I completely agree with this part of your theory on why there was no communication from the aircraft. It is very possible that whatever was going on in that cockpit was far more important than making a call to ATC. Having lived through a crash I know the very LAST thing I thought of was making my mayday call. When things are going south fast and you have limited precise seconds to try to save your bacon, the last thing you are thinking of is communicating with someone on the ground who cant do a thing to help you in the moment.Learning2Fly wrote: Having said that, one of the pilots SPECULATED that the availability of oxygen at that altitude would
be scarce, and without an 02 mask available, the pilots MAY have been unable to respond as they
would have tried to resolve the immediate issue first (IE: via checklist) before calling ATC.
Smoke detectors? Warning lights? Apparently an electrical fire can spread quickly, and fill
the cabin with smoke very rapidly. Is it possible the pilot(s) did not have enough time to diagnose
the problem, and things escalated before they were able to communicate their trouble?
I have no real speculation as to what caused this 777 to disappear but I do believe you and your peers were possibly accurate in speculating that is why ATC was never contacted. Maybe they just didn't have time? Regardless of the situation they were in.