Zombie Planes... apparently are being ruled as a possible cause for Flight 370's disappearance.
though further into the story the writer explains that a possible cabin depressurization knocked out or killed the passengers or crew. The one question with this theory in my mind is that if the aircraft depressurized, how come the pilots did not put on the quick donning mask? Its possible if the airplane is found all the questions can/ will be answered, it could have been a hijacking or pilot caused crash, just to many variables to figure out. Hopefully The plane will turn up somewhere with all crew and passengers alive and well.