POWERPLANT

Question 1

1. What does an illuminated ENGINE CONTROL light mean?

Answer 1

 Engine control system is not dispatchable due to a fault

Question 2

2. Should you takeoff with an ENGINE CONTROL light illuminated?

Answer 2

 No

Question 3

3. Will you see an ENGINE CONTROL light in

flight?

Answer 3

 No, ground only light

Question 4

4. Each EEC has how many independent

channels (computers)?

Answer 4

 Two

Question 5

5. If an EEC channel fails, how do you select an

operating channel?

Answer 5

 You don’t, EEC channel switching is automatic

Question 6

6. What will the EEC do for you if you shove the throttle to the forward stop (firewall)?

Answer 6

 The EEC will provide N1 and N2 redline overspeed protection (not EGT)

Question 7

7. What engine protection will the EEC give you?

Answer 7

 N1 & N2 redline overspeed protection

Question 8

8. The EEC has how many control modes?

Answer 8

 Two

Question 9

9. What are these modes? (EEC Control Modes)

Answer 9

 Normal

 Alternate

Question 10

10. The EEC has how many alternate modes?

Answer 10

 Two

Question 11

11. What are the EEC alternate modes?

Answer 11

 Soft

 Hard

Question 12

12. How does the EEC operate in the soft ALTN

mode?

Answer 12

 EEC uses the last valid flight conditions to define engine parameters: Limits may change if conditions do

Question 13

13. What do the switches and lights look like in the soft ALTN mode?

Answer 13

 ON light and amber ALTN light

Question 14

14. How does the EEC operate in the hard ALTN

mode?

Answer 14

 ALTN thrust schedule, factory pre- programmed hard data

Question 15

15. What do the switches and lights look like in the hard ALTN mode?

Answer 15

 ALTN light only (pushbutton)

 ON light and ALTN light (pull throttle to idle)

Question 16

16. Will you get full rated power in the hard alternate mode?

Answer 16

 Hard alternate mode thrust is always equal to or greater than normal mode thrust for the same lever position

Question 17

17. Does the EEC provide N1 and/or N2 redline overspeed protection?

Answer 17

 Yes

Question 18

18. Does the EEC provide EGT redline

exceedence protection?

Answer 18

 No (except on ground starts only)

Question 19

19. What are the IDLE phases the EEC can select?

Answer 19

 Ground min.
 Flight min.
 Approach

Question 20

20. When is APPROACH idle automatically selected?

Answer 20

 Flaps in LDG CONFIG or ENG ANTI-ICE ON

Question 21

21. In flight, if a fault prevents the EEC from receiving flap or anti-ice signals, when is APPROACH idle selected?

Answer 21

 Below 15000feet MSL

Question 22

22. What does an illuminated amber REVERSER

light mean?

Answer 22

 Fault in the reverser system

Question 23

23. What are four things that can cause the

REVERSER light to illuminate?

Answer 23

 Auto restow system active
 Translating sleeve not in commanded position
 Isolation valve not in the commanded position
 Synchronization shaft lock circuitry problem

Question 24

24. When do the REVERSER lights come on in normal operation?

Answer 24

 When stowing the reversers

Question 25

25. For how long do the REVERSER lights | illuminate?

Answer 25

 When stowing the reversers.10 seconds

Question 26

26. When will you get a MC light & ENG | annunciator in the case of REVERSER light illuminated?

Answer 26

 When reverser light stays on past 12 seconds

Question 27

27. What is the function of the engine start switches GRD position on the ground?

Answer 27

Open start valve Closes bleed valve Arms ignition

Question 28

28. How does ignition operate in CONT?

Answer 28

 Selected igniter operates engine running

Question 29

29. How does ignition operate in FLT?

Answer 29

 Both igniters operate if engine failure is sensed with start lever in idle

Question 30

30. What is the power source for the LEFT igniters?

Answer 30

 associated AC transfer bus

Question 31

31. What is the power source for the RIGHT | igniters?

Answer 31

 Standby AC

Question 32

32. When must the engine start switches (with the | OFF option) be in CONT?

Answer 32

 takeoff, landing, heavy precip, anti-ice in use

Question 33

33. What is the difference between the OFF option and the AUTO option on the start switches?

Answer 33

With... eng is running flaps down below 18,000 ft or engine anti-ice is on you get ignition from the selected igniters

Question 34

34. How many autothrottle actuators are there?

Answer 34

 One servo motor for each throttle

Question 35

35. What has to happen before reverse thrust can be selected?

Answer 35

 Throttles must be at idle position

Question 36

36. Can the throttles be advanced while in reverse | thrust?

Answer 36

 No