Pre-buy diligence
Business-jet pre-purchase records checklist
This checklist prepares the records side of a business-jet pre-buy, covering logbook continuity, damage and major-repair history, engine and airframe program enrollment, and AD status. Work it alongside the physical pre-purchase inspection so paper findings and survey findings are reconciled. You finish with a continuity assessment, a damage-history summary, and a records discrepancy list tied to the purchase agreement.
When this review is needed
- A business jet is under offer and the pre-buy inspection is being scheduled.
- The buyer wants the logbook continuity and damage history read before the survey starts.
- Engine and airframe program enrollment is part of the value and needs confirming.
- A cabin or avionics completion is part of the airframe history and its approval basis has to be checked.
The problem
On a business jet the value sits in places a status list does not show. Program enrollment can be worth a large share of the asset and may not transfer on sale. A cabin or avionics completion can carry a six-figure paper trail that is missing its approval basis. A logbook can run clean until an ownership change, then skip a stretch. The pre-buy inspection finds metal problems; none of these is a metal problem.
What gets reviewed
- Continuity of airframe, engine, and APU logbooks from delivery forward
- Damage, major-repair, and corrosion history with substantiation
- Engine and airframe maintenance program enrollment and coverage
- AD and SB status for the type and any installed completions or mods
- Avionics and cabin modification records with approved data
- Whether each enrollment and approval transfers to the buyer on sale
Scope this review
Tell us the asset, the event, and the evidence in scope, and we will outline a focused first engagement.
Send a representative, redacted record set and we will scope the review.
What gets validated
- Logbook entries run continuously with no unexplained date or time gaps
- Each major repair shows its approved or acceptable data and the return-to-service entry
- Program enrollment is confirmed as current and transferable to the buyer
- Modification and completion records carry the approval behind them
- Damage history is reconciled against the structural repairs actually recorded
Evidence normally required
Common discrepancies
- A logbook gap across an ownership change with no bridging documentation
- A repair referenced in maintenance with the approved data missing
- Lapsed program enrollment, or enrollment that does not transfer on sale
- A cabin or avionics completion with no record of the approval basis
- A damage entry with no matching structural repair recorded against it
What is at stake
Buying into a lapsed or non-transferable program, or a completion with no approval behind it, lands on the buyer after closing when the broker has moved on. Reading the records before the survey lets the buyer price these items into the agreement while the deal is still open.
How the work runs
Read continuity first
Walk airframe, engine, and APU logbooks from delivery forward and flag any unexplained gap, especially across ownership changes.
Reconcile damage and repairs
Match each damage and major-repair entry to its substantiation and the structural repair actually recorded.
Check the value items
Confirm program enrollment standing and transferability, and the approval basis behind each completion.
Tie findings to the agreement
Cross-reference the discrepancy list to the purchase agreement so each item has a commercial position.
What the buyer receives
- A logbook continuity assessment by airframe, engine, and APU
- A damage and major-repair history summary with substantiation status
- A records discrepancy list cross-referenced to the purchase agreement
Who uses the output
- Owner representatives and buyers deciding whether to proceed
- Brokers and acquisition leads reconciling paper findings with the survey
- Records teams building the post-closing remediation list
How the work fits into the transaction or program
The checklist runs alongside the physical pre-buy so paper and survey findings reconcile into one position. It feeds the broader acquisition diligence where the buyer is a fleet operator rather than an individual owner.
Aircraft-specific considerations
Business jets carry enrolled engine and airframe maintenance programs that can be worth a substantial share of the asset, and many cabin and avionics completions are installed under their own approvals, so program transfer and completion approval basis are checked as distinct value items.
Regulatory limits
The checklist confirms continuity, substantiation, and transferability of the records. It does not certify the aircraft, make an airworthiness determination, or replace the physical pre-purchase inspection.
What this review does not cover
- The physical pre-purchase inspection and any test flight
- Valuation of the aircraft or its programs
- Any airworthiness determination or regulatory approval
Specific to this review
- A records review and the physical pre-buy inspection are complementary; a clean survey does not close a paper gap, and a clean paper trail does not replace the survey.
- Program enrollment can carry real value and is checked for both current standing and whether it transfers to the buyer on sale.
- Cabin and avionics completions are checked for an approval basis, because a high-value interior with no recorded approval is a paper liability rather than an asset.
Sources
U.S. Government (eCFR). Maintenance recordkeeping content and approval-for-return-to-service requirements, including 43.9, 43.11, and Appendix B.
U.S. Government (eCFR). Records an owner or operator must keep, including total time in service, current status of life-limited parts, and AD compliance.
U.S. Government (eCFR). Maintenance recordkeeping and retention requirements for Part 135 operators.
Frequently asked questions
Why check program transferability and not just enrollment?
Enrollment that is current can still fail to transfer to a new owner on sale. Both are checked, because a program that lapses or resets at closing changes what the buyer is actually acquiring.
Relevant glossary terms
Related pages
Where this fits
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We will walk through your current state, the records or evidence involved, and a scoped first engagement.
Adapt the checklist to your asset, event, and jurisdiction.