Runway Threshold

Layer: runwaythreshold
Geometry: Point
Feature type: 2

Note that a runway end may not neccesarily have a threshold, usually if that end is not used for takeoffs or landings, but this is a very rare case

If the runway has a displaced area where landing operations may not occur, a second threshold is placed at the end of this area, and marked as a displaced threshold. This displaced threshold will be at the intersection of the RunwayElement part of the runway and the DisplacedArea part.

The threshold at the end of a runway as a whole will always be a non-displaced threshold (Except where no threshold exists for that end)

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Properties

Prop	Type
idthr	string Object Identifier (not unique) Note that the format is not garunteed to include leading zeros, this value will match the official name of the threshold which should match the physical markings Example: `02`
status	Status 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`
tdze	number Touchdown zone `ICAO Annex 14, Chapter 1.1` orthometric elevation in meters Example: `37.49`
tdzslope	number Touchdown zone longitudinal slope (slope of 1/3 of the runway length from threshold or first 1000 meters for runways longer than 3000 meters, correspnding to the threshold location). Encoded as a percent value Example: `0.60`
brngtrue	number True bearing corresponding to the landing direction `ICAO Annex 14, Chapter 3.1.12` measured in degrees Example: `40.00`
brngmag	number Magnetic bearing corresponding to the threshold location valid at the day of data generation measured in degrees Example: `16.00`
rwyslope	number Runway slope corresponding to landing direction Encoded as a percent value Example: `-0.28`
tora	number Take-off run available `ICAO Annex 14, Chapter 1.1` measured in meters Example: `3288.00`
toda	number Take-off distance available `ICAO Annex 14, Chapter 1.1` measured in meters Example: `3548.00`
asda	number Accelerate-stop distance available `ICAO Annex 14, Chapter 1.1` measured in meters Example: `3288.00`
lda	number Landing distance available `ICAO Annex 14, Chapter 1.1` measured in meters
vasis	PapiVasi Vertical guidance lighting system available Example: `Papi: 1`
cat	LandingCategory Precision approach guidance system available Example: `Cat1: 1`
ellipse	number Height above/below the `WGS-84` ellipsoid measured in meters
geound	number Geoidal undulation of threshold in reference to `EGM 96` measured in meters
thrtype	ThresholdType Whether this threshold is displaced or not Example: `DisplacedThreshold: 1`
id	number Unique identifier for this feature instance. Only unique per feature type
feattype	FeatureType.RunwayThreshold = 2
idarpt	string ICAO aerodrome location indicator Example: `NZCH`