departureclearance
nounUK /dɪˈpɑːtʃə ˈklɪərəns/
US /dɪˈpɑːrtʃər ˈklɪrəns/
Official permission for a plane or ship to leave.
The pilot waited for departure clearance before starting the engines.
RELATED WORDS
OTHER MEANINGS
2. The formal release of a person or group from a place or duty.
The soldiers received departure clearance after the mission ended.
3. A document or signal confirming that a vehicle may leave a terminal.
The captain showed the departure clearance to the harbor master.
4. The act of approving an aircraft's exit from controlled airspace.
Departure clearance was granted once the plane reached its assigned altitude.