*Engine-Thrust Levers Flashcards
*What controls the engines in all operating regimes?
FADEC- Full Authority Digital Engine Controls
*What redundancy does the FADEC have?
Dual channel redundancy- one channel is active while the other is standby.
*What is the power source for the FADEC?
-The system has its own alternator making it independent of the aircraft.
-if this alternator fails, the FADEC automatically switches to aircraft electrical power.
*When will the FADEC abort a start?
3
-Hot start
-Stalled start
-No light up
*If the FADEC detects a fault during auto start, is any crew intervention required?
No. The FADEC, will discontinue the start, clear the engine, and attempt a restart automatically.
*When does the FADEC command a higher engine idle speed?
-Bleed demand.
-Approach configuration
-High engine or IDG temperature
How many igniters fire during a normal automatic engine start sequence?
- 1 igniter with the other serving as a backup.
-The FADEC automatically alternates the igniters at each start.
*How may igniters fire in manual or in-flight starts?
both A and B
*When does continuous ignition automatically operate?
2
Engine flameout detection
Failure of the EIU (Engine Interface Unit)
What is the active range of the A/THR?
-Just above IDLE to the CL detent (2 engines)
-Just above IDLE to MCT detent (1 engine)
*What determines the max thrust the A/THR system will be able to command?
The position detent of the thrust levers
*What does a fault light on the ENG panel indicate?
3
-Auto Start Abort.
-Disagreement between switch and HP valve.
-Malfunction of the thrust control
*What are the functions of the FADEC?
-Fuel metering
-Engine limits based on thrust lever angle
-Start sequencing
-Provides engine indication and thrust limit display on the E/WD
*What controls the engine LP fuel valve?
Engine Master switch
ENGINE FIRE pb
