flightclearance
nounUK /ˈflaɪtˌklɪərəns/
US /ˈflaɪtˌklɪrəns/
Permission for a plane to fly or land.
The pilot waited for flight clearance before taking off.
RELATED WORDS
OTHER MEANINGS
2. Official permission for an aircraft to enter a country's airspace.
The jet needed flight clearance to cross the border.
3. The height of an aircraft above the ground or obstacles.
The crew checked the flight clearance over the mountains.
4. Approval for a specific flight plan or route.
The airline filed for flight clearance on the new route.