HYDRAULICS

Question 1

1. What does an illuminated STBY HYD LOW QUANTITY light indicate?

Answer 1

 Low quantity (illuminates at approx 50%)

Question 2

2. Is this STBY HYD LOW QUANTITY light always armed?

Answer 2

 Yes

Question 3

3. What does an illuminated STBY HYD LOW PRESSURE light indicate?

Answer 3

 Low pressure

Question 4

4. Is the STBY HDY LOW PRESSURE light always armed?

Answer 4

 No

Question 5

5. When is the STBY HDY LOW PRESSURE light armed?

Answer 5

 When the standby system is armed or operating

Question 6

6. What does an illuminated STBY RUD ON light indicate?

Answer 6

 The standby rudder system is commanded on to pressurize the standby rudder power control unit

Question 7

7. When does illumination of the STBY RUD ON light take place?

Answer 7

 When the force fight monitor (FFM) detects opposing pressure between A and B actuators (this may occur if either system A or B is jammed or disconnected) or if Stby rudder switch is on (A or B)

Question 8

8. What is indicated by an electric pump OVERHEAT light?

Answer 8

 Associated pump has overheated  (Abex electric motor driven hydraulic pump option)  If an overheat is detected in either pump, the related overheat light illuminates  (Vickers electric motor driven hydraulic pump option)  If an overheat is detected in either pump, the related overheat light illuminates, power is removed from the pump and the low pressure light illuminates

Question 9

9. What is indicated by a LOW PRESSURE light?

Answer 9

 Output pressure is low

Question 10

10. When is the engine LOW PRESSURE light deactivated?

Answer 10

 When the associated engine fire handle is pulled

Question 11

11. When is the electric pump LOW PRESSURE light deactivated?

Answer 11

 Never

Question 12

12. What happens when you turn OFF an engine pump switch?

Answer 12

 Blocks output pressure (by way of a blocking solenoid)

Question 13

13. What happens in the hydraulic system when you pull and engine fire switch?

Answer 13

 Shuts off fluid to the pump and deactivates the low pressure light

Question 14

14. What is the normal hyd system pressure?

Answer 14

 3,000PSI

Question 15

15. What is the maximum hyd system pressure?

Answer 15

 3,500PSI

Question 16

16. What is the minimum hyd system pressure?

Answer 16

 2,800PSI

Question 17

17. What does an RF mean adjacent to the hydraulic quantity gage?

Answer 17

 Refill

Question 18

18. When is a RF indicated adjacent to hyd qty?

Answer 18

 Quantity less than 76%

Question 19

19. Which hydraulic system powers the: Gear

Answer 19

A

Question 20

19. Which hydraulic system powers the: TE Flaps + LE Devices

Answer 20

B

Question 21

19. Which hydraulic system powers the: Normal Brakes

Answer 21

B

Question 22

19. Which hydraulic system powers the: Flight Spoilers 1⁄2 by

Answer 22

A

Question 23

19. Which hydraulic system powers the: Flight Spoilers (2 out of four ea. wing) 1⁄2 by

Answer 23

B

Question 24

19. Which hydraulic system powers the: Autopilot A

Answer 24

A

Question 25

19. Which hydraulic system powers the: Autopilot B

Answer 25

B

Question 26

19. Which hydraulic system powers the: Ailerons

Answer 26

A & B

Question 27

19. Which hydraulic system powers the: Elevator

Answer 27

A & B

Question 28

19. Which hydraulic system powers the: Thrust reverser #1

Answer 28

A

Question 29

19. Which hydraulic system powers the: Thrust reverser #2

Answer 29

B

Question 30

19. Which hydraulic system powers the: PTU

Answer 30

A

Question 31

19. Which hydraulic system powers the: LGTU

Answer 31

B

Question 32

19. Which hydraulic system powers the: Ground Spoilers

Answer 32

A

Question 33

19. Which hydraulic system powers the: Yaw Damper

Answer 33

B

Question 34

19. Which hydraulic system powers the: Nose wheel steering

Answer 34

A

Question 35

19. Which hydraulic system powers the: Alt Nose wheel steering

Answer 35

B

Question 36

19. Which hydraulic system powers the: Alternate Brakes

Answer 36

A

Question 37

19. Which hydraulic system powers the: Rudder

Answer 37

A & B

Question 38

20. How does the output of an electric pump compare with the engine driven pump?

Answer 38

 Engine driven pump output volume 4 times greater

Question 39

21. Where are the heat exchangers for the (electric) hydraulic fluid located?

Answer 39

 Main fuel tanks

Question 40

22. How much fuel is required in the tanks for ground operation of the electric hyd pumps?

Answer 40

 1675lbs

Question 41

23. What are the consequences of a leak in System A engine pump or lines?

Answer 41

 Fluid Leaks to standpipe (approx 20% left at standpipe)

Question 42

24. What are the consequences of a leak in System A electric pump?

Answer 42

 Complete fluid loss

Question 43

25. What are the consequences of a leak in System B?

Answer 43

 Fluid loss to standpipe (still allows PTU operation)

Question 44

26. What are the consequences of a leak in the STBY System?

Answer 44

 Complete fluid loss (B system to 72%)

Question 45

27. What does the PTU do?

Answer 45

 LED extension and retraction; autoslat operation (airborne, flaps \<15 but not UP, and loss of System B engine driven pump pressure)

Question 46

28. What does the LGTU do?

Answer 46

 B system transfers fluid to A system to help raise the gear

Question 47

29. What does the STBY Hydraulic system power?

Answer 47

 Standby rudder, thrust reversers, leading edge devices, and Stby yaw damper (manual reversion)

Question 48

30. How is the STBY HYD System activated manually?

Answer 48

 STBY rudder or ALT flaps master SW

Question 49

31. How is the STBY HYD System activated automatically?

Answer 49

 Loss of system A or B, flaps not up, 60 KTS or greater or airborne or FFM activated