Deliberate mistake: When the inmates first leave their cells we see at least 2 that have white or light colored shirts on instead of prison blue.
Escape from Alcatraz (1979)
1 deliberate mistake - chronological order
Directed by: Don Siegel
Starring: Clint Eastwood, Patrick McGoohan, Roberts Blossom, Jack Thibeau
Visible crew/equipment: In the non-widescreen version, a hole in the ceiling and a microphone can be seen picking up the dialogue between Patrick McGoohan and Clint Eastwood in the warden's office.
Litmus: What's your name kid?
Charley Butts: Charley Butts.
Litmus: Charley's Butt? Hahahah, you got a pretty friggin' funny name kid.
Charley Butts: Oh yeah? What's yours?
Litmus: Al Capone.
More trivia for Escape from Alcatraz
Question: When Frank is delivering books to inmates' cells, he reaches D block, but a guard stops him, and tells him they are not allowed in those cells. Were books really disallowed in D block cells?
Answer: Those were the solitary confinement cells, with no light and no luxuries of any kind. So yes, they did not allow inmates on that block to have books.
This is inaccurate as a light in each cell was turned on at 6:30 every morning in solitary confinement at Alcatraz.