HYDRAULICS

Question 1

What does the HYD CONT RUDDER SWITCH do……

Answer 1

Allows selection of manual rudder operation

When pushed, off illuminates and hydraulic power to the rudder is shut off, and the rudder reverts to manual operation

Question 2

What does the TRANS pump switch do…..
ON
OFF

Answer 2

Enables a pressurized system to mechanically power an unpressurized systme when both system resevoir quatities are normal

ON-opens valve on each side of Power Transfer Unit to connect left and right systems.
OFF-Closes valve on each side of the PTU to disconnect left and right systems

Question 3

What does the AUX hydraulic switch do….
ON
OFF

Answer 3

ON- Auxiliary Pump iscommanded on

OFF- Auxiliary pump is commanded off

Question 4

What is the purpose of the electrically driven auxiliary pump…..

Answer 4

Two purposes - back up to the right engine driven pump and to pressurize the hydraulic system on the ground when the engines are not running

Question 5

Where is the right AUX hydraulic switch….

Answer 5

Right wheel well

Question 6

If the right engine driven pump fails or the right engine fails, what happens to the components

Answer 6

The AUX pump maybe used to power the components

Question 7

What happens to the AUX pump if it overheats….

Answer 7

Has a built in thermal protection and automatically shuts down if it overheats

Question 8

Hydraulic system test

Answer 8

Pressuize the system the first flight of the day exterior inspection. Make sure to coordinate with the ground crew or another flight deck crewmember to obtain clearance to turn the TRAN and AUX HYDRAULIC PUMPS. If no observer is available, it may be done with alternate procedures.

Question 9

What happens if you have a electrical failure on the engine driven hydraulic pumps…..

Answer 9

When electrical power is removed from the pump, it defaults to on

Question 10

Items controlled on the Left Hydraulic system (3)

Answer 10

1. Left and right inboard spoilers
2. Left Engine Thrust Reverser
3. Elevator Augmentation system

Question 11

Items on the right hydraulic system (4)……

Answer 11

1. Left and right outbard spoilers
2. Rudder
3. Right thrust reverser
4. Landing gear

Question 12

Items controlled by both Hydraulic systems (5)…..

Answer 12

1. Slats
2. Flaps
3. Rudder Stop Limiter
4. Nosewheel Steering
5. Brakes

Question 13

What happens to the respective hydraulic system when you pull the fire handle….

Answer 13

Associated Engine Hydraulic Shutoff Valve is closed and fluide is cut off to the engine