NWA SLF:
Pilots saving our engineering asses.
If the investigation concludes the Li Ion batteries were operating with excessive voltage each cell (> 4,2 V or so) you still will consider that is reasonable transfer the issue to the pilots?
In AF447 case do you consider reasonable the pilots received a non fault tolerant and non gracefully degraded aircraft after encountering ice particles disabling the illusory redundancy created by the design and "maintained" by the carrier and authorities?
Pilots are paid to work operating machines that give chances to them in the event of failures.
A subsystem (battery + charger) in a highly sophisticated and advanced plane presenting this consequences (threatening the program) with smoke, electrolyte spill (inside an electronic bay) fire (BOS), emergency landing (TAK) and evac, IMO is a SHAME.
A redundant and safe DC supply (charger + battery) is an "ancient subsystem" and failures like the ones occurred are unacceptable. Boeing, Yuasa or Thales grounded the Dreamliner creating a Nightmare for everybody involved with the issue.
Something is VERY WRONG. This is very basic: A DC supply (from gennies), a battery and a load (the plane consumption). Difficult to manage?
I hope for a charger issue. Hardware, software, whatever. And FAST!