REVIEW QUESTIONS – HYDRAULICS Flashcards Preview

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Flashcards in REVIEW QUESTIONS – HYDRAULICS Deck (13)
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1

1. Where are the hydraulic systems' fluid reservoirs located?

-Main Wheel Well

2

2. What pressurizes the System A and B reservoirs?

-Regulated bleed air

3

3. What pressurizes the Standby System reservoir?

-System B reservoir pressure

4

4. When do the letters RF (white) appear?

ReFill
-quantity is below 76%

5

5. What does the ELEC 2 pump ON/OFF switch control?

-The System A electric motor driven pump

6

6. What happens when an ENG hydraulic pump switch is turned off?

-Energizes the depressurization solenoid that closes the Blocking Valve (prevents fluid going to the pump, but the pump still operates)

7

7. What is normal Hydraulic System pressure? Maximum pressure?

-3000 psi +/- 200
-3500 psi is max pressure

8

8. What does the OVERHEAT (amber) light on the Hydraulic Panel indicate?

-That there is an overheat condition in that system

9

9. What is the purpose of the Power Transfer Unit (PTU)?

-to provide B system sufficient pressure to have normal rates of operation of the Autoslats and Leading Edge Devices if the B system Engine driven pump drops below a certain limit. It uses A system pressure with out any fluid transfer

10

10. Does System A or B pressure loss alone cause operation of the Standby Hydraulic System?

-No, you also need: flaps extended, airborne or wheel speed greater than 60 kts, and FLT CONTROL switch A or B Hydraulic System ON or the main PCU Force Fight Monitor (FFM) trips

11

11. What could cause automatic operation of the Standby Hydraulic System?

-Loss of System A or B, flaps extended, airborne or wheel speed greater than 60 kts, and FLT CONTROL switch A or B Hydraulic System ON or the main PCU Force Fight Monitor (FFM) trips

12

12. Which switches activate the Standby System for operation of the rudder and thrust reversers?

-FLT CONTROL switch to STBY RUD

13

13. What does the STANDBY HYD LOW QUANTITY (amber) light indicate?

-the Standby Reservoir quantity is approximately half empty