Name	Data Type	Definition
designator	CodeAirportHeliportDesignatorType	A designator for an airport/heliport.
name	TextNameType	The primary official name of an airport/heliport as designated by an appropriate authority.
locationIndicatorICAO	CodeICAOType	The International Civil Aviation Organization (ICAO) location indicator of the airport/heliport, as listed in ICAO DOC 7910.
designatorIATA	CodeIATAType	The identifier that is assigned to a location in accordance with rules (resolution 767) governed by the International Air Transport Association (IATA).
type	CodeAirportHeliportType	The type of airport/heliport. For example, aerodrome only, combined aerodrome/heliport or simple landing site.
certifiedICAO	CodeYesNoType	Indicating that the airport/heliport is certified according to the International Civil Aviation Organization (ICAO) rules.
privateUse	CodeYesNoType	An airport or heliport not open for the public. Only for the use of the owners.
controlType	CodeMilitaryOperationsType	The primary organization type in terms of civil or military, which controls the airport/heliport.
fieldElevation	ValDistanceVerticalType	The vertical distance above Mean Sea Level (MSL) of the highest point of the landing area.
fieldElevationAccuracy	ValDistanceVerticalType	The vertical distance from the stated elevation within which there is a defined confidence of the true position falling.
verticalDatum	CodeVerticalDatumType	A reference surface with respect to which elevations and/or depths are specified at the airport/heliport.
magneticVariation	ValMagneticVariationType	The angular difference between True North and Magnetic North measured at a given position and date.
magneticVariationAccuracy	ValAngleType	The accuracy of the Magnetic Variation.
dateMagneticVariation	DateYearType	The date on which an associated magnetic variation was measured at the airport/heliport.
magneticVariationChange	ValMagneticVariationChangeType	The annual rate of change of the magnetic variation at a specified airport/heliport.
referenceTemperature	ValTemperatureType	The monthly mean of the daily maximum temperatures for the hottest month of the year at an airport/heliport.
altimeterCheckLocation	CodeYesNoType	The availability of a point or area designated at an airport/heliport where the checking of an altimeter system can be accomplished.
secondaryPowerSupply	CodeYesNoType	The availability of emergency power supply for the airport/heliport.
windDirectionIndicator	CodeYesNoType	The availability of a device, at the airport/heliport, that indicates the direction and the intensity of the wind.
landingDirectionIndicator	CodeYesNoType	The availability of a device that indicates visually the direction currently designated for landing and for take-off.
transitionAltitude	ValDistanceVerticalType	The altitude at or below which the vertical position of an aircraft is controlled by reference to altitudes at the airport/heliport.
transitionLevel	ValFLType	The lowest flight level available for use above the transition altitude at the airport/heliport.
lowestTemperature	ValTemperatureType	The monthly mean of the daily minimum temperatures for the coldest month of the year at an airport/heliport.
abandoned	CodeYesNoType	An indicator that the airport/heliport is no longer in operational use, but it's infrastructure is still present and visible from the air.
certificationDate	DateType	The date when the airport/heliport certification has been issued by the supervising authority.
certificationExpirationDate	DateType	The date when the airport/heliport certification will become invalid.

Association	Multiplicity	Role	To	Role description
isContactedAt	0..*	contact	ContactInformation	Contact details for the AirportHeliport (phone, postal address, e-mail, etc.)
hasAnnotations	0..*	annotation	Note
hasReferencePoint	0..1	ARP	ElevatedPoint	Airport reference point.
utilizes	0..*	altimeterSource	AltimeterSource	The altimeter source used by the Airport.
isContaminated	0..*	contaminant	AirportHeliportContamination	Overall contamination of an airport.
serves	0..*	servedCity	City	The location that is served by the airport.
isUnderResponsibilityOf	0..1	responsibleOrganisation	OrganisationAuthority
hasBoundaryForAviationPurposes	0..1	aviationBoundary	ElevatedSurface	Boundary of the airport/heliport used for aviation operations.
isOperationalBy	0..*	availability	AirportHeliportAvailability	Information about the operational status of the airport/heliport.

From	Association	Multiplicity	Role	To	Role description
FlightRoutingElementChoice		0..1	airportHeliportElement	Desc= AirportHeliport which is impacted by a flight restriction.
ObstacleAreaOrigin	isAirport	0..1	ownerAirport	The Airport for which the Obstacle Area has been defined.
Unit	isLocatedAt	0..1	airportLocation	The Airport or Heliport where the Unit is located.
AirportHeliportCollocation	isHostedBy	0..1	hostAirport	The host Airport.
AirportGroundService	isProvidedAt	0..*	airportHeliport	The airport/heliport where the service is provided.
FlightConditionElementChoice		0..1	airportHeliportCondition	A condition based on an AirportHeliport.
DesignatedPoint	isAssociatedWith	0..1	airportHeliport
AirportHeliportCollocation	hosts	0..1	dependentAirport	The airport that is colocated at the host Airport.
RadarSystem	isSituatedAt	0..1	airportHeliport	The Airport or Heliport on which the equipment is located.
RulesProcedures	appliesAt	0..*	affectedLocation	Airport/Heliport where the rule or procedure is effective.
InformationService	concerns	0..*	clientAirport	The Airport for which the information service is provided.
SafeAltitudeArea	isDefinedAt	0..*	location	Indicates the localisation of the safe altitudes area at a specific airport
Runway	isSituatedAt	0..1	associatedAirportHeliport	The Airport the Runway is associated with.
AirTrafficControlService	controlsAirspaceOf	0..*	clientAirport	The Airport/Heliport around which the air traffic is controlled.
GroundTrafficControlService	controls	0..1	clientAirport	The Airport/Heliport where the surface traffic control service is provided.
Apron	isSituatedAt	0..1	associatedAirportHeliport
NavigationSystemCheckpoint	establishedAt	0..1	airportHeliport
TouchDownLiftOff	isSituatedAt	0..1	associatedAirportHeliport	The airport the TouchDownLiftOff zone is associated with.
AeronauticalGroundLight	markingTheSiteOf	0..1	aerodromeBeacon	The airport/heliport in the area of which the light is situated.
SignificantPoint		0..1	airportReferencePoint	the point designated as the center of the airport.
Navaid	usedForHomingAt	0..*	servedAirport	The AirportHeliport served by the Navaid.
SurveyControlPoint	isSituatedAt	0..1	associatedAirportHeliport	The airport associated with the survey control point.
AirportHotSpot	isLocatedAt	0..1	affectedAirport	The AirportHeliport where the hot spot has been identified.
NonMovementArea	isSituatedAt	0..1	associatedAirportHeliport	The airport the non-movement area is associated with.
Taxiway	isSituatedAt	0..1	associatedAirportHeliport	The airport the taxiway is associated with.
Road	isSituatedAt	0..1	associatedAirport	The airport the road is associated with.
WorkArea	isSituatedAt	0..1	associatedAirportHeliport	The airport the work area is associated with.
Procedure	services	0..*	airportHeliport

1 - AirportHeliport , 1 - Approach Procedure Overview , 1 - Apron , 1 - GroundLight , 1 - Navaids , 1 - RulesProcedures , 1 - Runway , 1 - SID , 1 - STAR , 1 - Significant Points , 1 - Surface Contamination , 1 - Surveillance System , 1 - TLOF , 1 - Taxiway , 1- Minimum and Emergency Safe Altitude , 2 - AirportHeliport Association , 2 - Designated Point , 2 - Flight restrictions - conditions , 2 - Unit , 3 - Airport Ground Services , 3 - AirportHeliport Availability , 3 - Flight restriction - routings , 3 - Obstacle Areas , 3 - Roads , 4 - Information Service , 5 - Air Traffic Control Services , 5 - Navigation System Checkpoint