Yeh I'm still not sold on how the plane has flown for 7hrs after an event so catestrophic and intense that it has disabled a good deal of the communications and reporting systems, incapacited everyone on board and disabled the autopilot (sending the plane to the reported 45,000 before stalling, somehow recovering and possibly even relighting the engines (which would require someone to apply the igniters and manage the turbine spool back to satisfactory operations from a air start) and then somehow re-engage the autopilot which took the plane back to FL35 and flew it on like a ghost ship for 7hrs...
and with some sheer stroke of tragic circumstance, whatever made the atmosphere in the aircraft so toxic that life was unsupportable within what appears to be a very short period of time, possibly less than 30mins has died off to a point where the aircraft was completely airworthy like nothing had happened.
OR there was no system failures -- it was a takeover , and the climb was a result of a wrestle in the cockpit media has given the sense that the decent back to 27 was like dodging , wherein it could clearly indicate that whoever wanted to take control , knew the plane was way above it cert ceiling as far as altitude goes (its 43 for the triple 7),and was approaching stall and knew he had better dive or he would stall o OR the stall had to began.
the leveling out at 27 could mean that a skilled flyer was able to stablize and recover from a stall and you and I know that stalling an aircraft cause your exceeding limit , just in and of itself. could reslut in total destruction if the climb was not immed haulted
Only way out of a stall D I V E ! and fast!
And if you think about it falling 2.5 miles, as a result of stall in those circumstances sounds about right