Who is authorized to release an aircraft back to service after a test flight?

• A. The Chief Inspector
• B. The Maintenance Engineer
• C. The PIC who conducted the flight
• D. The AME on duty

Answer: (C)

The correct answer is that the PIC (Pilot-in-Command) who conducted the flight is authorized to release an aircraft back to service after a test flight. This authorization is particularly important because it ensures that the pilot has firsthand knowledge of the aircraft's performance during the test flight and can assess whether it is safe and airworthy for further operations.

The PIC is responsible for the safety of the flight and must ensure that all deficiencies or issues encountered during the test flight are addressed. Therefore, their assessment is crucial in determining if the aircraft can be considered airworthy again.

Other roles within the maintenance and operational framework, such as the Chief Inspector, Maintenance Engineer, or the AME (Aircraft Maintenance Engineer) on duty, do play significant roles in the maintenance and safety of the aircraft, but they are not the ones conducting the flight evaluation. The task of releasing the aircraft back to service is explicitly the responsibility of the PIC who has the direct experience and knowledge of the aircraft's performance post-repair or maintenance.