- A pavement structure that maintains intimate contact with and distributes loads to the subgrade and depends on aggregate interlock, particle friction, and cohesion for stability (ICAO). The term pavement refers to operating surfaces, such as runways, taxiways, aprons, and hardstandings. See pavement structure.
Aviation dictionary. 2014.
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pavement classification number — A number expressing the bearing strength of a pavement for unrestricted operation (ICAO). PCNs are calculated in terms of a standard single wheel load. The values of PCNs for runways and other operating areas are published in relevant aerodrome… … Aviation dictionary
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