ED-99/DO-272 Definition: The remaining parts of a defined apron area that are not covered by Parking Stand Area features or Taxiway Element features.
AIXM 5.1.1 Definition: A defined area, on a land aerodrome, intended to accommodate aircraft for purposes of loading or unloading passengers, mail or cargo, fuelling, parking or maintenance.

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
	ApronElement	x	x	x	x	ApronElement[type!='PARKING'] Note: This covers all types of ApronElement except for those marked as PARKING.	urn:aero:airm:1.0.0:LogicalModel:Subjects:BaseInfrastructure:AerodromeInfrastructure:ApronElement
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	associatedApron.Apron.associatedAirportHeliport.AirportHeliport.locationIndicatorICAO	urn:aero:airm:1.0.0:LogicalModel:Subjects:BaseInfrastructure:AerodromeInfrastructure:Aerodrome@locationIndicatorICAO
9	status	x	x	x	x	availability.ApronAreaAvailability.operationalStatus	urn:aero:airm:1.0.0:LogicalModel:Subjects:BaseInfrastructure:AerodromeInfrastructure:ApronAreaAvailability@operationalStatus
10	vacc	x	x	x	x	extent.ElevatedSurface.verticalAccuracy	urn:aero:airm:1.0.0:LogicalModel:DataTypes:GeometryTypes:ThreeDimensionalPointType@verticalAccuracy
11	hacc	x	x	x	x	extent.ElevatedSurface.horizontalAccuracy	urn:aero:airm:1.0.0:LogicalModel:DataTypes:GeometryTypes:ThreeDimensionalSurfaceType@horizontalAccuracy
12	vres	x	x	x	x	extent.ElevatedSurface.verticalResolution	urn:aero:airm:1.0.0:LogicalModel:DataTypes:GeometryTypes:ThreeDimensionalCurveType@verticalResolution
13	hres	x	x	x	x	extent.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	pcn	x	x	x	x	surfaceProperties.SurfaceCharacteristics.classPCN AND surfaceProperties.SurfaceCharacteristics.pavementTypePCN AND surfaceProperties.SurfaceCharacteristics.pavementSubgradePCN AND surfaceProperties.SurfaceCharacteristics.maxTyrePressurePCN AND surfaceProperties.SurfaceCharacteristics.evaluationMethodPCN	urn:aero:airm:1.0.0:LogicalModel:Subjects:BaseInfrastructure:AerodromeInfrastructure:SurfaceCharacteristics@classPCN urn:aero:airm:1.0.0:LogicalModel:Subjects:BaseInfrastructure:AerodromeInfrastructure:SurfaceCharacteristics@pavementTypePCN urn:aero:airm:1.0.0:LogicalModel:Subjects:BaseInfrastructure:AerodromeInfrastructure:SurfaceCharacteristics@pavementSubgradePCN urn:aero:airm:1.0.0:LogicalModel:Subjects:BaseInfrastructure:AerodromeInfrastructure:SurfaceCharacteristics@maxTyrePressurePCN urn:aero:airm:1.0.0:LogicalModel:Subjects:BaseInfrastructure:AerodromeInfrastructure:SurfaceCharacteristics@evaluationMethodPCN
18	restacn		x			availability.ApronAreaAvailability.usage.ApronAreaUsage[type="FORBID"].selection.ConditionCombination.aircraft.AircraftCharacteristic.typeAircraftICAO	urn:aero:airm:1.0.0:LogicalModel:Subjects:Aircraft:AircraftType@icaoIdentifier
19	restacft			x	x	availability.ApronAreaAvailability.usage.ApronAreaUsage[type="FORBID"].selection.ConditionCombination.aircraft.AircraftCharacteristic.typeAircraftICAO	urn:aero:airm:1.0.0:LogicalModel:Subjects:Aircraft:AircraftType@icaoIdentifier
20	gsurftyp	x	x	x	x	surfaceProperties.SurfaceCharactersitics.composition	urn:aero:airm:1.0.0:LogicalModel:Subjects:BaseInfrastructure:AerodromeInfrastructure:SurfaceCharacteristics@composition
21	idapron	x	x	x	x	associatedApron.Apron.name	urn:aero:airm:1.0.0:LogicalModel:Subjects:BaseInfrastructure:AerodromeInfrastructure:Apron@name
22	aprontyp			x	x	type	urn:aero:airm:1.0.0:LogicalModel:Subjects:BaseInfrastructure:AerodromeInfrastructure:ApronElement@type
23	geopoly	x	x	x	x	extent.ElevatedSurface	urn:aero:airm:1.0.0:LogicalModel:Abstract:GeoEnabledEntity@surfaceExtent

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