Wheels up

Definition

Departure order for aircraft, literally when landing gear leaves the ground. Metaphorically, the moment commitment becomes irrevocable and you'd better have brought everything you need.

Example Usage

Wheels up in thirty minutes—get your gear loaded NOW.

Origin

Aviation and military air operations, mid-20th century

Fun Fact

Also used as a notification for all military operations, not just aviation.

Source: Military aviation terminology

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🎖️ Military / Defense

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