Zero Hour screenplay writer Arthur Hailey went on to write the popular 1968 novel, Airport, which revisited the air disaster genre and led to a film franchise that was also spoofed by Airplane! and its own sequel.
Side-by-side comparison: Zero Hour! (1957) Vs Airplane! (1980)
The brilliance was using actors, who primarily played serious roles, especially Leslie Nielsen.
Now you can’t watch him in his earlier serious roles without laughing out loud.