Interesting... I have no theories on any of this. Though, as this example shows as well, many aircraft have vanished without a trace. Thinking about Flt 739; it used to make me a bit nervous just being in a maintenance hangar with Connies or DC-6's, Etc. smelling all that gasoline... I can barely see how anyone could figure out the cockpit of a Connie enough to fly one anyway; think it must have been designed by Rube Goldberg...