Coding guidelines
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Some specific obstacles, such as an ILS glide path antenna, may be located in the close vicinity of a runway due to operational needs, on condition that they have the lowest possible physical strength.
A dedicated attribute (VerticalStructurePart.frangible) allows coding the information that the obstacle is 'frangible', which is an operationally significant data element.
Coding example
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Navaid as Obstacle (frangible)
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<!-- NAVAID OBSTACLE. Area 2a RWY 09L/27R and Area 3 (Glidepath) --> <message:hasMember> <aixm:VerticalStructure gml:id="uuid.c9bc6ea4-2b5e-4a71-af8a-eec2e4ff3dc3"> <gml:identifier codeSpace="urn:uuid:">c9bc6ea4-2b5e-4a71-af8a-eec2e4ff3dc3</gml:identifier> ... <aixm:name>OBS-EADD-1005 (GP 27R)</aixm:name> <aixm:type>NAVAID</aixm:type> ... <aixm:part> <aixm:VerticalStructurePart gml:id="vsp00013-1"> <aixm:verticalExtent uom="M">5.0</aixm:verticalExtent> <aixm:verticalExtentAccuracy uom="M">0.5</aixm:verticalExtentAccuracy> <aixm:type>NAVAID</aixm:type> <aixm:frangible>YES</aixm:frangible> <aixm:horizontalProjection_location> <aixm:ElevatedPoint srsName="urn:ogc:def:crs:EPSG::4326" gml:id="ep00013-1"> <gml:pos>52.378444 -31.926778</gml:pos> <aixm:horizontalAccuracy uom="M">0.5</aixm:horizontalAccuracy> <aixm:elevation uom="M">35.0</aixm:elevation> <aixm:verticalDatum>EGM_96</aixm:verticalDatum> <aixm:verticalAccuracy uom="M">0.5</aixm:verticalAccuracy> </aixm:ElevatedPoint> </aixm:horizontalProjection_location> <aixm:lighting> <aixm:LightElement gml:id="le00013-1"> <aixm:colour>RED</aixm:colour> </aixm:LightElement> </aixm:lighting> </aixm:VerticalStructurePart> </aixm:part> <aixm:hostedNavaidEquipment xlink:href="urn:uuid:4c46c5be-b033-4673-ac70-48a5d72793d2" xlink:title="Glidepath 27R"/> </aixm:VerticalStructureTimeSlice> </aixm:timeSlice> </aixm:VerticalStructure> |
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