Originally Posted by
212man
Nagging question for 139 experts - how was the FDR recording the flight parameters after the power was cut? I can imagine it was powered up immediately after the gangbar use, but what about the data?
Not sure this counts as “expertise“ 212man, but the gang bar cuts all the electrics for pretty much everything that the pilots care about, except the engines. But the aux batt is still supplying power to the CMC and recording data until physically disconnected. It‘s just the BATT BUS that is offline.
The overwrite of the CVR is a gem. Malpractice by both pilots and managers in this regard needs some serious attention and penalties by authorities, including those well North of Nigeria.
I think the referred to IMC conditions means something less than VMC and short of being in cloud. Or they would all be dead.