Definition
The material that makes up the usable landing and takeoff surface of a runway, such as concrete, asphalt, gravel, turf, dirt, or water. Chart Supplements list runway surface using standard codes so pilots know what they will be operating on before arrival.
Plain English
What the runway is actually made of -- paved, gravel, grass, dirt, or water -- and what shape it is in.
Context Anchor
Seen in Chart Supplements and airport information, usually with runway length, lighting, and other runway details.
Why Pilots Care
Surface type affects braking, tire wear, required takeoff and landing distances, and handling in wet or soft conditions.
Intuition Check
Do not read runway surface as just the visible top of the runway. In airport information, it specifically tells you the kind of material or landing surface the aircraft will use.
Example Sentence 1
Before flying into the backcountry strip, she checked the Chart Supplement and confirmed the runway surface was turf in good condition.
Example Sentence 2
A turf runway surface can become soft after rain and may require a longer takeoff roll.