintenance Coordinator Name/Title]. The lessor may provide technical recommendations but has no veto or approval authority over lessee maintenance decisions.”
• Dispatch and flight release: “Go/no-go decisions for each flight are made by the Pilot-in-Command or [Lessee’s Designated Operations Manager Name/Title] based on weather, aircraft condition, crew rest, and operational readiness. The lessor has no authority to approve, delay, or cancel flights.”
• Passenger communication: “All passenger-facing communications regarding flight times, catering, delays, and cancellations are handled by [Lessee’s Scheduler Name/Title]. Passengers are informed that [Lessee Name] is the operator and primary contact. The lessor and any management company personnel shall not communicate directly with passengers on operational matters unless authorized in writing by the lessee.”

This language leaves no room for interpretation. Crew, schedulers, and maintenance coordinators know exactly where their authority begins and ends.

Training and Sign-Off Requirements

All crew, dispatch, and management personnel must sign off on the dry lease SOP and understand their role in maintaining operational control evidence. This sign-off creates a training record that shows the FAA you’ve communicated authority lines clearly.

Require an annual refresher cycle. Operational control understanding degrades over time as crew turnover happens and new vendors or management company personnel join the operation. A yearly sign-off, even if the SOP hasn’t changed, reinforces the lessee’s authority and keeps everyone aligned.

Sample training sign-off statement:

“I have read and understand the [Lessee Name] Dry Lease Standard Operating Procedure dated [Date]. I acknowledge that [Lessee Name] has sole operational control of [Aircraft Tail Number(s)], including authority over crew hiring, maintenance decisions, dispatch, and passenger communications. I understand that my role as [Job Title] requires me to take direction from [Lessee’s Designated Representative Name/Title] and to document all operational decisions in accordance with this SOP. I agree to complete an annual refresher and sign off on this SOP.”

Have every person with an operational role sign this statement and store it with their crew or personnel file. If someone refuses to sign or doesn’t understand the SOP, don’t let them fly or work on the operation until you’ve retrained them.

Documentation Workflow and Approval Chain

Map how daily decisions flow through the SOP and who signs off at each step. This workflow should be simple enough that crew can follow it without constant supervision but detailed enough that it creates a defensible audit trail.

Sample workflow:

1. Crew scheduling: Lessee’s operations manager assigns crew for each flight and logs the assignment in the crew assignment log with date, time, and signature.
2. Pre-flight maintenance review: Pilot-in-Command reviews aircraft status with lessee’s maintenance coordinator. Any open discrepancies are approved for deferral or repair with lessee’s maintenance coordinator signing the maintenance decision log.
3. Weather and dispatch: PIC obtains weather briefing from [Source, e.g., ForeFlight, Flight Service] and logs summary in dispatch log. PIC makes go/no-go decision and signs flight release.
4. Passenger communication: Lessee’s scheduler confirms flight time, catering, and ground transport with passengers via email or phone and saves communication record in passenger communication log.
5. Flight execution: PIC conducts flight under lessee’s operational control. Any in-flight changes (routing, altitude, diversion) are logged in the flight log with PIC signature.
6. Post-flight: Crew debriefs with lessee’s operations manager. Any maintenance discrepancies are reported to lessee’s maintenance coordinator for action.

Each step identifies who has authority and where the decision gets documented. If you use a digital system, configure it so the workflow mirrors this approval chain with role-based permissions.

Common Mistakes That Trigger Examiner Follow-Up

Operational missteps raise sham lease suspicion faster than contract language ever will. These are the patterns examiners see most often when they dig into an operation that looks wrong on the surface.

Lessor paying crew without lessee reimbursement: The lessor’s management company pays pilots and invoices the lessee monthly, but the invoice is a lump sum with no crew cost detail. Examiners see this as lessor-controlled crew payroll, not lessee reimbursement. Fix it by having the lessee pay crew directly or use a transparent pass-through invoice showing individual crew payments.

Lessor approving maintenance vendors: The lessee asks the lessor’s maintenance team to recommend a shop, and the lessor’s team makes the call and schedules the work. Even if the lessee signs off afterward, the lessor made the decision. Fix it by having the lessee’s maintenance coordinator select vendors, approve scope, and schedule work, with the lessor providing technical input only upon lessee request.

Lessee rubber-stamping lessor decisions: The lessor’s operations team decides flight times, routes, or cancellations and sends the lessee a form to sign. The lessee signs without independent review. Examiners see this as lessor control with lessee performing ministerial sign-off. Fix it by requiring the lessee to make decisions first and document them before the lessor or management company executes.

Management company communicating with passengers directly: Passengers receive departure confirmations, delay notices, or catering updates from the management company’s email address, not the lessee’s. Examiners and passengers assume the management company is the operator. Fix it by routing all passenger communications through the lessee’s scheduler or ops contact, with the management company acting as a behind-the-scenes support resource only.

Mixed billing models: The lessee is charged a monthly base rent plus hourly rates that vary by flight or passenger load. This looks like charter revenue, not lease rental. Fix it by using a flat monthly lease rental and having the lessee cover all operating costs separately through direct vendor payments or transparent reimbursement invoices.

These mistakes often start small and grow over time as operational shortcuts accumulate. The earlier you catch and correct them, the lower your enforcement risk becomes.

If you’re managing Part 91 operations and struggling to maintain clear operational control documentation across multiple dry leases, WingLeader provides back-office compliance support tailored to smaller fleets. We help operators in Florida, Texas, and across the USA build defensible workflows without the overhead of a full-service management company.

Moving Forward: Building Defensible Dry Lease Operations

Building a defensible dry lease operation isn’t a one-time contract review. It’s an ongoing discipline of verifying authority, documenting decisions, and training crew to understand their role in maintaining operational control.

Implementation roadmap:

1. Audit current structure against the five dimensions: Review crew hiring, dispatch decision-making, maintenance control, passenger communication, and billing to identify where lessor control may be creeping in.
2. Build documentation templates: Create simple, standardized forms for crew assignment logs, maintenance decision logs, dispatch releases, and passenger communication records. Make them easy to use so crew will actually fill them out.
3. Train crew and operations staff: Hold a briefing session with all crew, schedulers, and maintenance coordinators to explain the SOP, walk through the documentation workflow, and have everyone sign the training acknowledgment.
4. Establish weekly or monthly compliance review cycles: Designate a lessee representative to review logs, check that sign-offs are complete, and spot any authority drift. Schedule these reviews on a recurring calendar so they don’t get skipped.
5. Test your documentation during internal audits: Run a mock FAA inspection where you ask your team to produce crew records, maintenance logs, and dispatch releases for the last 90 days within 15 minutes. If they can’t do it, your system needs work.

This roadmap isn’t a burden. It’s a risk management investment that protects the lessee, the lessor, and everyone involved in the operation. The cost of building these systems is measured in hours and training time. The cost of a sham lease enforcement action is measured in fines, certificate suspensions, and legal fees that can reach six or seven figures.

Start with the pre-flight authority verification checklist and the 10-point red-flag audit. Those two tools will show you where your operation stands and what needs immediate attention. From there, build out your SOP, train your team, and establish the documentation workflow that makes operational control evidence automatic rather than an afterthought.

Dry lease operations can be compliant, efficient, and straightforward when you structure them around clear authority lines and defensible documentation. The key is treating operational control as a daily practice, not a legal concept.

Frequently Asked Questions

What is a sham dry lease and how does the FAA identify it?

A sham dry lease is an arrangement that’s labeled “dry lease” but actually functions as commercial charter or a wet lease. The FAA identifies sham leases by looking past contract language to operational reality: who hires and pays crew, who makes dispatch and maintenance decisions, and who passengers believe is operating the flight. If the lessor or management company controls these dimensions, the FAA treats it as a wet lease or illegal charter regardless of how the contract is titled.

Who must have operational control in a compliant dry lease under Part 91?

In a compliant dry lease, the lessee must have sole operational control. That means the lessee hires crew, makes dispatch decisions, controls maintenance scheduling and approvals, and communicates with passengers. The lessor provides only the airframe and has no authority to approve, veto, or override the lessee’s operational decisions. This allocation is tested across crew hiring, dispatch, maintenance, passenger communication, and billing structure.

How do I document operational control for FAA inspections?

Document operational control by maintaining real-time logs of crew assignments, maintenance decisions, dispatch releases, and passenger communications, all signed by the lessee’s authorized representative. Use simple templates that capture who made the decision, when, and based on what criteria. Store these logs in an easily retrievable format so you can produce them during a ramp check or inspection within minutes. Digital systems with audit trails and role-based permissions provide the strongest evidence.

Can a management company provide pilots to a dry lease lessee without creating a sham lease?

Yes, but only if the lessee contracts for pilot services independently and the lessor is not a party to that arrangement. The management company must act as the lessee’s agent, not the lessor’s, and all employment or contractor agreements must list the lessee as the client. Crew must understand they take direction from the lessee’s authorized representative, and payroll records must show the lessee as the payor, not the lessor or management company.

What are the most common mistakes that trigger FAA sham lease investigations?

Common mistakes include lessor paying crew without transparent lessee reimbursement, lessor approving maintenance vendors or decisions, lessee rubber-stamping lessor operational calls, management company communicating directly with passengers, and billing structures that charge per-flight or per-passenger instead of flat monthly lease rental. Each of these patterns signals to examiners that the lessor, not the lessee, is running the operation.

How often should I review my dry lease documentation and compliance?

Review your documentation on a weekly or monthly basis to catch authority drift early. Designate a lessee representative to check that crew assignment logs, maintenance decision logs, and dispatch releases are complete and signed. Conduct a full internal audit quarterly, testing your ability to produce all required records for the prior 90 days within 15 minutes. Annual SOP refresher training and crew sign-offs keep everyone aligned on operational control authority.

What should a pilot do during an FAA ramp check to prove operational control?

During a ramp check, the pilot should be able to state clearly that they are working for the lessee, explain how they were hired or contracted, and produce the crew assignment log, dispatch release, and maintenance decision log showing lessee sign-off. The pilot should direct the examiner to the lessee’s designated operations manager for any questions about authority or decision-making. Pilots who can’t identify who they work for or who made the dispatch decision raise immediate red flags.

Do I need to file a Truth-in-Leasing notice for every dry lease?

You must file a Truth-in-Leasing notice with the FAA under FAR 91.23 if the aircraft is over 12,500 pounds maximum certificated takeoff weight. The notice must be filed within 24 hours of execution and the local FSDO notified at least 48 hours before the first flight under the lease. A copy of the lease must be carried on board the aircraft. Smaller aircraft aren’t subject to Truth-in-Leasing filing requirements, but maintaining clear operational control documentation is still critical for avoiding sham lease exposure.

Ready to build a defensible dry lease operation with clear authority lines and audit-ready documentation? Contact WingLeader to get compliance support tailored to your Part 91 fleet without the overhead of full-service management.