ED-99/DO-272 Definition: Polygonal structure of a defined vertical extent that is located within an area that extends from the edge(s) of the runway(s) to 90m from the runway centerline(s) and for all other parts of the aerodrome movement area(s), 50m from the edge(s) of the defined area(s).
AIXM 5.1.1 Definition: All fixed (whether temporary or permanent) and mobile objects, or parts thereof that extend above the surface of the Earth. Those vertical structures that are located on an area intended for the surface movement of aircraft or that extend above a defined surface intended to protect aircraft in flight are considered obstacles.

In order to have a complete correspondence the following extensions are needed:

AM: AIXM 5.1.1 extension for AMD

	ED-99/DO-272	A	B	C	D	AIXM 5.1.1	AIRM 1.0.0
	VerticalPolygonalStructure	x	x	x	x	VerticalStructure	urn:aero:airm:1.0.0:LogicalModel:Subjects:Common:Geospatial:VerticalStructure
1	stfeat			x	x	featureLifetime.gml:TimePeriod.gml:beginPosition	urn:aero:airm:1.0.0:LogicalModel:Abstract:TemporalEnabledEntity@startEntityLifetime
2	endfeat			x	x	featureLifetime.gml:TimePeriod.gml:endPosition	urn:aero:airm:1.0.0:LogicalModel:Abstract:TemporalEnabledEntity@endEntityLifetime
3	stvalid			x	x	validTime.gml:TimePeriod.gml:beginPosition	urn:aero:airm:1.0.0:LogicalModel:Abstract:TemporalEnabledEntity@startValidity
4	endvalid			x	x	validTime.gml:TimePeriod.gml:endPosition	urn:aero:airm:1.0.0:LogicalModel:Abstract:TemporalEnabledEntity@endValidity
5	interp			x	x	interpretation	urn:aero:airm:1.0.0:LogicalModel:Abstract:TemporalEnabledEntity@interpretation
6	feattype	x	x	x	x	Note: Can be implied
7	idnumber		x	x	x	identifier	urn:aero:airm:1.0.0:LogicalModel:Abstract:Entity@identifier
8	idarpt	x	x	x	x	QUERY= ObstacleArea[type='AREA3' and obstacle.VerticalStructure.name='.'].ownerAirport.AirportHeliport.locationIndicatorICAO	urn:aero:airm:1.0.0:LogicalModel:Subjects:BaseInfrastructure:AerodromeInfrastructure:Aerodrome@locationIndicatorICAO
9	plysttyp	x	x	x	x	type	urn:aero:airm:1.0.0:LogicalModel:Subjects:Common:Geospatial:VerticalStructure@type
10	vacc	x	x	x	x	part.VerticalStructurePart.horizontalProjection.VerticalStructurePartGeometry.linearExtent.ElevatedSurface.verticalAccuracy	urn:aero:airm:1.0.0:LogicalModel:DataTypes:GeometryTypes:ThreeDimensionalPointType@verticalAccuracy
11	hacc	x	x	x	x	part.VerticalStructurePart.horizontalProjection.VerticalStructurePartGeometry.linearExtent.ElevatedSurface.horizontalAccuracy	urn:aero:airm:1.0.0:LogicalModel:DataTypes:GeometryTypes:ThreeDimensionalSurfaceType@horizontalAccuracy
12	vres	x	x	x	x	part.VerticalStructurePart.horizontalProjection.VerticalStructurePartGeometry.linearExtent.ElevatedSurface.verticalResolution	urn:aero:airm:1.0.0:LogicalModel:DataTypes:GeometryTypes:ThreeDimensionalCurveType@verticalResolution
13	hres	x	x	x	x	part.VerticalStructurePart.horizontalProjection.VerticalStructurePartGeometry.linearExtent.ElevatedSurface.horizontalResolution	urn:aero:airm:1.0.0:LogicalModel:DataTypes:GeometryTypes:ThreeDimensionalPointType@horizontalResolution
14	source	x	x	x	x	source OR gmd:MD_Metadata.gmd:dataQualityInfo.gmd:lineage.gmd:LI_Lineage.gmd:processStep.gmd:LI_ProcessStep Note: Needs processor with a role set to "publisher".	urn:aero:airm:1.0.0:LogicalModel:Abstract:TemporalEnabledEntity@source
15	integr	x	x	x	x	integrity
16	revdate	x	x	x	x	revisionDate OR gmd:MD_Metadata.gmd:identificationInfo.gmd:MD_DataIdentification.gmd:citation.gmd:CI_Citation.gmd:date.gmd:CI_Date.gmd:date Note: also needs gmd:CI_Date.gmd:dateType.gmd:CI_DateTypeCode to be set to "revision"	urn:aero:airm:1.0.0:LogicalModel:Abstract:TemporalEnabledEntity@lastRevision
17	height	x	x	x	x	part.VerticalStructurePart.verticalExtent Note: In AIXM take the elevation and subtract local ground if the object is floating. Otherwise verticalExtent is equal to the height.	urn:aero:airm:1.0.0:LogicalModel:Subjects:Common:Geospatial:VerticalStructurePart@verticalExtent
18	elev	x	x	x	x	part.VerticalStructurePart.horizontalProjection.VerticalStructurePartGeometry.linearExtent.ElevatedSurface.elevation	urn:aero:airm:1.0.0:LogicalModel:Subjects:Common:Geospatial:VerticalStructurePart@topElevation
19	material	x	x	x	x	part.VerticalStructurePart.visibleMaterial	urn:aero:airm:1.0.0:LogicalModel:Subjects:Common:Geospatial:VerticalStructurePart@visibleMaterial
20	ident	x	x	x	x	name	urn:aero:airm:1.0.0:LogicalModel:Subjects:Common:Geospatial:VerticalStructure@name
21	geopoly	x	x	x	x	part.VerticalStructurePart.horizontalProjection.VerticalStructurePartGeometry.linearExtent.ElevatedSurface Note: AIXM divides it into VerticalStructureParts so a merge function will be required in AMDB	urn:aero:airm:1.0.0:LogicalModel:Abstract:GeoEnabledEntity@surfaceExtent

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