Answers
Hi Challenger05,
If you are talking about the 2000EX EASy the answer of your first 4 questions are:
1) Yes. See CODDE 1 Reference below.
The battery bus is powered whenever the battery 1 is installed and plugged in. Regardless of battery switch position, the battery bus provides electrical power directly to the:
- Fuelling panel
- Emergency and normal slat control circuit
- APU starter circuit
- Engine FIRE extinguishers secondary discharge
- Fuel shut-off valves
- Critical light circuit
2) If both engines fail the LH and RH ISOL will automatically isolate essentially leaving only the mini load powered and therefore only the LH and UP DU's powered. In this configuration the ECL will not be available. The screens are not clever enough to detect the failure and automatically reconfigure. Therefore, you must switch the LW and RH DU off to allow the ECL to be sent to the UP DU and be available.
3) Nothing to stop you running it for takeoff but the only reason I can think you would need to is if you had an engine driven generator U/S. In fact there is a specific procedure for it in CODDE 2 to allow just that. There are no speed limits for APU door but you will have to make corrections to TO speeds and fuel burn due to the increased drag.
4) Yes
Hope that helps.
Cheers,
TSP