Hydraulics Flashcards
What is the power source for the system B ELEC 1 hydraulic pump
AC 1
Which statement is true regarding the standby hydraulic system connection to other reservoirs
Connected to system B reservoir
A leak in the number two engine driven hydraulic pump will drain the B system reservoir to empty
False
What would be the first indication of a leak in the Standby Hydraulic System
System B quantity decreases
During cruise at FL 310, the pilots notice that the brake pressure reads 0 psi. System B pressure is 3000 psi and system B quantity is full. What is the problem
The brake accumulator precharge has leaked out
How is hydraulic fluid cooled
Heat exchangers in the respective main fuel tank
What occurs when a fire switch is pulled
Shuts off hydraulic fluid supply to respective engine driven pump
What would extinguish (disarm) a number one engine driven hydraulic pump LOW PRESSURE light
Pulling the respective fire switch
Which of the following are operated by the A hydraulic system
Alternate brakes for all main wheels
Which of the following is/are operated by the B hydraulic system
Normal brakes for all main wheels
What does an illuminated single hydraulic pump LOW PRESSURE light indicate
The pump output pressure is below acceptable limits
What does an illuminated hydraulic OVERHEAT light indicate
Electric pump overheat
When is the STANDBY HYD LOW QUANTITY light armed
Whenever the aircraft electrical buses are powered
When is the STANDBY HYD LOW PRESSURE light armed
When electric power is supplied to the standby pump
When performing the Standby Rudder Check (crew option) , what occurs when the B FLT CONTRoL switch is placed to OFF
The B system flight control valve closes and B system pressure is isolated from the primary flight controls
What occurs when the B FLT CONTROL switch is placed from OFF to STBY RUD position
All answers are correct
After placing a FLT CONTROL switch to STBY RUDDER, how is the open position of the standby rudder shutoff valve indicated
The respective FLT CONTROL LOW PRESSURE light extinguishes
When does the standby pump activate automatically
Loss of A or B system pressure with flaps extended with flaps extended while airborne, or on the ground with wheel speed greater than 60 knots
Which action turns on the STANDBY HYD pump
ALTERNATE FLAP master switch placed to ARM position
The Power Transfer Unit provides a backup source of hydraulic pressure (power) to operate
Leading edge flaps and slats
The electric hydraulic pumps of system A and B are equipped with thermal switches. What is the cockpit indication when a pump thermal switch activates
The respective OVERHEAT light illuminates
The Auto Slat system
Is normally powered by System B
Puling the #2 Fire Switch
Shuts off fluid to the engine driven hydraulic pump in System B
A standby system hydraulic leak is first indicated by
A decrease in B quantity indication
System A electric hydraulic pump is powered by which electrical power source(500)
Gen Bus #2
The Standby Hydraulic System provides hydraulic power to the
Rudder, thrust reversers, and leading edge devices
The normal brake system is powered by
Hydraulic system B
What is the minimum fuel quantity in each wing tank for operation of the electric hydraulic pumps on the ground
1676 pounds
The Standby System hydraulic pump is driven by
An electric motor
The Power Transfer Unit is driven by
Hydraulic pressure from system A
Which hydraulic system pumps must be turned OFF during pushback if the nosewheel steering bypass pin is not installed
System A
