Regarding the bearing strength of aprons, runways, and taxiways, the abbreviation PCN stands for…
ICAO Annex 14
Pavement classification number (PCN). A number expressing the bearing strength of a pavement for unrestricted operations.
2.6 Strength of pavements
2.6.1 The bearing strength of a pavement shall be determined.
2.6.2 The bearing strength of a pavement intended for aircraft of apron (ramp) mass greater than 5700 kg shall be made available using the aircraft classification number — pavement classification number (ACN-PCN) method by reporting all of the following information:
a) the pavement classification number (PCN);
b) pavement type for ACN-PCN determination;
c) subgrade strength category;
d) maximum allowable tire pressure category or maximum allowable tire pressure value; and
e) evaluation method.
Note — If necessary, PCNs may be published to an accuracy of one-tenth of a whole number.
Your Notes (not visible to others)