Revealing mistake: While the plane is almost upside down, papers and stuff fall inside, but one can notice that it's the actors throwing the papers, not gravity making them fall.
Airport '77 (1977)
1 revealing mistake - chronological order
Directed by: Jerry Jameson
Starring: Jack Lemmon, Joseph Cotten, Olivia de Havilland, Lee Grant, Brenda Vaccaro
Continuity mistake: In order to show the take-off of Stevens Corporation's 747, a scene from "Airport '75" is used - the plane's tail fin reads "CA" (for "Columbia Airlines") instead of showing the Stevens Corporate Logo.
Karen Wallace: Excuse me, I don't mean to intrude, but could you move your ass, dear?
Trivia: The navy radioman who first receives the emergency signal sent by Captain Gallagher (Jack Lemmon) is played by Chris Lemmon, Jack Lemmon's son.