Which inspections are likely scheduled at specific intervals throughout the aircraft's service?

Phase inspections are scheduled at specific intervals throughout an aircraft’s service life to ensure it remains airworthy and safe for operation. These inspections are part of a systematic approach to maintenance, dividing the overall aircraft maintenance needs into distinct sections or phases. Each phase focuses on particular components of the aircraft, allowing for thorough and continuous evaluation and servicing without needing the aircraft to be grounded for extended periods.

This structured approach helps identify any issues early and ensures maintenance compliance with aviation regulations. Phase inspections typically occur after a predetermined number of flight hours or calendar days, making them a vital component of an aircraft's maintenance program.

Daily inspections are performed more frequently—often before each flight—but lack the same comprehensive depth as phase inspections. Transfer inspections focus on aircraft being handed over from one party to another and are not regularly scheduled. Acceptance inspections ensure that a newly acquired aircraft meets contractual specifications, but they are conducted only once at the time of acquisition rather than on a recurring schedule.