Everything plausible and possible should be considered
Hi,
Chris,
I learned many years ago we must look to every possible detail. It could explain the fact(s).
Letīs wait to learn on % of failed batteries (MAIN or APU). One battery (BOS) is not an argument against the model.
The Decision Making on Li Ion usage as main certainly was more complex. (vs APU) The diode (if not used in other A/C) "protects" the (critical) battery in just one direction.
What is common:
1) Both batteries failed (APU and MAIN)
2) Battery of same type
3) Circuitry around (BC, BMs)
The higher electric power in 787 and the adoption of these higher capacity batteries must be viewed as something decided by fundamented reasons. The decision certainly was not trivial.
Last edited by RR_NDB; 31st Jan 2013 at 19:21.