Powerplant Flashcards
If the #1 ENG MAN START pb is depressed, will the engine begin to motor?
No, the ENG MODE selector must be set to either CRANK or IGN/START
When might a manual start be considered?
If an automatic start aborts due to low starter inlet air pressure
During a manual start of the #1 engine, does the ENG MAN START pb have to be depressed to close the start valve?
No, the start valve closes automatically when N2 is greater than or equal to 50%
What are the 5 positions for the thrust levers?
TOGA, FLEX/MCT, CL, IDLE, MAX REV
How is autothrust usually armed on the ground?
By setting the thrust levers at the FLEX or TOGA detent when the engines are running
How is autothrust usually activated?
By selecting the thrust levers to CL detent
How is activation of autothrust confirmed?
A/THR is displayed in white in column five of the FMA
What is Thrust Lock?
The Thrust Lock function prevents thrust variations when A/THR fails/disconnects
What is Alpha Floor?
A protection that commands TOGA thrust regardless of thrust lever position
What is TOGA Lock?
After the aircraft leaves Alpha floor conditions, TOGA thrust is frozen and thrust lever movement has no effect until Autothrust is disconnected
What happens if the instinctive disconnect pushbuttons are pushed and held (15 sec)?
The autothrust system is disconnected for the remainder of the flight, including Alpha Floor
What does the FAULT indication on the ENG panel mean?
Automatic start abort, or a fuel valve disagreement
With the ENGINE MODE switch in NORM, when will ignition be provided?
Flame out and EIU failure (CFM), flame out, EIU failure, slats extended and engine anti-ice on (IAE).
What does the FADEC control?
Start sequencing, fuel metering, and engine limits
What happens if one FADEC fails?
The FADEC is dual channel so the other channel will provide full authority for all engine functions
