UJPT, E2-C2, ADV, & IUT EMFP-03
Engine and Hydraulic Emergency Procedures
II.
Hydraulic system malfunctions
Sg 2, fr 2
Lesson Organization
WARNING: Loss of all hydraulic pressure with
subsequent illumination of the HYD FAIL warning light
will result in loss of control of the aircraft.
A.
Hydraulic accumulator failure 1.8.1.5.8.2
Sg 2, fr 3, 4
Hydraulic
1.
Indications
Accumulator Failure
a.
Ground: Absence of adequate accumulator
pressure (1,100 + 50 psi) prior to engine start
during preflight
b.
In flight
NOTE: Both systems, including accumulators,
supply continuous hydraulic power to flight
controls.
(1) With both hydraulic systems operating
normally, there is no indication of a single
accumulator failure. If one accumulator
fails, then the redundant accumulator
provides adequate pressure damping and
reserve power.
(2) If the aircraft is operating on only one
hydraulic system and that system
accumulator fails, or if both accumulators
fail at once, then controls rely on line
pressure only and flight controls may not
respond smoothly, especially during
periods of high demand (a large or rapid
control stick displacement)
2.
Procedures
a.
Ground: initiate maintenance action
(9-98) Original
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