The fasten seatbelt chime is a standard part of commercial air travel, played over an aircraft cabin speaker system when crew switch the seatbelt sign on for takeoff, turbulence, or landing. Because almost every frequent flyer recognises it instantly, the sound has become a shorthand for flying in short-form video, memes, and comedy edits, where a single ding sound effect can establish an airplane setting without showing a plane at all. Its continued use comes from that shared familiarity and its clean, unmistakable tone.