How many days must the maintenance log cover?

• A. 7
• B. 14
• C. 30
• D. 365

Answer: (B)

The key idea is to keep maintenance activity recent enough to be verifiable and auditable before the aircraft operates again. Fourteen days is the standard window because it provides a timely snapshot of everything done in the most recent two weeks—routine checks, corrective actions, and any service bulletins or AD-driven work—so operators can confirm the aircraft is in compliance and airworthy.

This duration balances practicality with traceability: it’s long enough to capture ongoing upkeep without making the log unwieldy, and short enough to ensure that recent maintenance isn’t overlooked during inspections or audits. Shorter spans, like a week, risk missing work that spans weekends or holidays; longer spans, like a month or a year, can delay visibility into current aircraft status and complicate recordkeeping.

So, the maintenance log should cover fourteen days.