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 - chronological order
Directed by: William A. Wellman
Starring: John Wayne, Lloyd Nolan, James Arness, Walter Abel
Continuity mistake: While the close-ups showed heavy ice build-up on the doomed plane, the long shots showed no ice at all.
Capt. Dooley: Tell them we're in a jam. Loosen up and lose some altitude. We're turning North West until we run out of gas.
Pilot: But if we go North West Captain, we'll fly right off the map. It says "unchartered" up that way.
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.