Hydraulics Flashcards
Hydraulic System #1 receives pressure from which engine?
Engine #1
Hydraulic System #3 provides hydraulic pressure to _______.
elevator,
and rudder,
and ailerons
True or False: Hydraulic System #3 is normally pressurized by ACMP 1B.
False
True or False: There is only one way to close the hydraulic shutoff valves in each Engine.
False
True or False: Both Hydraulic System #1 and #2 main pumps are driven by their respective engine’s accessory gear box.
True
Nominal hydraulic system pressure is _______ PSI.
3,000 psi
When a hydraulic EDP fails, what color “X” is displayed on the hydraulic synoptic
Page?
amber
There are a total of _______ AC electrically-driven hydraulic pumps (ACMPs).
4
True or False: All three hydraulic systems have an EDP and an ACMP.
False
Hydraulic System #1 can be pressurized by _______.
EDP (1A) driven by left engine
or ACMP (1B) powered by bus 2
Which hydraulic ACMP pump can be powered by the RAT in the event of an AC
power failure?
ACMP 3A
True or False: Engine #1 and #2 hydraulic shutoff valves can be closed by pulling the respective engine’s fire handle.
True
Which of the following statements is true regarding the accumulators in the three hydraulic systems?
Helps maintain a constant pressure by smoothing transient demands
True or False: The hydraulic SOVs automatically close when fluid temperature
reaches 125 degrees C.
True
The EDPs normally deliver hydraulic fluid at _______ PSI to the associated
system’s consumers.
3,000 psi
The AC powered pumps in the hydraulic system include _______.
ACMPs:
1B,
2B,
3A & 3B
The ACMPs for Hydraulic System #1 and Hydraulic System #2 are normally left in the _______ position.
Auto
True or False: The PTU is used to assist in landing gear operation should the left
engine or left EDP fail.
False
[Should the right engine or right EDP fail]
True or False: The PTU allows for fluid transfer between all 3 hydraulic systems.
False
The PTU is associated with hydraulic systems _____ and _____.
1, 2
