Study Guide-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?
4
-Hot start
-Hung 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?
Engine flameout detection
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 is the normal operational position of the thrust levers when A/THR is active?
CL detent
What determines the max thrust the A/THR system will be able to command?
The position detent of the thrust levers
What are 3 ways to disconnect the A/THR?
-A/THR pb on FCU (not recommended).
-Instinctive Disconnect buttons.
-Thrust levers to Idle.
How do you disconnect the A/THR for the reminder of the flight?
Can you restore it?
What else would you lose?
-Press and hold the Instinctive Disconnect button for 15 seconds.
-No. on the ground only after both FMGCs power up.
-Alpha Floor Protection
When would THRUST LOCK occur?
-Thrust levers in CL detent and A/THR pb on the FCU pushed OR
-A/THR disconnects due to a failure.
