What action is taken during towing to prevent accidental nose wheel steering operation?

What action is taken during towing to prevent accidental nose wheel steering operation?

• A. Discharge all hydraulic pressure
• B. Remove battery
• C. Disconnect fuel line
• D. Remove oil filter

Answer: (A)

During towing, the main idea is to keep the nose wheel from moving in response to tug forces. Nose wheel steering is typically powered by a hydraulic system, so releasing the pressure in that system prevents the steering actuator from moving. Discharging all hydraulic pressure ensures there’s no hydraulic force available to turn the nose gear, keeping it centered and stable while the aircraft is being moved. Removing the battery won’t reliably stop steering because the hydraulic actuation can still be neutral or pressurized even with electrical power cut. Disconnecting the fuel line or removing the oil filter have no effect on the steering hydraulics and could create other safety issues.

During towing, the main idea is to keep the nose wheel from moving in response to tug forces. Nose wheel steering is typically powered by a hydraulic system, so releasing the pressure in that system prevents the steering actuator from moving. Discharging all hydraulic pressure ensures there’s no hydraulic force available to turn the nose gear, keeping it centered and stable while the aircraft is being moved.

Removing the battery won’t reliably stop steering because the hydraulic actuation can still be neutral or pressurized even with electrical power cut. Disconnecting the fuel line or removing the oil filter have no effect on the steering hydraulics and could create other safety issues.