ACN–PCN (Aircraft Classification Number–Pavement Classification Number)
aircraft that has an ACN value equal to or less than the pavement's PCN value. The bearing strengths of pavements intended for aircraft of 12,500 lb maximum total weight authorized or less are reported as the maximum allowable weight and maximum allowable tire pressure. Values of PCNs for runways and other aircraft runways are published in the relevant aerodrome publications. A method of representing PCN is indicated in the illustration.