What is the flight control gust lock used for?

The flight control gust lock serves a critical function in aviation by locking the primary flight control surfaces—such as ailerons, elevators, and rudders—when the aircraft is parked. This locking mechanism is essential for preventing unwanted movement of the flight controls due to wind gusts or other external forces while the aircraft is stationary. Unsecured flight controls can lead to damage or malfunctions, as they may become displaced by gusty winds, which could complicate or hinder the aircraft’s readiness for flight.

Setting the gust lock ensures that the aircraft remains safe and its components intact while not in operation. It is a necessary precaution that enhances the overall safety and maintenance posture of the aircraft during ground operations. Other choices, while they might touch upon relevant operational issues, do not specifically pertain to the primary purpose of the gust lock system.