What must be done if an aircraft with a steerable nosewheel does not steer correctly during towing?

In situations where an aircraft with a steerable nosewheel does not steer correctly during towing, the appropriate action involves resetting the torque-link lock. This component plays a critical role in the steering mechanism of nosewheel assemblies. If the torque-link lock is inadvertently engaged or malfunctioning, it can restrict the movement of the nosewheel, leading to difficulties in steering when being towed. Resetting the lock ensures that the steering mechanism is operational, allowing for safe and effective maneuvering of the aircraft.

Checking for mechanical issues is essential when troubleshooting any aircraft system, but the immediate step in response to the specific problem of steering not functioning correctly during towing is to address the torque-link lock first. The use of a tow bar is certainly helpful for towing, but it does not resolve the underlying steering issue. Engaging the parking brake is unrelated to the steering mechanisms during towing and would not contribute to solving the steering problem. Thus, resetting the torque-link lock directly addresses the core issue affecting the steerable nosewheel.