Airport reference point
![Airport reference point of the defunct Berlin Tempelhof Airport](/Images/godic/202412/18/Airport_reference_point2718.jpg")
![Airport reference point of the defunct Berlin Tempelhof Airport](/Images/godic/202412/18/AirportReferencePoint22718.jpg")
An airport (or aerodrome) reference point (ARP) is the centre point of an airport, located at the geometric centre of all the usable runways. The ARP is computed as a weighted average of the end of runway coordinates.
Internationally, the rules governing the establishment of an Airport reference point are defined by ICAO Annex 14, and include: