What defines a "Periodic" flight inspection?

A "Periodic" flight inspection is best defined as a routine check based on established time intervals. This type of inspection is scheduled and conducted systematically at regular intervals to ensure that the aircraft systems and components are functioning correctly and safely. The importance of periodic inspections lies in their ability to maintain the airworthiness of the aircraft over time, as they help identify any wear or issues that may develop during routine operations. This proactive approach is essential for ensuring operational safety and compliance with aviation regulations.

In contrast, inspections performed at the time of commissioning are typically related to the initial setup and validation of the system, while one-time inspections are conducted when new equipment is introduced or significant changes are made. Inspections based on circumstance address specific concerns or anomalies rather than following a routine schedule, distinguishing them from periodic checks that are pre-planned and systematically executed.