Flashcards in REVIEW QUESTIONS – ENGINES, APU Deck (26)
1. Define N1
Low Pressure Compressor. Single Fan and 3-stage booster
2. Define N2
High Pressure Compressor. 9-stage compressor, with 4 stages of Variable Stator Vanes
3. What are the Start Lever positions?
4. What is required for selection of Reverse thrust?
The related thrust lever to be at idle
and RA 10 or on the ground.
5. What fuel valve(s) close when an engine Start Lever is moved to CUTOFF?
The Spar Fuel Shutoff Valve and Engine Fuel Shutoff Valve close
6. What component controls and monitors engine parameters?
7. The Electronic Engine Control (EEC) provides exceedance protection for which parameter(s) in normal mode?
-N1 and N2 redline overspeed
8. In Normal Mode, what does the Electronic Engine Control (EEC) use to calculate N1 thrust ratings?
-Bleed air demand
-Sensed flight conditions
9. What are the possible EEC modes with the Engine EEC switch showing both the ON (white) and ALTN (amber) displays illuminated?
-Hard Alternate from Soft Alternate mode.
10. Compare thrust in EEC HARD ALTERNATE Mode to normal mode for a given thrust lever position.
Hard Alternate is always equal or greater to normal thrust.
11. What does an ENGINE CONTROL (amber) light mean?
-Fault in the EEC that prevents dispatching. Comes one with a no dispatch fault, engine is operating, and aircraft is on the ground.
12. What mode is active with the Thrust Mode Display indicating R-TO (green)?
-With Engine Display Control Panel in Auto, this is Reduced Takeoff.
13. What causes the ENG FAIL Alert (amber) on the EGT indicator?
-The engine is operating at a condition below sustainable idle (50%N2) and sudden decrease.
14. What removes an ENG FAIL Alert (amber)?
-Engine recovers, Start Lever moved to Cutoff, or Fire Switch is pulled.
15. On the ground, after engine shutdown, what does a red box on the EGT Readout indicate?
-That an exceedance has occurred.
16. What does “reverse video” displayed on the Engine Vibration readout indicate?
-High vibration levels
17. What should the ENG VALVE CLOSED lights (blue) and SPAR VALVE CLOSED lights (blue) indicate during a normal preflight, power ON, Engines not running?
18. What does an illuminated FILTER BYPASS light (amber) indicate?
-That an impending fuel filter bypass might occur due to contaminated fuel filter
19. What is the indication if the engine oil pressure drops below redline during takeoff roll (>80 kts)?
-a steady yellow LOW OIL PRESSURE light in the Upper Display Unit
20. What does the Ignition Select Switch in the IGN R position select?
-The Right Igniter on both engines
21. In flight, what does the Engine Start Switch in CONT provide with the Engine Start Lever in IDLE?
-Provides ignition to selected igniter and both igniters when N2 is below idle
22. In flight, what does the Engine Start Switch in FLT provide with the Engine Start Lever in IDLE?
-Provides ignition to both igniters
23. What does a steady START VALVE OPEN (amber) light indicate?
-the respective start valve is open and air is supplied to the starter.
24. What does an amber REV indicates? A green REV?
-Amber - the reverser sleeve is not in the stowed position.
-Green - The reverser sleeve is in the deployed position and reverse thrust level can be raised.
25. What does a REVERSER (amber) light on the Aft Overhead Panel indicate?
-The reverser is commanded to stow (and extinguishes 12 seconds later) or a malfunction has occurred.