Originally Posted by
Capt Fathom
Could you explain why the crew didn’t commence an emergency descent at the first sign of decompression?
The pilots would be suddenly subjected to multiple serious failures, including possibly all of the following, blank flight screens, unreliable instruments, disconnection of autopilot/autothrottle, Left AC Bus, No comms, and to top it all a decompression going on in the background, to which there may have been no warning due L AIMS/EICAS failure.
By the time they had made the turn back to Penang they were going hypoxic, having now donned their masks but getting no O2 they didn’t accomplish any emergency descent.
Not the usual scenario you might practice in the Sim !