The reason for the crash is a mystery. Technical errors have been closed out. Apparently the pilots flew by sight - in the evening. Further mystery is in conflicting accounts - the official version is that the plane veered off its flight path (along a valley between two mountain ranges) by 3 km, but some Hungarian airflight insiders claim that the plane flew along a different route, and flew 350 m under the minimum allowed flight height.

_{*Lunatic*, n.
One whose delusions are out of fashion.}