What type of inspection occurs after the accrual of a certain number of flying hours?

What type of inspection occurs after the accrual of a certain number of flying hours?

• A. Daily inspection
• B. Annual inspection
• C. Phase (PH) inspection
• D. Special inspection

Answer: (C)

Phase inspections are scheduled based on flight time or usage, not just a calendar date. After the aircraft has accumulated a specified number of flying hours (or cycles), a PH inspection is performed to inspect, service, and serviceable-critical items, then prepare the aircraft for the next interval. This hour-based approach spreads maintenance evenly across flying time and helps catch wear as it develops. Daily inspections occur with each operation or day of use, annual inspections are tied to a calendar year, and special inspections are unscheduled or triggered by specific events or conditions.

Phase inspections are scheduled based on flight time or usage, not just a calendar date. After the aircraft has accumulated a specified number of flying hours (or cycles), a PH inspection is performed to inspect, service, and serviceable-critical items, then prepare the aircraft for the next interval. This hour-based approach spreads maintenance evenly across flying time and helps catch wear as it develops. Daily inspections occur with each operation or day of use, annual inspections are tied to a calendar year, and special inspections are unscheduled or triggered by specific events or conditions.