AIRCRAFT CLASSIFICATION NUBER(ACN) PAVEMENT CLASSIFICATION NUMBER(PCN)
THE ICAO INTRODUCED THE ACN/PCN SYSTEM AS AMETHOD TO CLASSIFY PAVEMENT BEARING STRENGTH FOR AIRCRAFT WITH AN AUW OF MORE THAN 5700 kg.
ACN EXPRESSES THE RELATIVE EFFECT OF AN AIRCRAFT ON A PAVEMENT (RIGID OR FLEXIBLE) FOR A SPECIFIED STANDARD SUBGRADE CATEGORY.
PCN EXPRESSES THE BEARING STRENGTH OF A PAVEMENT (RIGID OR FLEXIBLE) FOR UNRESTRICTED OPERATIONS.
THE REPORTED PCN INDICATES THAT AN AIRCRAFT WITH AN ACN EQUAL TO OR LESS THAN THE REPORTED PCN CAN OPERATE ON THE PAVEMENT .
OCCASINAY MINOR OVERLOADING OPERATIONS CAN BE ALLOWED BY AIRPORT AUTHORITIES AS PER ICAO OVERLOAD CRITERIA.