Braking action

Braking action in aviation is a description of how easily an aircraft can stop after landing on a runway. Either pilots or airport management can report the braking action according to the Federal Aviation Administration of the United States.

When reporting braking action, any of the following terms may be used: Good; Medium (medium used to be known as Fair, though Fair is still in use in the US); Poor; Nil - bad or no braking action. If an air traffic controller receives a braking action report worse than good, an advisory must be included in the Automatic Terminal Information Service ("Braking Action Advisories are in effect").