Hydraulic System Flashcards
1
Q
What are powered by Hydraulics?
A
Flight controls Spoilers Gear Nose wheel steering Brakes Thrust Reversers
2
Q
When do we need to refill our hydraulic Res?
A
When the value is in the CYAN
3
Q
Purpose of the PTU
A
Landing gear extension and retraction in the event that
Engine 2 fails
EDP 2 fails
4
Q
What is the emergency/parking brake used for?
A
It stores hydraulic pressure enough for 6 applications.
5
Q
PTU in AUTO does what?
A
Turns on the PTU when GEAR not up and locked OR FLAPS >0 AND; EDP 2 fails or Engine 2 fails WOW not active EDP 1 working RESV 2 is 12% or more
6
Q
ACMP 2 Auto
A
Ground: Flaps >0 and Wheel speed >50 or TOGA Single engine taxi on engine 1 when parking brake is not set or has not been set for more than 6 min Flight: Flaps >0 or EDP 2 fail or Engine 2 fail
7
Q
ACMP 3B
A
When 3A fails in flight
8
Q
What test happens when you pressurize 3A, 1, 2 in that order?
A
H-PBIT
9
Q
System 3 protecting?
A
Flow limiter (RAT deploy)-reduce the amount of flow during RAT deploy Pump unloader (start up)-reduces discharge pressure
