Visible crew/equipment: When the search aircraft make their last fly-by over the Duke and his crew who are supposedly stranded on a frozen lake, parallel vehicle tracks are plainly visible, leading to their aircraft, and around it.
Island In The Sky (1953)
1 visible crew/equipment mistake
Directed by: William A. Wellman
Starring: John Wayne, Lloyd Nolan, James Arness, Walter Abel
Revealing mistake: When ice is shedding from the plane's wings, the chunks slowly slide forward and then down the leading edge. Loose chunks should have flown off rapidly to the rear due to the airflow.
Capt. Dooley: I'll shoot the first one of ya to leave camp. I'll aim for your legs. I may miss and hit ya in the back of the head. Either way serves ya right.
More questions & answers from Island In The Sky
Answer: Because after eating it as part of their rations throughout WWII, many ex-GIs swore to never touch the stuff.