http://www.airspacemag.com/history-of-flight/The-727-that-Vanished.html
Really? You can just get in the cockpit of a 727 and takeoff without clearance and then just vanish :-/ :-?

You have to consider this happened in a third world country. Also, think how hard it was to find the Air France flight in the Atlantic, or Steve Fossett's flight, and we knew about where to look. My honest opinion is that the un 727 qualified mechanic tried to fly the aircraft, and met his doom at sea, or perhaps in a remote part of the African plain or desert. Believe it or not, it is possible to not be found in this world.