| Nose Wheel Steering The airplane is equipped with nose wheel steering which is
powered by Hydraulic System A when the NOSE WHEEL STEERING Switch is in
the NORM position. Nose wheel steering is powered by Hydraulic System B
when the NOSE WHEEL STEERING Switch is placed to ALT. Nose wheel steering
is powered only when the airplane is on the ground. In the event of a hydraulic leak
downstream of the Landing Gear Transfer Unit, resulting in a loss of Hydraulic System 8
fluid in the reservoir, a sensor closes the Landing Gear Transfer Valve and altemate
steering will be lost.
Primary steering is controlled through the nose wheel steering wheel. Limited steering control is available through the rudder pedals. A pointer on the nose steering wheel assembly shows nose wheel steering position relative to the neutral setting. Rudder pedal steering is deactivated as the nose gear strut extends. A lockout pin may be installed in the towing lever to depressurize nose wheel steering. This allows airplane pushback or towing without depressurizing the hydraulic systems. |