Airport reference point
Encyclopedia
An airport reference point (ARP) is the notion
al centre point of an airport
, located at the geometric centre of all the usable runway
s, and its height is determined by the aeronautical authorities of the country. Its height is usually one of the most elevated point of the runways in use or one of the lowest points.
The ARP is used as the reference to the altitude
for the airport obstacle limitation surfaces.
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al centre point of an airport
Airport
An airport is a location where aircraft such as fixed-wing aircraft, helicopters, and blimps take off and land. Aircraft may be stored or maintained at an airport...
, located at the geometric centre of all the usable runway
Runway
According to ICAO a runway is a "defined rectangular area on a land aerodrome prepared for the landing and take-off of aircraft." Runways may be a man-made surface or a natural surface .- Orientation and dimensions :Runways are named by a number between 01 and 36, which is generally one tenth...
s, and its height is determined by the aeronautical authorities of the country. Its height is usually one of the most elevated point of the runways in use or one of the lowest points.
The ARP is used as the reference to the altitude
Altitude
Altitude or height is defined based on the context in which it is used . As a general definition, altitude is a distance measurement, usually in the vertical or "up" direction, between a reference datum and a point or object. The reference datum also often varies according to the context...
for the airport obstacle limitation surfaces.