[Dead Dog]

Then the stick shaker and stick pusher activated several times before the airplane entered an aerodynamic stall.

Well now...that is interesting. Coffin Corner (or at least one edge of it) at Service Ceiling. High Altitude, high subsonic stuff is just theory to me...but this seems odd..still. Absolute ceiling, sure, Service Ceiling...I don't know.

[Robert A Cook PE]

Yeah - That caught my eye also: The flight (stall and control) problems happened BEFORE the engines stalled out.

Which doesn't make sense.