Glossary
Airport Infrastructure
Touchdown Zone
Definition
The first 3,000 feet of a runway, measured from the threshold, which is the target area for aircraft to make initial contact during landing.
Related Terms
Threshold
The beginning of the portion of a runway available for landing. Marked with white stripes, it indicates the point where aircraft should touch down.
Runway
A defined rectangular area on an airport prepared for the takeoff and landing of aircraft. Runways are numbered based on their magnetic heading, divided by 10.
Landing
The phase of flight in which an aircraft descends and makes contact with the runway surface. Involves approach, flare, touchdown, and rollout to decelerate to taxi speed.