Which statement about the Phase inspection is true?

Which statement about the Phase inspection is true?

• A. It is a one-time inspection for special circumstances
• B. It occurs after calendar date
• C. It is performed during overhaul only
• D. It occurs after accrual of a defined number of flying hours

Answer: (D)

Phase inspections are a recurring maintenance schedule driven by aircraft usage, not by the calendar. They are planned to occur after the airframe has accumulated a defined amount of flight time, spreading upkeep out across actual operation and catching wear or potential issues before they become problems. That’s why this statement—occurring after a defined number of flying hours—is the correct one. The other ideas don’t fit how phase inspections work: they aren’t one-time unless specifically noted for a unique situation, they aren’t tied to calendar dates, and they aren’t limited to overhaul events.

Phase inspections are a recurring maintenance schedule driven by aircraft usage, not by the calendar. They are planned to occur after the airframe has accumulated a defined amount of flight time, spreading upkeep out across actual operation and catching wear or potential issues before they become problems. That’s why this statement—occurring after a defined number of flying hours—is the correct one. The other ideas don’t fit how phase inspections work: they aren’t one-time unless specifically noted for a unique situation, they aren’t tied to calendar dates, and they aren’t limited to overhaul events.