REVIEW QUESTIONS – ENGINES, APU Flashcards
- Define N1
Low Pressure Compressor. Single Fan and 3-stage booster
- Define N2
High Pressure Compressor. 9-stage compressor, with 4 stages of Variable Stator Vanes
- What are the Start Lever positions?
IDLE
CUTOFF
- What is required for selection of Reverse thrust?
The related thrust lever to be at idle
and RA 10 or on the ground.
- 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
- What component controls and monitors engine parameters?
The EEC
- The Electronic Engine Control (EEC) provides exceedance protection for which parameter(s) in normal mode?
-N1 and N2 redline overspeed
- In Normal Mode, what does the Electronic Engine Control (EEC) use to calculate N1 thrust ratings?
- Bleed air demand
- Sensed flight conditions
- 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.
- 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.
- 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.
- What mode is active with the Thrust Mode Display indicating R-TO (green)?
-With Engine Display Control Panel in Auto, this is Reduced Takeoff.
- 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.
- What removes an ENG FAIL Alert (amber)?
-Engine recovers, Start Lever moved to Cutoff, or Fire Switch is pulled.
- On the ground, after engine shutdown, what does a red box on the EGT Readout indicate?
-That an exceedance has occurred.
- What does “reverse video” displayed on the Engine Vibration readout indicate?
-High vibration levels
- What should the ENG VALVE CLOSED lights (blue) and SPAR VALVE CLOSED lights (blue) indicate during a normal preflight, power ON, Engines not running?
-Dim Blue.
- What does an illuminated FILTER BYPASS light (amber) indicate?
-That an impending fuel filter bypass might occur due to contaminated fuel filter
- 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
- What does the Ignition Select Switch in the IGN R position select?
-The Right Igniter on both engines
- 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
- In flight, what does the Engine Start Switch in FLT provide with the Engine Start Lever in IDLE?
-Provides ignition to both igniters
- What does a steady START VALVE OPEN (amber) light indicate?
-the respective start valve is open and air is supplied to the starter.
- 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.
- 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.
- Which APU lights will accompany an automatic APU shutdown
-APU Annunciator and Master Caution, and maybe FAULT, LOW OIL PRESSURE, or OVER SPEED. Red Master Warning Fire
