An imported Cessna with gaps, pencil and an over-written date

Maintenance records must be permanent, legible and attributable. Entries are made in ink (or in an approved electronic system with an audit trail), signed, dated, and describe the work done with reference to the approved data used. Corrections are made by drawing a single line through the incorrect entry so it remains readable, then writing the correct information, initialling and dating the correction, and where relevant stating why. Writing over a figure or using correction fluid destroys the original record and is not acceptable.

So the pencil entries should be converted to a proper record: transcribe the information in ink with a note that it is a transcription of a pencil entry, signed and dated, and retain the original page rather than removing it. For the over-written date, do not attempt to rewrite history; annotate the entry to explain what the original date was and what the correct date is, based on other evidence, and sign and date the annotation. What you must not do is backdate an entry to fill the three-year gap - that is falsification of a maintenance record, regardless of the owner's intentions, and it would misrepresent the aircraft's maintenance history to the CAA and any future purchaser.

Not on the present information. The aircraft needs a New Zealand airworthiness certificate before it can fly here, and the Australian export certificate and records support that process, but the gaps and the undocumented repair must be resolved first. For the three-year gap, you need to establish what maintenance was actually done and whether scheduled inspections and airworthiness directives were complied with; if records are genuinely unavailable, the practical route is to carry out the inspections and checks necessary to establish the aircraft's condition, and to document that basis. The CAA may need to be involved in accepting the aircraft's records.

For the 2015 spar repair, a repair to primary structure requires approved data. A handwritten letter is not approved data unless it references an approved repair scheme or design approval. Until the repair is validated, you cannot satisfy yourself that the aircraft is airworthy. An annual review of airworthiness is a positive statement based on a documented assessment of the aircraft's continuing airworthiness; it is not a paperwork exercise to unlock a rally. If any flight is needed before full certification (for example to move the aircraft to a maintenance base), that would require a special flight permit with conditions.

Aircraft logbooks and the records that establish the aircraft's maintenance history and airworthiness directive compliance must be kept for the life of the aircraft, and maintenance records for the periods required by the rules and by the organisation's exposition. They must be made available to the CAA and to subsequent owners and maintenance organisations; that is why correcting them properly matters more than making them look neat.

Tell the owner plainly: you will not backdate entries, because that would be a false record and would expose both him and you; you will not tidy the logbooks by removing or over-writing anything, but you will annotate and transcribe so the record is clear and honest; and you cannot issue the release or the annual review until the record gaps and the spar repair are resolved. Give him a written list of what is needed: evidence of the missing maintenance or inspections to establish condition, approved data for the repair or an engineering assessment, and the New Zealand certification steps. Being clear early is kinder than a rally-week surprise, and it protects the aircraft's value as well as its airworthiness.