Name	Data Type	Definition
designator	CodeAirportHeliportDesignatorType	A coded designator for an Aerodrome/Heliport. The rules according to which this identifier should be formed are as follows: 1. If the AD/HP has an ICAO four letter location indicator, then this one will become the CODE_ID for the Aerodrome/Heliport; 2. If the AD/HP does not have an ICAO four letter location indicator, but it has an IATA three letter code, then this one will become the CODE_ID for the Aerodrome/Heliport; 3. If the AD/HP has neither an ICAO four letter location indicator nor an IATA three letter code, then an artificial generated code will be used. This will contain a group of letters and a number. The group of letters could be the 2 letter code of the State being responsible for the Aerodrome/Heliport and the number could be an integer between 0001 and 9999.
name	TextNameType	The primary official name of an aerodrome as designated by an appropriate authority.
locationIndicatorICAO	CodeICAOType	The four letter ICAO location indicator of the aerodrome/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	A code specifying the type of aerodrome. For example, aerodrome only, combined aerodrome/heliport or simple landing site.
certifiedICAO	CodeYesNoType	Indicating that the airport is certified according to the ICAO rules.
privateUse	CodeYesNoType	An aerodrome 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.
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.
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 in angle degrees.
dateMagneticVariation	DateYearType	The date on which the magnetic variation had this value.
magneticVariationChange	ValMagneticVariationChangeType	The annual rate of change of the magnetic variation.
referenceTemperature	ValTemperatureType	The monthly mean of the daily maximum temperatures for the hottest month of the year at an aerodrome.
altimeterCheckLocation	CodeYesNoType	The availability of a point or area designated at an aerodrome 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 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.
transitionLevel	ValFLType	The lowest flight level available for use above the transition altitude.
lowestTemperature	ValTemperatureType	The mean lowest temperature of the coldest month of the year.
abandoned	CodeYesNoType	Indicating that the airport 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 certification has been issued by the supervising authority.
certificationExpirationDate	DateType	The date when the airport certification will become invalid.

Association	Multiplicity	Role	To	Role description
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	The Organisation that is responsible for managing the airport. Usually, this indicates that the related Organisation/Authority is responsible for the management of the aerodrome/heliport. The concept of 'airport management' is not applicable to all aerodrome/heliports world-wide. In that case, the Aerodrome/Heliport will be associated with the State responsible fot its operations.
hasReferencePoint	0..1	ARP	ElevatedPoint	Airport reference point.
hasBoundaryForAviationPurposes	0..1	aviationBoundary	ElevatedSurface	Boundary of the airport/heliport used for aviation operations.
utilizes	0..*	altimeterSource	AltimeterSource	The altimeter source used by the Airport.
isContactedAt	0..*	contact	ContactInformation	Contact details for the AirportHeliport (phone, postal address, e-mail, etc.)
isOperationalBy	0..*	availability	AirportHeliportAvailability	Information about the operational status of the airport/heliport.
hasAnnotations	0..*	annotation	Note

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

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