Description: A node located at the aerodrome or heliport reference point. An aerodrome or heliport reference point is the designated geographical location of an aerodrome, heliport or landing location. An aerodrome reference point shall be established for an aerodrome. A heliport reference point shall be established for a heliport or a landing location not collocated with an aerodrome. The aerodrome or heliport reference point shall be located near the initial or planned geometric centre of the aerodrome, heliport or landing location and shall normally remain where first established. An aerodrome is a defined area on land or water (including any buildings, installations and equipment) intended to be used either wholly or in part for the arrival, departure and surface movement of aircraft. A heliport is an aerodrome or a defined area on a structure intended to be used wholly or in part for the arrival, departure and surface movement of helicopters. A landing location is a marked or unmarked area that has the same physical characteristics as a visual heliport final approach and take-off area (FATO). The attribute "code_type" distinguishes aerodromes 'AD' from heliports 'HP' but also markes aerodromes containing heliports 'AH'. The aerodrome elevation is the vertical distance between the highest point of the landing area of an aerodrome and mean sea level and is the combination of the attributes "val_elev" (this is the value of the field eleveation itself), "uom_dist_ver" (which is the unit of measurement) and the "txt_ver_datum" (either 'ADRIA' meaning above mean sea level based on Adria or 'OTHER:AGM08' which is the elevation above the Austrian Geoid Model 2008). This dataset covers Austrian territory only.
8, 46, 18, 49.
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