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Flashcards in 757 Hydraulics Deck (18):
1

What powers rudder and elevators

All 3 systems

2

What components does left system operate.

Right aileron. Alternate brakes
Elevator HDG
Rudder. Rudder ratio.
Yaw damper Left Auto pilot
Flaps /slats. NWS
Landing gear

3

PTU operates what components

Flaps
Slats
Landing Gear

4

When does the PTU operate.

When pressure low in left system

5

What components operate from right system

Left aileron PTU
Flight controls
Stabiliser trim. Elevator feel.
Right auto pilot
Spoilers
Normal Brakes

6

What system is available if RH system fluid lost and only standpipe fluid available

Reserve Brakes(normal brakes)

7

OVHT light means what.

High temperature in effected hydraulic system. Corresponding EICAS message

8

PTU supplies power to what systems

Landing gear
Flaps slats
NWS
HDG

9

How can you tell if PTU is supplying pressure

Status page will show .18 quantity in standpipe min required to operate and what ever pressure the PTU is supplying

10

What systems does the Centre hydraulic operate.

Ailerons. Stab trim
C auto pilot.
Spoilers
Elevator feel. Yaw damper
Rudder
Elevator

11

Left system standpipe operates what .

PTU

12

RSVR comes on when?

Low bleed air pressure to reservoir
Low quantity.

13

What pumps load shed when only one electrical source ?

C2

14

When does the RAT deploy

Dual engine failure
Or when manually selected on .

15

What indications are there that the RAT is producing pressure ?

Green pressure light on RAT switch

16

What is the minimum airspeed for RAT to work.

130kts

17

What system powers ailerons

Centre system powers both.
Right system powers left aileron
Left system powers right aileron.

18

C hydraulic standpipe operates what system .

RAT .requires .14 quantity. Will show 40 psi bleed air pressure until working