Airport announcement endings are a staple of public address systems in terminals around the world, where a short tone marks the close of a boarding, delay, or safety message. Because the format is so standardised, the sound is instantly recognisable even without words, which is why editors reuse it far beyond real airports. On soundboards and in short videos it has become a shorthand for travel, waiting, and official finality, often used to close a parody announcement or to signal that a scene set in an airport has finished.