A 30 day inspection is due when?

• A. The aircraft doesn't fly for 30 days
• B. The aircraft surpasses 30 flight hours
• C. The aircraft completes 30 landings
• D. Every 30 days regardless of activity

Answer: (A)

A 30-day inspection is a downtime-based check. It’s intended to catch issues that can develop while an aircraft is sitting on the ground, such as corrosion or fluid deterioration, so it’s scheduled after the aircraft has not flown for 30 days. It isn’t triggered by flight hours or landings, and it isn’t required every 30 days regardless of activity. If the aircraft has been flying, that 30-day clock isn’t the trigger; you follow the appropriate maintenance schedule based on hours or other activity, and the downtime interval starts again once the aircraft remains idle for 30 consecutive days.