T-45C TS, ADV & IUT ENG-10
Hydraulic System Malfunctions
C. Effects on flight safety
1.
Aircraft flight controls depend on Emergency Hydraulic System
only; aircraft is unflyable if RAT fails
2.
Aircraft control responses may be reduced on high demand
3.
Normal landing gear, flaps, slats, wheel brakes, arresting hook,
speed brakes, NWS, and launch bar inoperative
VII. Total system failure
A. Indications
1.
MASTER ALERT light flashes
2.
Caution and then warning tone sounds
3.
HYD 1 and HYD 2 caution lights illuminated
4.
RAT caution light illuminates, then may go off
5.
HYD FAIL warning light illuminates
6.
No cycling of pressure on HYD 2 gauge
B. Verifications: gauges show little or no pressure
Fig 4: Indications
Summary
NOTE: If the HYD 2 pressure gauge indicates no cycling of pressures,
either a significant hydraulic fluid loss or an EDP failure combined with
an inoperative RAT has occurred.
C. Effects on flight safety: total failure unlikely but an extreme emergency-
flight controls will be inoperative when accumulator is exhausted
Page 10-8
(9-98) Original
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