Well for all those who like to see conspiracies under every stone, the crew of Flight 3047 left their autopilot on in known icing which is contrary to accepted practice that you must manually fly the plane so that you can feel problems developing.

When flaps ten were selected the aircraft pitched down and rolled left and then the pilots opened throttles to try and recover, but then the aircraft rolled violently right by 105 degrees and crashed in a flat spin.