After completion of a maintenance instruction, for how long should it be canceled and filed?

• A. 6 months
• B. 1 year
• C. 3 months
• D. 2 years

Answer: (A)

The main idea is how long a completed maintenance instruction should be kept as a closed, or canceled, record. After finishing the maintenance task, the instruction is canceled to mark it as closed, and the record is filed for future reference. Six months is the retention period that provides enough time for any quick follow‑ups, QA checks, or minor investigations to surface, while keeping the file manageable. Longer periods like a year or two unnecessarily extend storage for completed actions, and a shorter window like three months may not cover typical review or audit needs. So, six months is the appropriate balance for canceling and filing.