For aircraft operated under Part 91, which of the following records must be retained for at least one year, or until the work is repeated or superseded?

For aircraft operated under Part 91, which of the following records must be retained for at least one year, or until the work is repeated or superseded?

• A. Records of maintenance, alterations, preventative maintenance, 100 hour, annual, and progressive inspections
• B. Engine overhaul reports only
• C. Flight logs of the pilot
• D. The airplane's original airworthiness certificate

Answer: (A)

Record-keeping for maintenance is what this item is testing. For operations under Part 91, the maintenance history of an aircraft must be kept for at least one year after the work is completed, or until the work is repeated or superseded by newer maintenance or the next required inspection, whichever occurs first. This requirement covers a broad set of records: maintenance, alterations, preventative maintenance, 100-hour inspections, annual inspections, and progressive inspections. Keeping these records ensures anyone reviewing the aircraft can verify when and what work was done, supporting ongoing airworthiness and safe operation. Engine overhaul reports alone don’t capture the full maintenance history, so they don’t satisfy the requirement by themselves. Flight logs pertain to pilot flight time rather than the aircraft’s maintenance status, and the airplane’s original airworthiness certificate, while important, isn’t a maintenance record that must be retained for this purpose.

Record-keeping for maintenance is what this item is testing. For operations under Part 91, the maintenance history of an aircraft must be kept for at least one year after the work is completed, or until the work is repeated or superseded by newer maintenance or the next required inspection, whichever occurs first. This requirement covers a broad set of records: maintenance, alterations, preventative maintenance, 100-hour inspections, annual inspections, and progressive inspections. Keeping these records ensures anyone reviewing the aircraft can verify when and what work was done, supporting ongoing airworthiness and safe operation.

Engine overhaul reports alone don’t capture the full maintenance history, so they don’t satisfy the requirement by themselves. Flight logs pertain to pilot flight time rather than the aircraft’s maintenance status, and the airplane’s original airworthiness certificate, while important, isn’t a maintenance record that must be retained for this purpose.