ED-99/DO-272 Definition: Designated part of a surface movement area where a specific frequency is required by air traffic control or ground control.
AIXM 5.1.1 Definition: A kind of service that provides control and separation services, to aircraft at the airport.

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

AMGen: AIXM general extension for AMD

The FrequencyArea mapping is a difficult mapping case. The most correct mapping is to use GroundTrafficControlService and RadioCommunicationChannel. At first glance this seems less logical than using RadioFrqeuencyArea as the root of the mapping. However, the RadioFrequencyArea was intended to provide radio signal coverage limitations for navaids and ATC frequencies, not to designate the area in which a particular frequency has to be used. The AIXM Service concept was intended for that.

	ED-99/DO-272	A	B	C	D	AIXM 5.1.1	AIRM 1.0.0
	FrequencyArea	x	x	x	x	GroundTrafficControlService	urn:aero:airm:1.0.0:LogicalModel:Subjects:Stakeholders:BusinessService:GroundTrafficControlService
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	clientAirport.AirportHeliport.locationIndicatorICAO	urn:aero:airm:1.0.0:LogicalModel:Subjects:BaseInfrastructure:AerodromeInfrastructure:Aerodrome@locationIndicatorICAO
9	hacc	x	x	x	x	extent.Surface.horizontalAccuracy	urn:aero:airm:1.0.0:LogicalModel:DataTypes:GeometryTypes:ThreeDimensionalSurfaceType@horizontalAccuracy
10	hres	x	x	x	x	extent.Surface.horizontalResolution	urn:aero:airm:1.0.0:LogicalModel:DataTypes:GeometryTypes:ThreeDimensionalPointType@horizontalResolution
11	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
12	integr	x	x	x	x	integrity
13	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
14	frq	x	x	x	x	uses.RadioCommunicationChannel.frequencyTransmission Note: This should be used in preference to uses.RadioCommunicationChannel.frequencyReception	urn:aero:airm:1.0.0:LogicalModel:Subjects:Stakeholders:BusinessService:RadioCommunicationChannel@frequencyTransmission
15	station	x	x	x	x	name	urn:aero:airm:1.0.0:LogicalModel:Subjects:Stakeholders:BusinessService:Service@name
16	geopoly	x	x	x	x	extent.Surface	urn:aero:airm:1.0.0:LogicalModel:Abstract:GeoEnabledEntity@surfaceExtent

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