Place it just before the key reveal in an aviation or travel edit, then follow it with a bell ding to confirm the new plan, or cut to a classic error sound when the plan goes wrong instead.
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This is a short, roughly two-second repetitive electronic chime from a Boeing 717 cockpit, sounded when the jet nears the altitude chosen by its crew. It feels sharp and urgent, creating a sudden sense of focus and a need to pay attention without sounding harsh. The 717 entered service in 1999, and enthusiasts later isolated its altitude prompt for simulator clips and aviation edits.