Why B777 APU Is Not Used On Takeoff???
Hi,
I have some questions regarding B777 APU:
-Is it true that the APU is not used during pack off takeoff? If yes, why there is such restriction?
- The APU is fitted with 2 starters (electric & pneumatic). Why there are 2 starters?
In case of all engines flame-out (no pneumatic power for the pneumatic starter), is the electric starter supplied by the battery? (separate battery
than the aircraft battery?)
-Up what maximum altitude can the APU provide pneumatic power, and pneumatic & electric power (in the same time)?
Feedback appreciated. Thank you.
Best regards.