T-45C TS, ADV & IUT ENG-10
Hydraulic System Malfunctions
2.
Verifications
a.
No HYD 2 pressure fluctuation (between 2500 and 3000 psi)
b.
RAT caution light not illuminated
c.
Visual confirmation from another aircraft
(1) RAT not extended
(2) RAT extended and spinning but still no pressure
B. Failure to operate
1.
Indications
a.
RAT extended, RAT caution light illuminated
b.
Pressure below 1500 psi
2.
Verifications
a.
RAT seen extended by another aircraft
b.
Turbine not spinning
C. Effects on flight safety
1.
With RAT failure, no emergency backup for flight controls available
if HYDs 1 and 2 fail
2.
Possible hydraulic leak
VI. HYD 1 and HYD 2 failure (RAT operating)
A. Indications
1.
MASTER ALERT light flashes
2.
Caution tone sounds
3.
HYD 1 caution light illuminated
4.
HYD 2 caution light illuminated
5.
RAT caution light illuminated
B. Verifications
Fig 4: Indications
Summary
1.
HYD 1 pressure reads below 600 +/- 50 psi
2.
HYD 2 pressure gauge shows cycling pressure (between 2500 and
3000 psi)
(9-98) Change 2
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