Powerplant (Engines) Flashcards
What happens when you hold the instinctive disconnect pbs for more than 15s on the THR LEVERS?
The ATHR system is disconnected for the remainder of the flight. All ATHR functions including ALPHA FLOOR are lost, and they can be recovered only at the next FMGC power-up on the ground.
You are about to take off and have not inserted a FLEX temperature, can you still take off?
Yes, by selecting TOGA.
Is there a mechanical connection between the thrust lever and the engine?
No.
How the thrust is controlled with the ATHR active?
In auto thrust mode, the FMGC computes the thrust, which is limited to the value corresponding to the thrust lever position, unless the Alpha Floor mode is activated.
How is the thrust controlled with the ATHR not active?
Each engine is controlled by the position of the thrust lever. The pilot controls thrust by moving the thrust lever between the IDLE and TOGA positions. Each position of the thrust lever corresponds to an N1 output.
What is meant by Approach Idle?
It is regulated according to aircraft altitude, regardless of bleed system demand. It is selected in flight, when the flaps are extended with FLAPS lever not at zero position. It allows the engine to accelerate rapidly from idle to go-around thrust.
What is LVR CLB?
This flashes in white (3rd line on the FMA) if the thrust levers are not in CLB position while the aircraft is above the thrust reduction altitude with both engines running.
What is LVR MCT?
It flashes in white (3rd line on the FMA) if the thrust levers are not in MCT position after an engine failure, with speed above green dot.
What is LVR ASYM?
When one thrust lever is in the CLB DETENT and the other one is out of the detent, the LVR ASYM amber message will come up on the FMA until both levers are set in the CLB DETENT - only with both engines operative.
If a thrust lever is set between two detents, what is the rating limit?
When a thrust lever is set between two positions, the FADEC selects the rating limit corresponding to the highest mode.
During an engine start sequence, the grey background on the N2 disappears at around 57%. What does this indicate?
This indicates that the start sequence has been completed.
What is the meaning of the ‘AUTO CRANK IN PROGRESS’ message appearing on E/WD during an auto start?
After any start attempt that is not successful, a dry crank automatically occurs. This auto dry crank sequence will be initiated by the FADEC and this is what the E/WD message means.
During engine start, if the amber FAULT light illuminates on the ENG MASTER panel, what could have happened?
The amber FAULT light comes on, and a caution appears on ECAM, if there is:
- An automatic start abort.
- A start valve fault.
- A disagreement between the HP fuel valve position and it’s commanded position.
What does EGT mean?
EGT is short for Exhaust Gas Temperature. This is the temperature of the gases escaping at the exhaust of an engine, the temperature at the outlet from the turbine is measured by thermocouples.
What does EPR mean?
EPR is short for Engine Pressure Ratio. The EPR instrument provides a readout of the ratio of the turbine discharge total pressure to the compressor inlet total pressure.
