When is a preflight inspection required to be completed?

A preflight inspection is a crucial part of aircraft safety management and is specifically required to be completed prior to boarding the flight. This inspection ensures that the aircraft is in a condition for safe operation and meets all necessary regulatory requirements. Conducting a preflight inspection before boarding allows for the identification and rectification of any potential issues that could affect the flight, ensuring the safety of both crew and passengers.

While inspections after every flight, when modifications are made, or on a weekly basis contribute to overall aircraft maintenance and safety, they are not specifically tied to the requirement of a preflight inspection. The preflight inspection serves as a last check to confirm that the aircraft is ready to take off just before the flight begins, making it essential in the overall flight preparation process.