T-45C TS, ADV & IUT ENG-12
Hydraulic Subsystems Malfunctions
C. Parking brake caution light
1. Indications:
a. MASTER ALERT light flashes
b. Caution tone sounds in headsets
c.
PK BRK caution light illuminated
NOTE: The proceeding indications will appear only when the throttle is
advanced to midpoint.
a. Power advanced above 70%
b. Parking brake handle in the ON position
C. Effects on flight safety
1. Prevents landing/taxi attempts with parking brake engaged
VII. NWS failure
Fig 5: Nose Wheel
Steering System
A. Indications
Operation
1. MASTER ALERT flashes
2. Caution tone sounds in headsets
3. NWS caution light illuminated
4. Nose wheel fails to respond to input commands
B. Verifications: NWS HI advisory light not illuminated if
operating in high gain
C. Effects on safety
1. Alternative methods of steering aircraft on ground (i.e., differential
braking, rudder deflection) will be required
2. If hydraulic steering motor fails, nose wheel could be locked to the
left or right
NOTE: If the landing gear is emergency extended, hydraulic
pressure will not be supplied to the nose wheel steering and the
system will be inoperative.
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(9-98) Original
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