Flashcards in Hydraulics Deck (18):
What flight controls get all 3 hydraulic system power?
Elevators and rudders
HMG normally powered by what hyd system normal and alt?
Left system, but can be right through the power transfer unit
Normal and ALT brakes powered by?
Normal = right
Alt = left
What can be powered by the right system through the PTU?
Flaps, slats, landing gear and nose wheel steering
RSVR light means? (2)
Either low reservoir quantity or pressure
Hyd OVHT means?
When does load shedding occur on C2 hyd pump?
With only one source of electrical power
When does PTU automatically work? (2)
When left engine is shutdown or output pressure of left eng pump is low
IF leak has caused loss of left system how does PTU still work?
There is a standpipe in the reservoir
Can the PTU power the HMG?
When is HMG valve open and HMG auto powered?
When both AC buses are lost
With HMG operating does it take longer to use flaps and slats?
How normal brakes protected if right system leak?
Stand pipe in reservoir
What does isolation valve in reserve brake system do?
Makes sure reserve fluid is exclusively used for the brakes
Below what hyd quantity does the RSVR light come on?
Below 0.5 on status
When does RAT deploy automatically?
When both engines fail
Above what speed does RAT provide adequate sys pressure for flight control portion of centre system?