Helipad Threshold

Object identifier of the corresponding runway threshold

Example: 9

Permanent state of feature (exceeding the AIRAC-cycle of 56 days)

Non-permanent closures or outages of less than 56 days are not adressed in the airport maping database but will be addressed via NOTAMS

Example: Open: 1

Height above/below the WGS-84 ellipsoid measured in meters

Geoidal undulation of threshold in reference to EGM 96 measured in meters

Unique identifier for this feature instance. Only unique per feature type

ICAO aerodrome location indicator

Example: NZCH