ATCBlindSpot
type: Class
subclass of: AerodromeInfrastructure
comment: A location on an aerodrome movement area that is not visible to ATC personnel due to obstructions and is not designated as a Hot Spot.

Aerodrome
type: Class
subclass of: AerodromeInfrastructure
comment: 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.

Aerodrome-isAbandoned
type: Class
subclass of: Aerodrome
comment: An indicator that the aerodrome is no longer in operational use, but its infrastructure is still present and visible from the air.

Aerodrome-isAltimeterCheckLocationAvailable
type: Class
subclass of: Aerodrome
comment: The availability of a point or area designated at an aerodrome where the checking of an altimeter system can be accomplished.

Aerodrome-isLandingDirectionIndicatorAvailable
type: Class
subclass of: Aerodrome
comment: The availability of a device that indicates visually the direction currently designated for landing and for take-off.

Aerodrome-isPrivateUse
type: Class
subclass of: Aerodrome
comment: Indication whether the aerodrome is only for the use of the owners and not open for the public.

Aerodrome-isSecondaryPowerSupplyAvailable
type: Class
subclass of: Aerodrome
comment: The availability of emergency power supply for the aerodrome.

Aerodrome-isWindDirectionIndicatorAvailable
type: Class
subclass of: Aerodrome
comment: The availability of a device at the aerodrome that indicates the direction and the intensity of the wind.

AerodromeAvailability
type: Class
subclass of: AerodromeInfrastructure
comment: Information about the operational status of the aerodrome.

AerodromeCollocation
type: Class
subclass of: AerodromeInfrastructure
comment: The sharing by two aerodromes of some or all of their ground facilities.

AerodromeHotSpot
type: Class
subclass of: AerodromeInfrastructure
comment: A location on an aerodrome movement area with a history or potential risk of collision or runway incursion, and where heightened attention by pilots/drivers is necessary.

AerodromeProtectionArea
type: Class
subclass of: AerodromeInfrastructure
comment: An area situated in the vicinity of a runway, Final Approach and Take-Off Area (FATO) or Touchdown and Liftoff Area (TLOF), provided to protect aircraft during manoeuvring, take-off and/or landing operations.

AerodromeProtectionArea-isLightingAvailable
type: Class
subclass of: AerodromeProtectionArea
comment: The availability of a lighting system that visually identifies the Protection Area in low visibility conditions.

AerodromeProtectionArea-isObstacleFree
type: Class
subclass of: AerodromeProtectionArea
comment: An indicator that the protection area is obstacle free.

AerodromeProtectionAreaMarking
type: Class
subclass of: Marking
subclass of: AerodromeInfrastructure
comment: A symbol or group of symbols displayed on the edge of the landing protection area at an aerodrome.

AerodromeResponsibilityOrganisation
type: Class
subclass of: AerodromeInfrastructure
comment: The role of the organisation which is responsible for the aerodrome.

AerodromeSign
type: Class
subclass of: AerodromeInfrastructure
comment: A sign presenting messages related to aircraft and vehicle movement.

AerodromeSurfaceRoutingNetwork
type: Class
subclass of: AerodromeInfrastructure
comment: A connected and directed graph defined by Node and Edge features that represents logical and physical connections between taxiways, runways and other features related to the movement area of an aerodrome.

AerodromeSurfaceRoutingNetworkEdge
type: Class
subclass of: AerodromeInfrastructure
comment: A directional or bi-directional connection between nodes having an attached geometry which can be used for a graphical depiction of the taxi route.

AerodromeSurfaceRoutingNetworkNode
type: Class
subclass of: AerodromeInfrastructure
comment: Representation of the intersection of two or more aerodrome features related to taxi operations, or other special location such as holding position or entry or exit to a parking area.

AerodromeSystem
type: Class
subclass of: AerodromeInfrastructure
comment: A system at an aerodrome.

AerodromeTerrain
type: Class
subclass of: AerodromeInfrastructure
comment: The terrain near an aerodrome.

AerodromeUsage
type: Class
subclass of: UsageCondition
subclass of: AerodromeInfrastructure
comment: A rule governing the functions that may be performed on an aerodrome.

AircraftStand
type: Class
subclass of: AerodromeInfrastructure
comment: A designated area on an apron intended to be used for parking an aircraft.

AircraftStandConfiguration
type: Class
subclass of: AerodromeInfrastructure
comment: Configuration of aircraft stands available for use in a given airport operational mode.

AltimeterSource
type: Class
subclass of: AerodromeInfrastructure
comment: An instrument which measures vertical distance with respect to a reference level.

AltimeterSource-isPrimary
type: Class
subclass of: AltimeterSource
comment: Indication whether the altimeter is primary.

AltimeterSource-isRemote
type: Class
subclass of: AltimeterSource
comment: Indication whether the altimeter is remote.

AltimeterSourceStatus
type: Class
subclass of: AerodromeInfrastructure
comment: The operational status of an altimeter source.

ApproachLightingSystem
type: Class
subclass of: GroundLightSystem
subclass of: AerodromeInfrastructure
comment: An airport lighting facility which provides visual guidance to landing aircraft by radiating light beams in a directional pattern by which the pilot aligns the aircraft with the final approach path for landing.

ApproachLightingSystem-isAlignmentIndicatorAvailable
type: Class
subclass of: ApproachLightingSystem
comment: An indication that a runway alignment indicator is available for the approach lighting system.

ApproachLightingSystem-isSequencedFlashingAvailable
type: Class
subclass of: ApproachLightingSystem
comment: An indication that sequenced flashing is available for the approach lighting system.

Apron
type: Class
subclass of: AerodromeInfrastructure
comment: A defined area, on a land aerodrome/heliport, intended to accommodate aircraft/helicopters for purposes of loading and unloading passengers, mail or cargo, and for fuelling, parking or maintenance.

Apron-isAbandoned
type: Class
subclass of: Apron
comment: An indicator that an apron is no longer in operational use, but it is still physically present and visible, although usually in a degraded state.

ApronAreaAvailability
type: Class
subclass of: AerodromeInfrastructure
comment: Information about the operational status of an element situated in an aerodrome apron area.

ApronAreaUsage
type: Class
subclass of: UsageCondition
subclass of: AerodromeInfrastructure
comment: A rule governing the usage of an element situated in the apron area.

ApronElement
type: Class
subclass of: AerodromeInfrastructure
comment: A part of a defined apron area.

ApronElement-isDockingAvailable
type: Class
subclass of: ApronElement
comment: An indicator of the availability of docking station system at an apron element.

ApronElement-isGroundPowerAvailable
type: Class
subclass of: ApronElement
comment: An indicator of the availability of ground power at an apron element.

ApronElement-isJetwayAvailable
type: Class
subclass of: ApronElement
comment: An indicator of the availability of jetway at an apron element.

ApronElement-isTowingAvailable
type: Class
subclass of: ApronElement
comment: Availability of towing service at an apron element.

ApronLightSystem
type: Class
subclass of: GroundLightSystem
subclass of: AerodromeInfrastructure
comment: The lighting system provided for illuminating apron areas of an aerodrome.

ApronMarking
type: Class
subclass of: Marking
subclass of: AerodromeInfrastructure
comment: A symbol or group of symbols displayed on the surface of an apron of an aerodrome.

ArrestingGear
type: Class
subclass of: AerodromeInfrastructure
comment: A series of devices (for example: engaging or catching devices and energy absorption devices) that are used to stop an aircraft by absorbing its momentum in a routine landing, emergency landing or aborted take-off.

ArrestingGear-isBidirectional
type: Class
subclass of: ArrestingGear
comment: An indicator of whether or not both runway directions utilise arresting gear which consists of a series of devices used to stop an aircraft by absorbing its momentum.

DeicingArea
type: Class
subclass of: AerodromeInfrastructure
comment: An area comprising an inner area for the parking of an aeroplane to receive de-icing / anti-icing treatment and an outer area for the manoeuvring of two or more mobile de-icing / anti-icing equipment.

DeicingAreaMarking
type: Class
subclass of: Marking
subclass of: AerodromeInfrastructure
comment: A symbol or group of symbols displayed on the surface of a deicing area

DeicingGroup
type: Class
subclass of: AerodromeInfrastructure
comment: A group of deicing areas.

FloatingDockSite
type: Class
subclass of: AerodromeInfrastructure
comment: Floating facility which can serve as a mooring place for vessels or as a floating dry dock.

Gate
type: Class
subclass of: AerodromeInfrastructure
comment: Access to an airport terminal on the passenger side.

Gate-isUsableForTransit
type: Class
subclass of: Gate
comment: Indication that the gate can be used for transit.

GroundLightSystem
type: Class
subclass of: AerodromeInfrastructure
comment: One or more light sources located on the ground that provide visual assistance for air and ground navigation.

GroundLightSystem-isEmergencyLightingAvailable
type: Class
subclass of: GroundLightSystem
comment: The availability of a back-up lighting system to be used in case of failure of the main lighting system.

GroundLightingAvailability
type: Class
subclass of: AerodromeInfrastructure
comment: Information about the operational status of a ground light.

GuidanceLine
type: Class
subclass of: AerodromeInfrastructure
comment: A line used to guide aircraft on and between airport movement areas.

GuidanceLineLightSystem
type: Class
subclass of: GroundLightSystem
subclass of: AerodromeInfrastructure
comment: The lighting system for the centreline guidance line.

GuidanceLineMarking
type: Class
subclass of: Marking
subclass of: AerodromeInfrastructure
comment: A symbol or group of symbols displayed as the guidance line.

LandAndHoldShortOperationsMarking
type: Class
subclass of: Marking
subclass of: AerodromeInfrastructure
comment: Marking used for Land and Hold Short Operations (LAHSO).

ManoeuvringArea
type: Class
subclass of: AerodromeInfrastructure
comment: That part of an aerodrome to be used for the take-off, landing and taxiing of aircraft, excluding aprons.

ManoeuvringAreaAvailability
type: Class
subclass of: AerodromeInfrastructure
comment: Information about the operational status of the manoeuvring area elements.

ManoeuvringAreaUsage
type: Class
subclass of: UsageCondition
subclass of: AerodromeInfrastructure
comment: A rule governing the usage of the manoeuvring area element.

Marking
type: Class
subclass of: AerodromeInfrastructure
comment: A symbol or group of symbols displayed on the surface of the movement area in order to convey aeronautical information.

Marking-isMarkingICAOStandard
type: Class
subclass of: Marking
comment: Indicates the aerodrome protection area surface marking is in accordance with International Civil Aviation Organization (ICAO) standard as described in Annex 14.

MarkingBuoy
type: Class
subclass of: AerodromeInfrastructure
comment: A floating object moored to the bottom in a particular place, as an aid to navigation or for other specific purposes.

MarkingElement
type: Class
subclass of: AerodromeInfrastructure
comment: A symbol displayed on an aerodrome surface in order to convey aeronautical information.

MovementArea
type: Class
subclass of: AerodromeInfrastructure
comment: That part of an aerodrome to be used for the take-off, landing and taxiing of aircraft, consisting of the manoeuvring area and the apron(s).

NavaidEquipmentDistance
type: Class
subclass of: AerodromeInfrastructure
comment: The distances between various runway centreline points and a radio navigation aid.

NonMovementArea
type: Class
subclass of: AerodromeInfrastructure
comment: Area where aircraft cannot be seen by a control tower and therefore are restricted to move.

ParkingConfiguration
type: Class
subclass of: AerodromeInfrastructure
comment: Grouping of non-overlapping aircraft parking positions: a single ParkingConfiguration defines a way to divide the stand's area into one or more non-overlapping parking positions.

PassengerLoadingBridge
type: Class
subclass of: AerodromeInfrastructure
comment: A mechanically operated, adjustable ramp to provide direct passenger access between aircraft and buildings.

PositionMarking
type: Class
subclass of: AerodromeInfrastructure
comment: Location on the movement area surface used for Air Traffic Control clearances. Position marking could be a painted marking or a sign.

PositionMarking-isUsedInLVO
type: Class
subclass of: PositionMarking
comment: Usage of the feature instance for Low Visibility Operations

Road
type: Class
subclass of: AerodromeInfrastructure
comment: An established surface route on the movement area meant for the exclusive use of vehicles.

Road-isAbandoned
type: Class
subclass of: Road
comment: An indicator that a road is no longer in operational use, but it is still physically present and visible, although usually in a degraded state.

Runway
type: Class
subclass of: AerodromeInfrastructure
comment: A defined rectangular area on a land aerodrome prepared for the landing and take-off of aircraft.

Runway-isAbandoned
type: Class
subclass of: Runway
comment: An indicator that the surface is no longer in operational use, but is still physically present and visible, although usually in a degraded state.

RunwayBlastPad
type: Class
subclass of: AerodromeInfrastructure
comment: Specially prepared surface placed adjacent to the end of a runway to eliminate the erosive effect of the high wind forces produced by airplanes at the beginning of their take-off rolls.

RunwayConfiguration
type: Class
subclass of: AerodromeInfrastructure
comment: Configuration of runway directions available for use in a given airport operational mode.

RunwayDeclaredDistance
type: Class
subclass of: AerodromeInfrastructure
comment: A conventional operational distance declared for a runway direction.

RunwayDirection
type: Class
subclass of: AerodromeInfrastructure
comment: One of the two possible landing and/or take-off directions of a runway or Final Approach and Take-off Area (FATO).

RunwayDirection-isTakeoffHoldLightSystemInstalled
type: Class
subclass of: RunwayDirection
comment: Indicates if Take-off Hold Light system is installed at that end of the runway.

RunwayDirectionLightSystem
type: Class
subclass of: GroundLightSystem
subclass of: AerodromeInfrastructure
comment: The lighting system provided for a landing and take-off direction, including the stopway lights.

RunwayElement
type: Class
subclass of: AerodromeInfrastructure
comment: A portion of a runway.

RunwayExitLine
type: Class
subclass of: GuidanceLine
subclass of: AerodromeInfrastructure
comment: Guidance line painted on the runway exit.

RunwayMarking
type: Class
subclass of: Marking
subclass of: AerodromeInfrastructure
comment: A symbol or group of symbols displayed on the surface of the runway in order to convey aeronautical information.

RunwayProtectArea
type: Class
subclass of: AerodromeProtectionArea
subclass of: AerodromeInfrastructure
comment: An area situated in the vicinity of a runway or provided to protect aircraft during manoeuvring, take-off and landing operations.

RunwayProtectAreaLightSystem
type: Class
subclass of: GroundLightSystem
subclass of: AerodromeInfrastructure
comment: The lighting for the runway protect area.

SeaplaneLandingArea
type: Class
subclass of: AerodromeInfrastructure
comment: A defined area on water at an aerodrome prescribed for the landing and take-off of seaplanes.

SeaplaneRampSite
type: Class
subclass of: AerodromeInfrastructure
comment: Ramps specifically designed to transit seaplanes from land to water and vice versa.

StandMarking
type: Class
subclass of: Marking
subclass of: AerodromeInfrastructure
comment: A symbol or group of symbols displayed on the surface of the Aircraft Stand.

SurfaceCharacteristics
type: Class
subclass of: AerodromeInfrastructure
comment: The characteristics of an aerodrome surface.

TaxiRoute
type: Class
subclass of: AerodromeInfrastructure
comment: A predefined path from a Runway to an aircraft Stand (and vice versa). A taxi route is a sequence of taxiways.

TaxiRoute-isAllowed
type: Class
subclass of: TaxiRoute
comment: Indication whether the usage of the taxi route is allowed or prohibited, depending on runway configuration.

Taxiway
type: Class
subclass of: AerodromeInfrastructure
comment: A defined path on a land aerodrome established for the taxiing of aircraft and intended to provide a link between one part of the aerodrome and another, including: a) Aircraft stand taxilane. A portion of an apron designated as a taxiway and intended to provide access to aircraft stands only. b) Apron taxiway. A portion of a taxiway system located on an apron and intended to provide a through taxi route across the apron. c) Rapid exit taxiway. A taxiway connected to a runway at an acute angle and designed to allow landing aeroplanes to turn off at higher speeds than are achieved on other exit taxiways thereby minimizing runway occupancy times.

Taxiway-isAbandoned
type: Class
subclass of: Taxiway
comment: An indicator that a taxiway is no longer in operational use, but it is still physically present and visible, although usually in a degraded state.

TaxiwayConfiguration
type: Class
subclass of: AerodromeInfrastructure
comment: Configuration of taxiways available for use in a given airport operational mode.

TaxiwayElement
type: Class
subclass of: AerodromeInfrastructure
comment: A portion of a taxiway.

TaxiwayHoldingPosition
type: Class
subclass of: AerodromeInfrastructure
comment: A designated position at which taxiing aircraft and vehicles must stop and hold position, unless otherwise authorized by the aerodrome control tower.

TaxiwayHoldingPositionLightSystem
type: Class
subclass of: GroundLightSystem
subclass of: AerodromeInfrastructure
comment: Lighting system for a taxiway hold position.

TaxiwayHoldingPositionMarking
type: Class
subclass of: Marking
subclass of: AerodromeInfrastructure
comment: A symbol or group of symbols displayed on the surface of a Taxiway indicating the location of the Taxiway Holding Position.

TaxiwayHoldingPositionMarking-isRunwayEntryLightSystemInstalled
type: Class
subclass of: TaxiwayHoldingPositionMarking
comment: Indicates if Runway Entry Light system is installed at holding position

TaxiwayIntersectionMarking
type: Class
subclass of: TaxiwayMarking
subclass of: AerodromeInfrastructure
comment: A marking painted at a position at which taxiing aircraft and vehicles are expected to stop and hold until further cleared to proceed, when so instructed by the aerodrome control tower.

TaxiwayLightSystem
type: Class
subclass of: GroundLightSystem
subclass of: AerodromeInfrastructure
comment: The lighting system provided for a taxiway at an aerodrome.

TaxiwayMarking
type: Class
subclass of: Marking
subclass of: AerodromeInfrastructure
comment: A symbol or group of symbols displayed on the surface of the taxiway.

Terminal
type: Class
subclass of: AerodromeInfrastructure
comment: An installation on an aerodrome with facilities for loading and unloading aircraft and processing traffic (passengers, baggage, cargo and mail).

TouchDownLiftOff
type: Class
subclass of: AerodromeInfrastructure
comment: A load bearing area on which a helicopter may touch down or lift off.

TouchDownLiftOff-isAbandoned
type: Class
subclass of: TouchDownLiftOff
comment: An indicator that the touch down and lift-off area is no longer in operational use, but it is still physically present and visible, although usually in a degraded state.

TouchDownLiftOffLightSystem
type: Class
subclass of: GroundLightSystem
subclass of: AerodromeInfrastructure
comment: The lighting system provided for a touch down and lift-off surface at an aerodrome.

TouchDownLiftOffMarking
type: Class
subclass of: Marking
subclass of: AerodromeInfrastructure
comment: A symbol or group of symbols displayed on the surface of the touch down and lift-off area at an aerodrome.

TouchDownLiftOffSafeArea
type: Class
subclass of: AerodromeProtectionArea
subclass of: AerodromeInfrastructure
comment: An obstacle-free area situated in the vicinity of a touchdown and lift-off area, provided to protect helicopters during manoeuvring, take-off and / or landing operations.

UsageCondition
type: Class
subclass of: AerodromeInfrastructure
comment: A rule governing the usage of an aerodrome or one of its surfaces.

VisualGlideSlopeIndicator
type: Class
subclass of: GroundLightSystem
subclass of: AerodromeInfrastructure
comment: A visual guidance system that provides 'below/above glidepath' information to an aircraft executing an approach to a specific runway direction.

VisualGlideSlopeIndicator-isPortable
type: Class
subclass of: VisualGlideSlopeIndicator
comment: An indicator of whether or not a runway's visual glide slope indicator system is capable of being transported or conveyed.

WorkArea
type: Class
subclass of: AerodromeInfrastructure
comment: A part of an aerodrome in which maintenance or construction works are in progress.

WorkAreaActivity
type: Class
subclass of: AerodromeInfrastructure
comment: Aerodrome work area activity information.

WorkAreaActivity-isActive
type: Class
subclass of: WorkAreaActivity
comment: An indication that an aerodrome work area is active.

AerodromeInfrastructure
type: Class
comment: The aerodrome including any installations and equipment.