Keep required work and inspection entries, continuing-status records and supporting evidence organized by the installed equipment. Retention and sale-transfer rules differ by record category.
What aircraft records does an owner need?
For a U.S. aircraft subject to the rules discussed here, organize maintenance records around the equipment, work, inspection status and continuing obligations they document. A row saying “annual done” is not a complete records system. Neither is a folder of invoices without the required signed entries. The starting point is 14 CFR 91.417: records, retention and sale transfer, which separates ordinary work records from specified continuing-status records and gives them different retention requirements.
This guide focuses on an owner's custody and purchase handoff for a typical type-certificated general aviation aircraft. Different operating and certification programs can impose additional requirements. Your maintenance professional should identify the actual program before you build a checklist. The owner or operator remains primarily responsible for airworthiness under 14 CFR 91.403: owner responsibility and limitations; hiring a shop does not turn an incomplete personal spreadsheet into an approved maintenance record.
Separate three kinds of evidence
First, keep the records of maintenance, preventive maintenance, alterations and required or approved inspections. Section 91.417 identifies information such as work descriptions, completion dates and the signature and certificate number of the person approving return to service. The detailed entry requirements also depend on the work. 14 CFR 43.9: ordinary maintenance entries addresses ordinary maintenance entries, while 14 CFR 43.11: inspection entries and discrepancies addresses inspection approvals or disapprovals. An invoice can explain a charge without meeting either entry requirement.
Second, maintain the continuing-status information specified in section 91.417(a)(2). This includes total time in service for the airframe, engines, propellers and rotors; life-limited-part status; specified overhaul information; current inspection status; applicable AD status; and the prescribed major-alteration forms for currently installed equipment. These are not interchangeable categories. An engine overhaul entry does not establish the status of every accessory or the airframe's inspection program.
Third, preserve supporting material that helps a qualified reviewer connect the first two groups: detailed work orders, component releases, alteration approvals, drawings, equipment changes and correspondence resolving discrepancies. Some supporting documents have their own requirements. Others provide useful history beyond a minimum retention period. Label their role rather than telling a buyer that every receipt is legally required forever.
Build a custody matrix instead of one undifferentiated folder
| Record group | What to connect | Owner's handoff check |
|---|---|---|
| Ordinary work | Equipment identity, description, completion date and required approval entry | Match the shop package to the correct aircraft or component history |
| Inspection | Inspection type, extent, date, aircraft total time and approval or discrepancy outcome | Distinguish a signed approval from a bill or appointment confirmation |
| Continuing status | Times, life limits, inspection status, AD methods and recurring next actions | Confirm the status is current as of a stated date and time |
| Alterations | Applicable forms and supporting installation or approval information | Reconcile the records with equipment actually installed |
| Open discrepancies | Signed list, subsequent repair entries and return-to-service disposition | Keep the issue open until its documented disposition is established |
Use a custodian, location and backup field for each group. If the engine shop holds a logbook during overhaul, record when it left, who received it and how it will return. This simple chain of custody prevents the familiar situation in which everyone assumes another party has the only original. It is an organizational method, not an FAA-prescribed form or substitute for the underlying records.
Understand retention before discarding anything
Under 14 CFR 91.417: records, retention and sale transfer, paragraph (a)(1) records have the retention provision in paragraph (b)(1): until work is repeated or superseded, or for one year after performance. The paragraph (a)(2) records must be retained and transferred with the aircraft at sale. A discrepancy list furnished under section 43.11 must remain until the defects are repaired and the aircraft is approved for return to service. Do not apply one retention slogan to every document.
There are exceptions and related rules. FAA AC 43-9D: maintenance record guidance explains the treatment of work under sections 91.411 and 91.413, whose test intervals do not fit a simple one-year rule. Before destroying an older record, ask the reviewer which category it supports and whether another operational, contractual or legal requirement applies. A minimum retention provision is not a recommendation to erase useful maintenance history.
Longer voluntary retention can make a later review easier, especially for structural repairs or changes of components. Preserve the historical entry and link a later correction or superseding event rather than silently replacing the earlier file. A sale package should tell a coherent story about what happened and what is now installed, without suggesting that a continuous binder alone proves every action was properly performed.
Check identity, time and continuity together
Start with the aircraft registration and serial number, then identify each installed engine and propeller by model and serial number. Trace removals, replacements and returns to service. A beautifully scanned engine book for a previously installed engine does not establish the current engine's history. Keep displaced-component records identified so a reviewer can understand the transition without confusing their totals.
Next, reconcile time bases. The FAA's AC 43-9D explains that recording tachometers and similar devices help determine time in service but do not replace the required maintenance record. An instrument change needs a continuity record. If an old meter read 2,350 and a replacement began at zero, a later reading of 210 cannot simply be presented as 210 total airframe hours. Have the mechanic establish the documented relationship; do not manufacture a missing total from arithmetic alone.
Review chronology for gaps, inconsistent identifiers, unsigned pages and unexplained resets. List questions neutrally: “installation entry not located” is more accurate than “illegal installation” before the professional review is finished. Likewise, “no damage entry found in supplied records” does not prove no damage ever occurred. Our logbook review guide develops the purchase investigation beyond this custody checklist.
Keep digital records usable and complete
AC 43-9D allows a format that preserves continuity, required content, signature entry, legibility and the ability to add entries. It also warns that a scheduling system may not satisfy the recordkeeping requirements. A reminder saying “AD due soon” is useful, but it needs the actual applicability, compliance and record evidence behind it. A digital dashboard with missing signatures is not complete merely because it is searchable.
For scans, check every page, reverse side and attachment. Confirm that small print and signatures remain readable when opened outside the scanning application. Name files consistently, preserve an unedited copy and test restoration from a separate backup. Restrict access to personal contact details and financial paperwork that need not travel with the maintenance package. These are practical controls; they do not certify a particular electronic-signature platform or authorize disposal of originals.
Before adopting a digital-only process, agree on how an authorized person makes entries, how corrections remain traceable, how required records can be produced for inspection and how a future owner receives an accessible export. Test the export before the sale. An account subscription that expires on closing day can make an otherwise organized handoff unexpectedly difficult.
Handle missing records as a project with unresolved items
The FAA's FAA AC 43-9D: maintenance record guidance discusses reconstructing lost records through repair facilities, individual mechanics and other evidence. It describes the difficulty of reestablishing AD status, life-limited-part status, overhaul information and inspection history. Some work may need to be performed again. Reconstruction is not permission to backdate a signature or present an estimate as an original contemporaneous entry.
Create a missing-record register with the absent period or component, sources contacted, evidence received, remaining uncertainty and professional disposition. Separate verified facts from estimates. Obtain the mechanic's technical plan and the buyer's contractual decision before assuming an attractive price compensates for every gap. Do not promise a fixed discount, a guaranteed lender acceptance or an insurance outcome for incomplete records.
Transfer records through a defined purchase handoff
Before closing, reconcile a dated inventory with the purchase agreement. Identify physical books, digital exports, continuing-status summaries and unresolved items. Arrange custody during the inspection, escrow period and delivery flight so the parties know who can access required information. The statutory transfer requirement for specified records does not answer every logistical or contractual question about all historical material.
At delivery, record receipt against the inventory, preserve the final copies and confirm the status as of the actual delivery time. If the aircraft flies after the pre-buy, update the relevant times and next actions. Give the new shop a readable package rather than assuming access automatically follows the registration change. Pair this work with the pre-buy checklist and AD compliance guide.
Records questions
What if logbooks are missing?
Identify exactly what is missing and have qualified maintenance personnel assess reconstruction and compliance evidence. FAA guidance recognizes that this can require substantial research, inspection or repeated work. Keep estimates and unresolved gaps explicit; a replacement binder does not recreate an original history or guarantee financing.
Do records transfer with the aircraft?
Section 91.417(b)(2) requires the specified continuing-status records to be retained and transferred at sale. Define the broader historical and supporting package in the purchase agreement and delivery inventory, including digital access. Do not reduce every retention and transfer category to one blanket rule.
Who makes logbook entries?
The applicable rules assign entry and approval responsibilities to the person performing or approving the relevant work or inspection. Authority depends on the task and certificate privileges. Owners remain responsible for keeping required records and ensuring the package is complete; organizing files does not authorize a maintenance approval signature.