Strike that -- that plane's engines are aft of the wings ... Couldn't have veered upward as claimed if a missile hit there.
Had to be a sudden loss of altitude -- like an internal blast would cause -- blew a hole in the fuselage belly in the luggage compartment maybe?
Or, it was a Klingon Bird of Prey that uncloaked to fire -- UFO theory

Which makes as much sense as ''bad fuel'' does
