noun, noun or participle which takes 'suru', intransitive verb
takeoff and landing; departure and arrival (aircraft)
Used in aviation contexts for the combined operations of aircraft taking off and landing at an airport.
この空港では一日に何百回もの離発着が行われている。
Hundreds of takeoffs and landings are performed at this airport every day.
Takeoffs and landings were temporarily suspended due to bad weather.