What is the purpose of a Functional Check Flight after maintenance?

• A. To verify engine performance.
• B. To verify systems operate within limits in actual flight conditions and confirm restoration of airworthiness.
• C. To test only the landing gear.
• D. To record maintenance data for regulatory compliance.

Answer: (B)

A Functional Check Flight tests the aircraft in real flight conditions to confirm that all systems operate within limits and that the aircraft has been restored to airworthiness after maintenance. This flight validates how propulsion, flight controls, hydraulics, electrical systems, avionics, and other critical systems perform together under actual operating conditions, not just on the ground. By experiencing takeoff, climbs, cruising, maneuvers, and landings, any residual faults become apparent so they can be addressed before returning to service. It’s broader than just engine performance or a single subsystem, and administrative maintenance records are separate from the flight test itself.