Which component secures the landing gear in a locked position?

The overcentre mechanism is a crucial component in the landing gear system that secures the landing gear in a locked position. This mechanism operates on the principle of leverage, ensuring that once the landing gear is deployed and reaches its fully extended position, the design of the mechanism prevents it from accidentally retracting. This is achieved by creating a stable equilibrium point where the forces acting on the mechanism favor keeping the gear locked in place during ground operations.

Such mechanisms are designed to hold the landing gear firmly, thereby preventing any unintended movements that could compromise the safety of the aircraft while on the ground. The overcentre mechanism also allows for a smooth transition when retracting the gear, as it releases the locking positions in a controlled manner. While other components such as hydraulic actuators and locking pin assemblies play important roles in the operation and engagement of the landing gear, the overcentre mechanism is specifically responsible for ensuring the gear remains securely locked once it is in the down and locked position.