Experimental Aircraft Insurance: Read the Policy, Test Phase and Lender Terms

Start with the aircraft, the operation and the actual policy

Insurance for an experimental or high-performance aircraft needs a review of the specific aircraft, pilots, activities and contract. Experimental certification and high-performance operation describe different things. Identify the aircraft's actual certificate and configuration instead of assuming that speed, retractable landing gear or an expensive panel makes it experimental. A policy suitable for one owner or aircraft may leave important gaps for another.

Begin before signing a purchase contract or scheduling a first flight. Tell the insurer whether the aircraft is an unfinished project, newly certificated and being tested, an established flying homebuilt or a certificated aircraft undergoing modification. Explain who owns it, who will fly, where it will be kept and what activities are intended. Then request the proposed declarations or data page, policy form and every applicable endorsement.

This guide uses specifically identified public insurer wording to illustrate questions worth asking. It does not determine anyone's coverage. Avemco's posted Direct Approach form POL0001 is dated August 1, 2016; a buyer's issued terms, endorsements, jurisdiction and facts may differ. Read the complete package and obtain written answers about the proposed aircraft rather than assuming a website summary binds coverage. Avemco posted owned-aircraft policy wording

Distinguish legal permission from insurance permission

An airworthiness certificate, pilot qualification and insurance policy serve different purposes. An aircraft can satisfy a regulatory condition while a proposed operation remains outside its insurance. Conversely, a discussion with an insurer does not authorize flight contrary to FAA rules or operating limitations. Align the technical and insurance decisions instead of using either as a substitute for the other.

Current 14 CFR 91.319 requires experimental operations to fit the certificate's purpose and applicable restrictions, including the aircraft's issued operating limitations. Test-area release depends on demonstrated controllability and absence of hazardous characteristics. Determine the candidate's actual testing status, authorized occupants and operating conditions; do not infer a universal test duration or passenger entitlement from another homebuilt's records. 14 CFR 91.319 — Experimental operating limitations

The FAA's high-performance training rule in section 61.31 concerns an airplane with an engine of more than 200 horsepower. Other qualifications, endorsements or limitations may apply independently. A legal endorsement does not establish compliance with an insurer's approved-pilot, training or use conditions. Describe the actual aircraft and pilot privileges when requesting terms. 14 CFR 61.31 — High-performance pilot training

Obtain a stage-specific coverage plan

Construction, ground testing, initial flight testing and ordinary operation are different stages. Make a schedule showing when each starts, what changes in the aircraft and which insurance document will apply. Confirm coverage for components stored at separate locations, transport, assembly, engine runs, taxi testing and first flight rather than treating completion as one automatic coverage event.

Avemco's publicly posted construction endorsement NC-108001 excludes aircraft in motion and identifies a final-inspection transition after which a different policy must be issued. That example demonstrates why construction coverage must be checked before taxi testing or certification. It is not a description of every builder's policy or a promise that replacement coverage will be available. Avemco aircraft under construction endorsement

Ask who must notify the insurer of a change in stage, what documents it requires and when any amended coverage becomes effective. Coordinate that process with the inspection, test-pilot and training arrangements. A request for a change, a quoted premium or a sent email should not be assumed to supply the requested protection before written confirmation.

If a project is delayed, keep its insured description and value accurate. Components may arrive at different times and be stored away from the main airframe. Record their purchase, location and ownership. Ask about tools, borrowed equipment, transit, theft and damage caused by workmanship. A total project-cost spreadsheet does not show which items the policy actually insures.

Match ownership and participating people to the documents

Check the legal owner against the named insured and aircraft description. If an individual buys through an entity, or ownership changes after an initial quote, ask the insurer to confirm the correct arrangement before closing. The person arranging the policy, the registered owner, the borrower and the person flying can be different. Merely sending an entity's name to a provider does not establish that all of its interests or activities have been accepted.

For co-ownership, describe the owners, their financial interests, the aircraft's use and every proposed pilot. Ask how a claim by one owner against another would be treated and whether the policy responds differently when an owner acts as an instructor or maintenance provider. A shared-cost agreement should not be assumed to fit the policy's permitted-use definition without review.

Apply the same discipline when someone borrows the aircraft. Permission to fly and satisfaction of a pilot clause do not answer every liability or recovery question. Ask who receives a defense, whether damage to the aircraft is covered, and whether the insurer can seek recovery from the pilot or another party. Obtain any needed endorsements rather than relying on a friendship or an informal understanding about who will pay.

Keep the resulting ownership and use description consistent across the purchase, loan, insurance and operating documents. If those arrangements change, identify which parties must approve the change and which documents must be amended. A change that appears administrative can affect more than the mailing address on a renewal notice.

Read the initial-flight endorsements carefully

Avemco's posted amateur-built endorsement NC-102701 excludes occupant bodily injury during Phase I. Its separate hull exclusion requires 10 flown hours and 10 successful takeoffs and full-stop landings following initial certification or a modification requiring FAA recertification before purchased in-flight hull protection applies. These are conditions in that posted insurance wording, not FAA flight-test completion rules. Someone permitted aboard by the FAA may still fall within a policy exclusion. Avemco amateur-built aircraft endorsement

For the actual proposed test program, ask separately about physical damage to the aircraft, injury to the owner-pilot, injury to a contracted test pilot and liability to people outside the aircraft. Identify who is an insured person, who is an approved pilot and who is merely named for another purpose. Those statuses should not be treated as interchangeable.

After a modification, review both the FAA-issued limitations and the policy before the next flight. The insurer may need the new configuration, value, pilot preparation or testing plan. A transition to later operating privileges does not prove that an endorsement has been removed or that coverage has expanded automatically.

Build an accurate aircraft submission

Provide the make, model, serial number, registration, certificate, operating limitations and present testing status. Describe the actual engine and propeller, their installation history and any changes from the kit or plans. Identify the avionics, installed safety equipment, landing-gear configuration and current weight-and-balance documentation. A generic model name can conceal substantial differences between individual homebuilts.

Avemco's posted amateur-built information form asks about modifications, engine and propeller configuration, condition-inspection date, testing stage and aircraft and pilot experience. That is one insurer's information request, not a guarantee that completing it produces coverage or better pricing. It shows why a precise submission is more useful than describing the aircraft only as a familiar kit type. Avemco amateur-built experimental aircraft information form

For a newly completed aircraft, retain the builder's log, photographs, material and component receipts, inspection records and certification documents. For a purchase from another builder, obtain enough of that history to explain the actual aircraft. An independent inspection can help identify missing information or unresolved condition questions; it is not an insurer's acceptance of every risk.

Disclose significant repairs, damage, unfinished work and planned changes accurately. Describe uncertainty as uncertainty. If the application requests information you cannot verify, ask how to document that limitation rather than selecting an answer that implies certainty. Keep a copy of what was submitted and of any later corrections.

Prepare the pilot and training information

Describe certificates, ratings, relevant endorsements, flight review and applicable medical eligibility accurately. Separate total flight time from time in the actual model, similar aircraft, tailwheel aircraft, retractable-gear aircraft or other relevant configurations. Provide the experience breakdown requested by the insurer rather than assuming airline or general aviation hours receive identical treatment.

Explain the transition plan before relying on a proposed delivery flight. Identify the instructor or test pilot, their aircraft experience, the aircraft to be used for training and the point at which the owner expects to fly alone. Ask whether approval is tied to a named instructor, a written syllabus, a specified checkout or another condition. Obtain the condition and evidence of completion in writing.

For instruction in an experimental aircraft, current section 91.326 distinguishes operations requiring deviation authority from specified exceptions. Whether the instructor supplies both aircraft and training, advertising and compensation arrangements can matter. Establish the legal arrangement with qualified parties, then separately confirm insurance for it. Paying an instructor is not by itself proof that every proposed instructional arrangement is permitted or insured. 14 CFR 91.326 — Specified experimental training operations

An instrument rating, recurrent course or additional model experience can be relevant information without guaranteeing an insurance discount or acceptance. Ask the underwriter which conditions apply to this proposal. Avoid choosing a course solely because an unrelated owner reported a premium reduction; choose training that addresses the aircraft, mission and your actual proficiency needs.

If another pilot will occasionally fly, request the applicable approval before the flight. Read any open-pilot clause carefully, including recency and experience conditions. Meeting such a clause may permit a pilot's operation under specified coverage without giving that pilot every protection of a named insured. Ask about the pilot's own exposure and any separate coverage they may need.

Separate hull, liability and medical-expense protection

Physical-damage coverage concerns the insured aircraft. Liability coverage addresses covered legal responsibility to others. Medical-expense coverage, if purchased and applicable, has its own terms and limits. A large number shown for one coverage does not establish the same amount or scope under another.

Ask whether liability includes occupants and which per-person or passenger limits apply. Check how injury to the policyholder, family members, employees, instructors and other pilots is treated. Do not assume that all passengers are excluded from ordinary liability, or that all occupants receive the full accident limit. Identify both the people and the claims to which each provision applies.

Review the defense provisions as well as indemnity limits. Ask whether defense costs reduce the available limit, what happens when the insurer tenders its limit, and who controls settlement. Medical-expense coverage should be examined separately for eligible persons, covered expenses and time conditions. It is not a substitute for adequate liability analysis or a promise to cover every injury.

Understand the flight and ground definitions

Avemco's posted form defines in-flight and in-motion periods differently: takeoff movement starts its flight definition, while engine-powered movement falls within its motion definition, with additional aircraft-specific provisions. That wording illustrates why engine start, taxi, towing and flight should be checked individually. The label ground coverage alone is insufficient to decide an event. Avemco posted owned-aircraft policy wording

For your policy, ask about a stationary engine run, taxi under power, movement by tug, a tiedown failure, hangar damage and damage during transport. Identify whether different deductibles or exclusions apply. A coverage reduction intended for storage may remove protection needed during maintenance or ground testing. Agree on the actual permitted activities before changing the policy.

Keep geography and use in the same review. Confirm the territory, delivery route, storage location, aerobatics, racing, exhibitions, shared ownership, rental and any business use. A policy's commercial-purpose definition and its exceptions need their own reading; an FAA permission or an owner's tax classification does not amend that definition.

Establish value and settlement terms before a loss

Ask how the insured value is established and how the contract settles partial damage and a total loss. Terms such as agreed value, stated amount and actual cash value should be read in the actual wording. A number on a quote can be a limit without establishing that every covered event pays that number. Identify deductibles, prior-damage adjustments and any repair or replacement provisions.

For a homebuilt, support the requested value with condition, equipment, records and appropriate valuation evidence. Receipts, personal labor and emotional attachment do not necessarily equal an achievable sale price or an insurer's accepted value. Update the request after material additions, but do not assume newly installed equipment is fully covered before the contract says so.

Ask what happens to salvage and surviving components. Do not count the full insured payment and the retained value of an engine or panel unless the settlement actually permits both. Ask how repair labor, transport, storage and parts are handled, including the circumstances in which the owner may perform repairs. Downtime, loss of use and lost business income require separate review rather than an assumption that hull coverage includes them.

Breakdown and resulting damage also need careful distinction. Ask the insurer to explain how the policy would treat a failed component alone and a separate accident resulting from that failure. Coverage for an accident does not turn ordinary maintenance, wear or an overdue replacement into an insured expense. Use the actual exclusion and any ensuing-loss language, not the phrase all risk in isolation.

A fictional deductible comparison

Consider two wholly invented proposals with otherwise identical applicable coverage. Proposal A has a $3,200 annual premium and a $1,500 deductible for the modeled partial loss. Proposal B has a $2,700 annual premium and a $5,000 deductible for that same loss. These are not quotes, typical premiums or a claim that those terms are available for any aircraft.

The premium difference is $500 annually, while the additional deductible retained by the owner is $3,500. Dividing the additional retention by the annual premium difference gives seven claim-free years in this simplified comparison. It is not an actuarial prediction, a recommendation to select either proposal or an instruction to withhold notice of an event.

Assume a covered $18,000 repair with no other adjustment. The modeled insurance payments would be $16,500 under A and $13,000 under B. Including the annual premium and the owner's deductible, that year's modeled owner cash cost is $4,700 under A versus $7,700 under B, a difference of $3,000. Real settlements depend on the actual loss, contract, deductible triggers and other applicable provisions.

The useful decision is whether the owner can fund the retained amount while preserving maintenance and operating liquidity. Compare coverage differences before comparing premium. A proposal with narrower approved use or a lower liability sublimit is not made equivalent by adjusting only a deductible. Keep the premium in the annual budget once, even if it is paid at the acquisition closing.

Keep a separate plan for costs that the proposed protection does not fund. A deductible reserve, scheduled maintenance allocation, replacement transportation and loan payments during downtime answer different needs. Identify any overlap before adding them together. Money reserved for a deductible cannot simultaneously be treated as freely available cash for a known maintenance invoice. An insurance settlement also should not be counted as immediate cash before coverage, amount and payment arrangements have been established.

Check liability sublimits using a separate example

Assume a fictional liability contract has a $1,000,000 accident limit but limits covered bodily injury to one passenger to $100,000. For an assumed covered $350,000 passenger claim, the passenger sublimit leaves $250,000 outside that modeled indemnity payment. The unused portion of the accident limit does not automatically override the sublimit.

This example assumes liability and coverage for the claim, with no other applicable adjustment, and does not estimate the value of an actual injury. Defense, related claims and other occupants could affect the analysis under a real contract. Ask how per-person, passenger, family, employee and aggregate provisions interact rather than relying on a headline liability number.

Consider your intended occupants and operations with qualified insurance and legal advisers. An owner carrying family, employees or a contracted test pilot can have different questions from an owner flying alone. A signed passenger document does not itself establish an insurance benefit or replace compliance with the aircraft's operating limitations.

Coordinate lender interests without confusing their roles

Review the loan's actual insurance conditions before accepting it. Ask which hull and liability coverages, values, deductibles, pilots, uses and lender endorsements it requires, and whether the offered policy can meet them. There is no universal rule that insurance equal to the principal balance satisfies every loan agreement or adequately protects the owner's investment.

Loss-payee status concerns payment rights; additional-insured status concerns liability protection within its wording. Other lender endorsements can create different rights and conditions. Ask for the exact documents and confirm the lender's acceptance. Naming a financing company somewhere on an application is not a substitute for the required issued endorsement.

For a separate fictional total-loss example, assume a contract pays $150,000 for the covered total loss with no deductible or other adjustment, and an agreed lender payoff is $110,000. The amount remaining after that payoff is $40,000. If the assumed payment were instead $100,000, the payoff shortfall would be $10,000. Neither scenario states what a real policy pays or what a lender will release.

Obtain an actual payoff for the relevant date, including any contractual interest or charges. Resolve payment instructions and lien-release arrangements with the insurer and lender. Do not assume physical loss erases the debt, or that an insurer will pay the owner alone. The insurance and financing guide helps organize that part of the acquisition discussion.

Confirm the inspection and maintenance arrangements

Keep the current condition-inspection record, maintenance history, installed configuration and operating limitations available. Distinguish who may perform maintenance from who may sign the required condition inspection. Neither buying the aircraft nor building it automatically issues a repairman certificate.

Section 65.104 provides a builder-specific repairman route subject to its eligibility conditions. Current section 65.109 separately allows a light-sport repairman with an inspection rating to inspect specified owned experimental aircraft when the category and applicable class match the required training; maintenance-rating privileges and conditions differ. The actual aircraft's operating limitations must also permit the arrangement. Confirm the qualification and authority for this aircraft rather than requiring an A&P with inspection authorization in every case. 14 CFR 65.104 — Experimental builder repairman 14 CFR 65.109 — Light-sport repairman privileges and limits

Tell the insurer accurately who will do the work and supply requested records. Have appropriate professionals assess unfamiliar tasks and significant modifications. The owner-maintenance legalities guide can help frame questions about task authority. An insurance condition may impose a separate requirement even when a different arrangement is legally available.

Follow the actual notice and claims duties

Read the required notice, cooperation, preservation and inspection provisions before a loss. Avemco's posted form requires prompt notice and other duties, including insurer inspection before repair or disposal. Its public claims page lists supporting aircraft and pilot documents. Those are examples of why an owner should obtain instructions promptly rather than delay notice while speculating about renewal premiums. Avemco posted owned-aircraft policy wording Avemco public claim-reporting instructions

After an event, attend to immediate safety and required emergency reporting, protect people and the aircraft, and follow the applicable insurer and regulatory instructions. Preserve photographs, records, witness information and damaged components as appropriate. Ask before authorizing nonemergency repairs, disposal, admissions or settlements that could affect the insurer's rights.

Whether the owner ultimately pursues payment for a small loss is a separate question from duties to notify or cooperate. Do not assume a loss below the deductible has no reporting requirement or that a private repair leaves the policy unchanged. Obtain written guidance about the actual event and contract; there is no guaranteed premium or renewal outcome from either filing or declining a claim.

Ask about recovery rights before agreeing to release another party. A waiver of subrogation, additional insured or contractual indemnity can change exposures, but it applies only as actually agreed and issued. A hangar or maintenance contract can create obligations different from the aircraft policy. Have the parties reconcile those documents before relying on a broad assurance that someone else is insured.

Review changes and renewal deliberately

Keep a current submission file with pilot experience, training, inspections, modifications, location, value and use. Before renewal, compare the proposed terms with the expiring policy, including changed pilots, exclusions, deductibles, sublimits and endorsements. A familiar insurer name or a similar premium does not establish identical coverage.

Ask for renewal timing and any remaining information early enough to arrange alternatives. Continuing with one insurer may suit an owner, but loyalty does not guarantee renewal, unchanged premiums or claim treatment. A new provider's lower premium also requires a complete comparison and confirmation that coverage starts without an unintended gap.

For a purchase, place those steps alongside inspection, training, lender approval and delivery in the aircraft purchase timeline. For an experimental acquisition, the experimental financing guide helps separate aircraft-stage documentation from credit and insurance decisions. Read the proposed terms before making a commitment that depends on them.

Discuss the documented aircraft and financing plan with a clear description of the intended ownership. Suitable insurance planning means understanding what is actually covered, what remains with the owner and when each obligation begins; it does not promise a particular insurer, premium or outcome.