13- hydraulics

Question 1

system a

Answer 1

landing gear
nose wheel steering
alternate brakes
ground spoillers
tail skid 900

ap a
flight spoiller 2,4,9,11
reverser left
ailerons rudder elevator elevator feel 
landing gear transfer valve
ptu

Question 2

system b

Answer 2

flaps
normal brakes
yaw damper
alternate nose wheel steering

ap b
reverser right
flight spoiler 3,5,8,10
aileron rudder elevator elevator feel 
lgtu pressurize the lg

Question 3

standby sys

Answer 3

thrust reversers
rudder
leading edge flaps/slats
standby yaw damper

Question 4

stand by automatic operation when? 4

Answer 4

loss sys a or b
flap extend
airborne or more 60kt and flt cont sw a or b on or
pcu force fight monitors trip

Question 5

stand by sys ops what? 4

Answer 5

stby elec motor pump
open stdby rudder sov
allow stdby sys to power rudder and reverser
iluminate stdby rudder on master caution flt control lights

Question 6

flt control sw standby rudder 7

Answer 6

activate standby pump
shutoff flight controls sov isolate ailerons elevator and rudder(passing by off)
open standby rudder sov
deactivate the low press light (stdb rud sov opens)
pressurize stdby rudder pcu
allow stand by to power rudder and reverser
illuminate stby rudder on master caution and flight control lo press lights

Question 6

flt control sw off

Answer 6

closes fltcontrol sov

isolates ailerons, elevators and rudder from respective sys

Question 7

flt control lo press light

Answer 7

low press sensed to aileron rudder and elevators

deactivated when stby rudder on and stdby rudde sov opens

Question 8

stdby lo qty light

Answer 8

always armed

lo qtdy on reservoir

Question 10

stdby lo qty

Answer 10

around half lo qtdy light on

makes sys b go to 72%

Question 11

stdby low pressure light

Answer 11

armed only when pump operation is selected or automatic function activated
output pressure of pump is low

Question 12

stdby rudder on

Answer 12

electric motor driven pump is commanded to pressurize stdby rudder PCU

Question 14

alt flap master sw in Arm 4

Answer 14

closed trailing edge flap bypass valve,
activate the stand by pump,
arm alt flap sw
allow stand by to power leading edge flap slat and thrust reverser

Question 15

sys a leak on eng pump

Answer 15

elec pump ok with 20% of fluid

Question 16

sys a elec pump leak

Answer 16

qtdy zero and no pressure

Question 17

lo qty

Answer 17

76% valid on gnd both eng off or after land with flaps upon taxi in

Question 17

sys b leak either pump

Answer 17

no pressure no fluid

standpipe is enough only for ptu operation

Question 18

ptu

Answer 18

use volume from sys A to give more volume, by power a electric motor to operate flaps when:
sys b eng pump press low;
airborne
flaps not up

Question 19

overheat

Answer 19

hyd fluid to cool the motor pump or the pump has overheated

Question 20

landing gear transfer unit

Answer 20

supply volume to raise gear when eng pump volume is lost as follows:
airborne
low n1
land gear lever up
either gear not up locked

Question 21

eng pump sw

Answer 21

on de-energises the block valve to allow pressurized fluid to enter the sys