What is the primary purpose of a nose-wheel steering lockout at high speeds?

• A. Disables steering at high speeds to prevent overdeflection and potential gear or wing damage during takeoff or retraction.
• B. Improves steering responsiveness at high speeds.
• C. Automatically centers the nose wheel during gear retraction.
• D. Locks the nose wheel to a fixed straight-ahead position during landing.

Answer: (A)

The main idea is that nose-wheel steering lockout is a safety feature that prevents the nose wheel from steering when the aircraft is moving fast. At high speeds, even small steering inputs can create large sideways forces on the nose gear and its attachments. Those forces can produce excessive loads on the gear, gear doors, or nearby structures during critical phases like takeoff or gear retraction, potentially causing damage or loss of stability. By locking the nose wheel straight ahead above a certain speed, the system keeps the aircraft tracking straight on the ground and avoids harmful steering-induced loads. Once the speed drops below the threshold, steering can be used again for taxiing.