Definition

Pavement Classification Number (PCN) is a number that expresses the load-carrying capacity of a pavement for unrestricted operations.

Source: FAA AC 150/5335-5

Description

PCN is an International Civil Aviation Organisation (ICAO) standard used in combination with the Aircraft Classification Number (ACN) to indicate the strength of a runway, taxiway or apron. This helps to ensure that they are not subjected to excessive wear and tear, thus prolonging their usable life.

The PCN is the ACN of the most damaging aircraft that can use the pavement on a regular basis (regular being defined by the operator). The PCN values are published in the Aeronautical Information Publications (AIPs), part AD (aerodromes).