Regarding loss of the CVR/FDRs on the S-92:
1) Loss of two main generators, > Correction: FDR is on the battery bus
2) G-switch was tripped,
3) Immersion switch was tripped,
4) No APU generator. > Correction: FDR is on the battery bus
#3 can be ruled out.
#1 seems likely if mains overheated, mgb slowed dramatically, or mgb siezed. >Correction: Overheated main gens should have no effect
#2 seems unlikely unless mgb siezed catastrophically.
#4 is a mystery; APU should've been turned on with loss of mgb pressure. >Correction: APU gen should have no effect
Last edited by ArmchairExpert; 31st Mar 2009 at 00:28.
Reason: Error correction...