Definition
An authorization issued by an air carrier's dispatcher (under 14 CFR Part 121) certifying that a specific flight may depart, based on a review of weather, aircraft airworthiness, fuel, weight and balance, crew qualifications, and operating conditions. The flight release is signed by both the dispatcher and the pilot in command, who share joint responsibility for the operational control of the flight.
Plain English
A formal sign-off from the airline's dispatch office saying a flight is cleared to go. It confirms the dispatcher and the captain have both checked the weather, the aircraft, the fuel, and the crew, and they agree the flight can be conducted safely and legally.
Context Anchor
Seen in airline, charter, and other commercial operations before departure, usually as part of the flight planning or operations paperwork.
Derivation
From 'release' — to let go or set free. The flight is 'released' from the dispatch office to begin the operation, meaning dispatch has cleared it for departure.
Why Pilots Care
It provides the legal and operational approval the pilot in command needs before accepting the flight.
Intuition Check
Do not read “release” as a casual permission or a maintenance sign-off. Here it means a formal authorization for a particular flight to depart.
Example Sentence 1
The captain reviewed the flight release with the dispatcher, confirming the fuel load and the alternate airport before signing it.
Example Sentence 2
Dispatch issued an updated flight release after the weather improved.