What is a common method of locking an aircraft?

Locking an aircraft is an important safety practice, and one of the most common methods involves the use of flight control surface locks. These locks are designed to secure the control surfaces—such as ailerons, elevators, and rudders—when the aircraft is on the ground. By engaging these locks, the potential for accidental movement of the flight controls is minimized, preventing any unintended movements that could lead to safety hazards during maintenance, storage, or while the aircraft is parked.

The method of using flight control surface locks is a standardized procedure in aviation safety protocols. It helps in maintaining the integrity of the aircraft while it is not in operation, ensuring that ground personnel can work around the aircraft without the risk of it becoming active unintentionally. Proper use of these locks is fundamental in protecting both personnel and equipment.

Other methods mentioned do have relevance in aviation practices, but they are not specifically aimed at securing the aircraft in the same direct manner. For example, an engine shutdown sequence is part of normal operational procedures but does not prevent external risks when the aircraft is parked. Removing passengers certainly is necessary for safe operations, especially before any maintenance, but again, it doesn't secure the aircraft itself. Cutting the fuel supply line is an extreme measure that poses significant safety and