It is certainly puzzling. Let me look for the article I read that was interesting.
Thank you!
I think there was an attempt to hijack the thing and use it ala 9-11. Hijackers got the transponders and other tracking devices shut off, maybe got the plane headed where they wanted and were probably overcome by passengers and/or crew, who took the hijackers-and the plane down-also like 9-11. I think it is somehere in the ocean where they were last seen/heard/tracked-someone had to have seen that plane loosing altitude, maybe a fisherman on some godforsaken island.