Erratum: He’s not a “flight engineer,” there is no such position on a 777. He was an aviation/avionics engineer on his way to Beijing to take care of an Air Malaysia jet, I believe. An engineer, not a “flight engineer.”
The part that seems to allude people: Radar does not require ANY electronics on the aircraft to be operative, so where are the radar tapes showing the tracking? Both civil and military systems track aircraft. Where is that data? It does exist, guaranteed.
“He’s not a “flight engineer,” there is no such position on a 777.”
Of course. I know you knew that.