Plot hole: Hogan's men steal the motor from the silent plane. When Klink and Burkhalter inspect the plane, Burkhalter doesn't notice the engine missing. Later Klink doesn't notice the fact that it has been put back. This is totally impossible for two reasons: Firstly, if a propeller airplane misses its motor, there is no place to mount the propeller. Secondly, when we get to see the whole plane, it becomes obvious that it has an open engine cowling which leaves the motor exposed to be cooled by the airstream. The propeller issue aside, if there is enough light to see the hand in front of your eyes, it is impossible to miss either the presence or the absence of an engine inside that kind of cowling. Add to this the fact that both Klink and Burkhalter are Luftwaffe (Air Force) officers and therefore by trade have some experience with airplanes, the whole thing becomes even more ridiculous.
Hogan's Heroes (1965)
1 plot hole in Psychic Kommandant
Starring: Bob Crane, John Banner, Robert Clary, Werner Klemperer
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Trivia: During WW2 Robert Clary, who played Louis LeBeau, had been imprisoned at Drancy internment camp in France, and at Buchenwald Nazi concentration camp where he was tattooed with the number "A5714." He was the youngest of 14 children. Twelve members of his immediate family were sent to Auschwitz, and perished.
Question: What exactly is the "cooler"?
Answer: It's a solitary cell. Steve McQueen, star of 'The Great Escape' is known as the 'Cooler King'.