@PJ2
Originally Posted by PJ2
The DFDR is powered by the AC2 bus which would be lost in the Emergency Electrical Configuration, (loss of both generators). I believe the CVR is similarly powered.
A320 CVR was recording Sully's cockpit conversation during their dual flameout and Hudson ditching. They were under APU, but there is no precision about FDR data. It should be the same for A330.
S~
Olivier