Continuity mistake: Burt Lancaster is sitting in his car at the end, and he asks the tower if he can listen to the radio traffic for the incoming plane that's landing. The tower replies "Sure, it's on frequency 117.1". Burt then tunes the dial on his receiver to 171, not 117. 170 is blatantly written under the dial in bold type.

Airport (1970)
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Directed by: Henry Hathaway, George Seaton
Starring: Burt Lancaster, Dean Martin, George Kennedy, Jacqueline Bisset, Jean Seberg
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The dialogue seems hopelesslyoutdated. It was probably outdated even in 1970. But the attention to aircraft and airport operations give the film both authenticity and nostalgia appeal. Subsequent disaster films never really duplicated this. Arthur Hailey also deserves credit for raising the topic of mental illness among combat veterans. This had also been a theme in Zero Hour! in which the traumatized veteran became the hero.
Ada Quonsett: My late husband taught me to be thorough. He was a teacher of geometry. He always said: "You must consider every angle."
Tanya Livingston: My late husband was a lawyer, and he always said: "Watch out for sweet-looking innocent, little old ladies." I'm beginning to understand what he meant.
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Chosen answer: Patroni isn't referring to the cabin pressure, he says to "pressurize the manifold" - part of the engine start procedure of a Boeing 707, which I believe involves a ground crew pumping gas (nitrogen?) from a cart into the intake manifold.
Sierra1 ★
Pressurize - as in the manifold, to turn on bleed air from the APU - on board Auxiliary Power Unit - a small jet engine that provides electrical and pneumatic air to operate aircraft systems including starting engines.