I think if you went back over the Twilight Zone canon, you would find considerable attention paid to airplanes. They seem to represent a mystery. I suppose the isolation of being off the ground, the passengers at the mercy of the fates. The lack of control from the ground. In this one an FAA representative comes to investigate the landing of a plane where the crew and passengers have totally disappeared. Nothing seems to make any sense until he comes up with a seemingly preposterous theory. Once he tests it out, the fun starts. The problem with this episode is that it's never clear why he is in the position he is and what exactly did happen a long time ago. In this incidence, I don't think the writers played fair with the viewer.