]> 2008/06/10 OpenCyc Knowledge Base Copyright© 2001-2008 Cycorp, Inc., http://www.cyc.com/, Austin, TX, USA This file contains an OWL representation of information contained in the OpenCyc Knowledge Base. The content of this OWL file is licensed under the Creative Commons Attribution 3.0 license whose text can be found at http://creativecommons.org/licenses/by/3.0/legalcode. The content of this OWL file, including the OpenCyc content it represents, constitutes the "Work" referred to in the Creative Commons license. The terms of this license equally apply to, without limitation, renamings and other logically equivalent reformulations of the content of this OWL file (or portions thereof) in any natural or formal language, as well as to derivations of this content or inclusion of it in other ontologies. externalID A unique, language-neutral, variable-sized identifier for a concept that can be used to refer unambiguously to that concept across OWL exports or across Cyc inference engines. label A natural-language representation for a concept that is both human readable and readable by the Cyc inference engine. These terms are not guaranteed to refer to the same concept across time but are guaranteed to be consistent within a particular OWL export. Use 'cycAnnot:externalID' for unambiguously referring to a concept across OWL exports or across Cyc inference engines. A <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4ret7qgOKgEdmAAAACs6hfSg" class="cyc_term">ConceptTypeByDomain</a> (q.v.). Instances of AerodromeConcept are collections and relations having to do with air transportation facilities, equipment, and personnel. AerodromeConcept the air transportation facility domain MilitaryAirfield The collection of all military airfields. Similar to instances of its superset <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj-r5wpEbGdrcN5Y29ycA" class="cyc_term">Airport_Physical</a>, all <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvjYdcZwpEbGdrcN5Y29ycA" class="cyc_term">MilitaryAirfield</a>s have a runway where airplanes take off and land. They generally also contain buildings for the military personnel that operate the military airplanes that are stationed at the airfield. military airfield A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjVQJwpEbGdrcN5Y29ycA" class="cyc_term">TransportationDevice</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViuUJwpEbGdrcN5Y29ycA" class="cyc_term">AirTransportationDevice</a> is a device used for transporting either people or cargo through the air. Specializations of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViuUJwpEbGdrcN5Y29ycA" class="cyc_term">AirTransportationDevice</a> include the collections <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViCi5wpEbGdrcN5Y29ycA" class="cyc_term">Airplane</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViuEJwpEbGdrcN5Y29ycA" class="cyc_term">Helicopter</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVizNpwpEbGdrcN5Y29ycA" class="cyc_term">HotAirBalloon</a>, and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQwpMZwpEbGdrcN5Y29ycA" class="cyc_term">GroundToOrbitVehicle</a>. aircraft AirTransportationDevice airport decontamination pad DecontaminationPad-Airport A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rKWqDtARAEdqAAAACs6hnlQ" class="cyc_term">Apron_Airport</a> designated area where a Nuclear, Biological, or Chemical (NBC) contaminated aircraft, checked at landing, is sent to be decontaminated by special teams. A specialization <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4r7k80XssQEdmAAAACs6hRjg" class="cyc_term">TravelRoute</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjKxZwpEbGdrcN5Y29ycA" class="cyc_term">PathThroughAir</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rYULd1gRAEdqAAAACs6hnlQ" class="cyc_term">TravelRoute_Air</a> is an established line of travel or access that traverses some <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvzglL5wpEbGdrcN5Y29ycA" class="cyc_term">AirspaceRegion</a>, intended for use by <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViuUJwpEbGdrcN5Y29ycA" class="cyc_term">AirTransportationDevice</a>s. TravelRoute-Air air transportation route commercial airport CommercialAirport A subcollection of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj-r5wpEbGdrcN5Y29ycA" class="cyc_term">Airport_Physical</a>. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4ruQS1AL_QQdeZXf-MIWWdng" class="cyc_term">CommercialAirport</a> is the collection of all airports which serve primarily commercial passenger airlines and/or commercial air freight companies. See the collection <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViq7pwpEbGdrcN5Y29ycA" class="cyc_term">AirlineCompany</a>. AirspaceRegion airspace A region of space above a portion of the Earth's surface, inclusive at least of the lower layers of the atmosphere and possibly extending as far as near Earth orbit, and such that military and civilian flights through it are regulated by a central administrative authority or authorities. Typically, this authority will be some suborganization of the government of the terrestrial region which serves to demarcate the <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvzglL5wpEbGdrcN5Y29ycA" class="cyc_term">AirspaceRegion</a> in question, and if more than one authority has immediate responsibility for air traffic in the same <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvzglL5wpEbGdrcN5Y29ycA" class="cyc_term">AirspaceRegion</a>, they will be related suborganizations of the same parent organization. There are some notable exceptions, however: eg, the <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv4fWdpwpEbGdrcN5Y29ycA" class="cyc_term">SouthernIraqiNoFlyZone</a>. MakingAvailableOfAirplaneRunway making an airplane runway available CarryOnLuggage carry on luggage The collection of all carry-on luggage. A type of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViHJpwpEbGdrcN5Y29ycA" class="cyc_term">Luggage</a>. The collection <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv3LAiJwpEbGdrcN5Y29ycA" class="cyc_term">CarryOnLuggage</a> is an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4roOCJgqgyQdePhq6ip3adDw" class="cyc_term">ArtifactTypeByFunction</a>, a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rpPHhAOB1EdqAAAACs6hRXg" class="cyc_term">SpatiallyDisjointObjectType</a>, and an #$AerodromeCollection. (TransportViaFn Helicopter) transportation by means of helicopters INS alignment pad INSAlignmentPad A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rKWqDtARAEdqAAAACs6hnlQ" class="cyc_term">Apron_Airport</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rbgGFQARAEdqAAAACs6hnlQ" class="cyc_term">INSAlignmentPad</a> is a designated area where the inertial navigation system instruments of an aircraft are reset before take-off. AirportOrganization airport <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVifvJwpEbGdrcN5Y29ycA" class="cyc_term">AirportOrganization</a> is a specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwRhGXpwpEbGdrcN5Y29ycA" class="cyc_term">TravelOrganization</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVifvJwpEbGdrcN5Y29ycA" class="cyc_term">AirportOrganization</a> is an organization that manages and controls particular airports and their appurtenant facilities; e.g., <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv4YTGZwpEbGdrcN5Y29ycA" class="cyc_term">LaGuardiaAirport_Organization</a>. helicopter landing The collection of all helicopter landings. A type of transportation by means of helicopters and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvyClxJwpEbGdrcN5Y29ycA" class="cyc_term">Landing_Aircraft</a>. The concept <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rbF_Q-gQ9EdqAAAACs6hnlQ" class="cyc_term">HelicopterLanding</a> is an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv48ocpwpEbGdrcN5Y29ycA" class="cyc_term">AccomplishmentType</a>, a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwNyXxJwpEbGdrcN5Y29ycA" class="cyc_term">DurativeEventType</a>, and an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rGLqw_k2LEdqAAAACs6hnlQ" class="cyc_term">AerodromeConcept</a>. HelicopterLanding AirTrafficControl The collection of all air traffic control. A type of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rgTOViGN_EdqAAAACs71DGQ" class="cyc_term">ControllingTraffic</a>. The concept <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwLNF_pwpEbGdrcN5Y29ycA" class="cyc_term">AirTrafficControl</a> is an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rGLqw_k2LEdqAAAACs6hnlQ" class="cyc_term">AerodromeConcept</a>. air traffic control aircraft engine AircraftEngine the collection of all <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjOxJwpEbGdrcN5Y29ycA" class="cyc_term">Engine</a>s designed for use in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViCi5wpEbGdrcN5Y29ycA" class="cyc_term">Airplane</a>s aircraft cabin The region of a plane where passengers ride. AircraftCabin airportHasICAOCode (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rhHxK_ocFQdec1ciOmdeWxw" class="cyc_term">airportHasIATACode</a> AIRPORT STRING) means that the instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj-r5wpEbGdrcN5Y29ycA" class="cyc_term">Airport_Physical</a> AIRPORT has been designated with the ICAO code STRING. airport ICAO code AirApproach air approach Characteristic attribute of an approach corridor employed by air traffic. A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv-uQ55wpEbGdrcN5Y29ycA" class="cyc_term">ControlTower</a>. Instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvfiqHJwpEbGdrcN5Y29ycA" class="cyc_term">AirControlTower</a> are located within airport traffic areas and house persons and equipment used to control the flow of air traffic. AirControlTower airport control tower <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViRDpwpEbGdrcN5Y29ycA" class="cyc_term">AirplaneRunway</a> is a specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVkCmpwpEbGdrcN5Y29ycA" class="cyc_term">PathForWheeledVehicles</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViRDpwpEbGdrcN5Y29ycA" class="cyc_term">AirplaneRunway</a> is an airstrip at an airport, on an aircraft carrier, or in some field where airplanes taxi, take off, and land. runway AirplaneRunway A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjHL5wpEbGdrcN5Y29ycA" class="cyc_term">PhysicalDevice</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rNJdNgARAEdqAAAACs6hnlQ" class="cyc_term">AircraftArrestingGear</a> is a device used to stop an aircraft immediately upon landing. Common examples include the cable and hook systems on <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQCZhZwpEbGdrcN5Y29ycA" class="cyc_term">AircraftCarrier</a>s and barrier nets. aircraft arresting gear AircraftArrestingGear inertial navigation system InertialNavigationSystem A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjbmZwpEbGdrcN5Y29ycA" class="cyc_term">NavigationDevice</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rav4NFARAEdqAAAACs6hnlQ" class="cyc_term">InertialNavigationSystem</a> measures the position and altitude of a vehicle by measuring the accelerations and rotations applied to the system's inertial frame. airfield An airplane landing strip with no facilities for the commercial handling of cargo or passengers Airfield RadarReflector-Runway A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rLrqR9gRAEdqAAAACs6hnlQ" class="cyc_term">RadarReflector</a>. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rMUt8UARAEdqAAAACs6hnlQ" class="cyc_term">RadarReflector_Runway</a>s are mounted at one end of an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViRDpwpEbGdrcN5Y29ycA" class="cyc_term">AirplaneRunway</a> in order to make that runway highly detectable to aircraft-mounted <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv4DToZwpEbGdrcN5Y29ycA" class="cyc_term">RadarDevice</a>s. runway radar reflector airport A specialization of both <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjGR5wpEbGdrcN5Y29ycA" class="cyc_term">FixedStructure</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvWjXAJwpEbGdrcN5Y29ycA" class="cyc_term">TransportFacility</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj-r5wpEbGdrcN5Y29ycA" class="cyc_term">Airport_Physical</a> is a facility which includes at least one runway where airplanes can take off and land. Instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj-r5wpEbGdrcN5Y29ycA" class="cyc_term">Airport_Physical</a> may also have terminals and an air control tower, in addition to having a runway. See also the related collection <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVifvJwpEbGdrcN5Y29ycA" class="cyc_term">AirportOrganization</a>. Airport-Physical Taxiway A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvyNjbZwpEbGdrcN5Y29ycA" class="cyc_term">Roadway</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rZ6bwBARAEdqAAAACs6hnlQ" class="cyc_term">Taxiway</a> is a prepared surface providing acess to and from an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViRDpwpEbGdrcN5Y29ycA" class="cyc_term">AirplaneRunway</a>. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rZ6bwBARAEdqAAAACs6hnlQ" class="cyc_term">Taxiway</a>s could be considered as the collection of non-runway ground paths for airplanes. taxiway The collection of all instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv-6HepwpEbGdrcN5Y29ycA" class="cyc_term">TransportationEvent</a> in which the role of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjB2JwpEbGdrcN5Y29ycA" class="cyc_term">transporter</a> is filled by some instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViCi5wpEbGdrcN5Y29ycA" class="cyc_term">Airplane</a>. This collection includes not only flying events (moving through the air, with the plane supported by the air), but also such events as taxiing, takeoff and landing. air transportation (TransportViaFn Airplane) Revetment A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4r6WDBDLyvEdmAAAACs6hRjg" class="cyc_term">Barrier_ConstructionArtifact</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViS4pwpEbGdrcN5Y29ycA" class="cyc_term">PhysicalImpactBuffer</a>. A <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rXys5EgRAEdqAAAACs6hnlQ" class="cyc_term">Revetment</a> protects equipment or facilities from hostile action, specifically <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvgD3bpwpEbGdrcN5Y29ycA" class="cyc_term">Explosion</a>s. revetment The collection of people who work aboard an aircraft in flight and assist either in flying it or in the service or task it performs. aircraft crew member AircraftCrewMember A <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvq1MjZwpEbGdrcN5Y29ycA" class="cyc_term">SeaplaneStation</a> is an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj-r5wpEbGdrcN5Y29ycA" class="cyc_term">Airport_Physical</a> which is adjacent to some <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjMf5wpEbGdrcN5Y29ycA" class="cyc_term">Sea</a> or other large body of water and supports the takeoff and landing of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQCIVJwpEbGdrcN5Y29ycA" class="cyc_term">FloatPlane</a>s. SeaplaneStation seaplane station helipad A paved or improved area used by vertical take-off and landing (VTOL) aircraft for <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwF65FZwpEbGdrcN5Y29ycA" class="cyc_term">TakeOff_Flight</a>s and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvyClxJwpEbGdrcN5Y29ycA" class="cyc_term">Landing_Aircraft</a>s. Helipad A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4r6WDBDLyvEdmAAAACs6hRjg" class="cyc_term">Barrier_ConstructionArtifact</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rOxoA5ARAEdqAAAACs6hnlQ" class="cyc_term">AircraftBlastBarrier</a> is a barrier (typically a wall), used to divert or dissipate jet or propeller blast. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rOxoA5ARAEdqAAAACs6hnlQ" class="cyc_term">AircraftBlastBarrier</a>s perform both safety and noise reduction functions. jet blast barrier AircraftBlastBarrier A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvYOiA5wpEbGdrcN5Y29ycA" class="cyc_term">Terminal_TransferPoint</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj7KJwpEbGdrcN5Y29ycA" class="cyc_term">Building</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj_BpwpEbGdrcN5Y29ycA" class="cyc_term">AirportTerminalBuilding</a> is a building from and to which passengers board and exit <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViCi5wpEbGdrcN5Y29ycA" class="cyc_term">Airplane</a>s. AirportTerminalBuilding airport terminal An instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rDTzwfqT1QdiMrpHg0j56DQ" class="cyc_term">TransportationTypeByMedium</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rbLEyhqT1QdiVH6plIvejdw" class="cyc_term">LandTransportationEvent</a> is a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv-6HepwpEbGdrcN5Y29ycA" class="cyc_term">TransportationEvent</a> which occurs primarily in a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViGgJwpEbGdrcN5Y29ycA" class="cyc_term">PieceOfSky</a>. air transportation event AirTransportationEvent The collection of all aircraft mechanics. A type of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwA6F5ZwpEbGdrcN5Y29ycA" class="cyc_term">Mechanic</a>. The collection <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWIpwpEbGdrcN5Y29ycA" class="cyc_term">AircraftMechanic</a> is an #$AerodromeCollection and a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVii2ZwpEbGdrcN5Y29ycA" class="cyc_term">PersonTypeByOccupation</a>. aircraft mechanic AircraftMechanic mobile radar reflector RadarReflector-Mobile A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rLrqR9gRAEdqAAAACs6hnlQ" class="cyc_term">RadarReflector</a>. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rMwQ9NARAEdqAAAACs6hnlQ" class="cyc_term">RadarReflector_Mobile</a>s are most typically mounted on boats and ships, in order to make them more detectable to <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv4DToZwpEbGdrcN5Y29ycA" class="cyc_term">RadarDevice</a>s on other vehicles. These devices are essential anti-collision safety equipment for instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4ropDJ5oVoQdeADpzQMiIrgg" class="cyc_term">WaterTransportationVehicle</a>. seaplane takeoff and landing area SeaplaneLandingTakeOffArea A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwP1QU5wpEbGdrcN5Y29ycA" class="cyc_term">WaterSurfacePath</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4raZqsAgRAEdqAAAACs6hnlQ" class="cyc_term">SeaplaneLandingTakeOffArea</a> is a designated portion of water outlined by visual surface markings, used by seaplanes to land and take off. airportServicesCity (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rT9kDvIcHQdeCwsYcQDxoUA" class="cyc_term">airportServicesCity</a> AIRPORT CITY) means the an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj-r5wpEbGdrcN5Y29ycA" class="cyc_term">Airport_Physical</a> services CITY. This means flights arrive and depart at a location very close to, if not in, that city. airport servicing a city AirplaneRunway-TouchdownZone runway touchdown zone A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVkCmpwpEbGdrcN5Y29ycA" class="cyc_term">PathForWheeledVehicles</a>. The first 3000 feet of an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViRDpwpEbGdrcN5Y29ycA" class="cyc_term">AirplaneRunway</a>, starting at the threshold, is called a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rXSVe6gRAEdqAAAACs6hnlQ" class="cyc_term">AirplaneRunway_TouchdownZone</a>. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViCi5wpEbGdrcN5Y29ycA" class="cyc_term">Airplane</a>s generally make their first contact with the ground in the <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rXSVe6gRAEdqAAAACs6hnlQ" class="cyc_term">AirplaneRunway_TouchdownZone</a> during <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjtSZwpEbGdrcN5Y29ycA" class="cyc_term">AirplaneLanding</a>s. BorderCheckpoint-AirTraffic The collection of border checkpoints whose primary purpose is to handle air-based traffic, e.g. people and goods travelling by airplane. Usually located at an airport. border checkpoint for air traffic radar reflector A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjbmZwpEbGdrcN5Y29ycA" class="cyc_term">NavigationDevice</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rLrqR9gRAEdqAAAACs6hnlQ" class="cyc_term">RadarReflector</a> is intended to be highly detectable by <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv4DToZwpEbGdrcN5Y29ycA" class="cyc_term">RadarDevice</a>s. Examples would include stationary reflectors for use with vehicle-mounted <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv4DToZwpEbGdrcN5Y29ycA" class="cyc_term">RadarDevice</a>s, and vehicle-mounted reflectors (such as those on boats) for use with all <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv4DToZwpEbGdrcN5Y29ycA" class="cyc_term">RadarDevice</a>s. RadarReflector AirplaneRunway-Overrun An area beyond an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViRDpwpEbGdrcN5Y29ycA" class="cyc_term">AirplaneRunway</a> designated as able to support an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViCi5wpEbGdrcN5Y29ycA" class="cyc_term">Airplane</a> during an aborted <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwF65FZwpEbGdrcN5Y29ycA" class="cyc_term">TakeOff_Flight</a>. runway overrun AirplaneRunway-DisplacedThreshold The designated beginning of the portion of the <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViRDpwpEbGdrcN5Y29ycA" class="cyc_term">AirplaneRunway</a> usable for an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjtSZwpEbGdrcN5Y29ycA" class="cyc_term">AirplaneLanding</a>. This is located at a point on the runway other than the designated beginning of the runway. In addition, the feature typically exists at each end of the runway. displaced threshold runway A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwF65FZwpEbGdrcN5Y29ycA" class="cyc_term">TakeOff_Flight</a>. Each instance of this collection is an event in which a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViuEJwpEbGdrcN5Y29ycA" class="cyc_term">Helicopter</a> leaves the ground and becomes airborne. HelicopterTakeOff helicopter takeoff hangar A specialization <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj7KJwpEbGdrcN5Y29ycA" class="cyc_term">Building</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQB9vJwpEbGdrcN5Y29ycA" class="cyc_term">VehicleStorageConstruct</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjI9ZwpEbGdrcN5Y29ycA" class="cyc_term">AircraftHangar</a> is a building designed to contain (or partially contain) aircraft, in order to protect them from the elements. AircraftHangar Air A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjFK5wpEbGdrcN5Y29ycA" class="cyc_term">GaseousTangibleThing</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjADJwpEbGdrcN5Y29ycA" class="cyc_term">Air</a> is one 'piece' among all the portions of the atmosphere of the Earth, considered as a substance present in various places, in various quantities, under various pressures, etc. Examples: the AirInAustin; the stuffy air in my office; the thin air atop Annapurna. See also <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjU2pwpEbGdrcN5Y29ycA" class="cyc_term">TheEarthsAtmosphere</a>, which is all ambient <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjADJwpEbGdrcN5Y29ycA" class="cyc_term">Air</a> on the planet taken as a single object. air MaintenanceOfPhysicalQuartersOfAirportOrganization maintenance of physical quarters of airport organization airportHasIATACode IATA airport code (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rhHxK_ocFQdec1ciOmdeWxw" class="cyc_term">airportHasIATACode</a> AIRPORT STRING) means that the instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj-r5wpEbGdrcN5Y29ycA" class="cyc_term">Airport_Physical</a> is designated by the IATA with the three letter <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvWEA25wpEbGdrcN5Y29ycA" class="cyc_term">CharacterString</a> STRING. Apron-Airport A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj2tJwpEbGdrcN5Y29ycA" class="cyc_term">ParkingLot</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rKWqDtARAEdqAAAACs6hnlQ" class="cyc_term">Apron_Airport</a> is a defined paved or hard-packed area at an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj-r5wpEbGdrcN5Y29ycA" class="cyc_term">Airport_Physical</a> or <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwGe3uZwpEbGdrcN5Y29ycA" class="cyc_term">Heliport_Physical</a> intended for parking <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViuUJwpEbGdrcN5Y29ycA" class="cyc_term">AirTransportationDevice</a>s. airport apron AirTransportationVehicle air transportation vehicle A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViuUJwpEbGdrcN5Y29ycA" class="cyc_term">AirTransportationDevice</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwLzhaZwpEbGdrcN5Y29ycA" class="cyc_term">TransportationDevice_Vehicle</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rz9o1UoVbQdeGXJ2yLxG0_A" class="cyc_term">AirTransportationVehicle</a> is a device which is both self-powered and controlled in some fashion by a user, and is used for transportation through air. Specializations of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rz9o1UoVbQdeGXJ2yLxG0_A" class="cyc_term">AirTransportationVehicle</a> include the collections <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViCi5wpEbGdrcN5Y29ycA" class="cyc_term">Airplane</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwEINmJwpEbGdrcN5Y29ycA" class="cyc_term">Ultralight</a>, but not collections of non-<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjUvZwpEbGdrcN5Y29ycA" class="cyc_term">SelfPoweredDevice</a>s such as <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvYBA7pwpEbGdrcN5Y29ycA" class="cyc_term">Glider</a>. AircraftCarrier aircraft carrier The collection of large warships that are capable of transporting airplanes. These ships have large, flat decks for take-offs and landings and serve as floating air bases for military aircraft. LuggageTag luggage tag The collection of all luggage tags. A type of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv_LHuZwpEbGdrcN5Y29ycA" class="cyc_term">Tag_IBO</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwKsSDJwpEbGdrcN5Y29ycA" class="cyc_term">TravelAccessory</a>. The collection <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvjnsTZwpEbGdrcN5Y29ycA" class="cyc_term">LuggageTag</a> is an #$AerodromeCollection, a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rpPHhAOB1EdqAAAACs6hRXg" class="cyc_term">SpatiallyDisjointObjectType</a>, and an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rejmDbrF_QdeIENT1qpbYzQ" class="cyc_term">ArtifactTypeByGenericCategory</a>. A <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4ret7qgOKgEdmAAAACs6hfSg" class="cyc_term">ConceptTypeByDomain</a> (q.v.). Instances of AerodromeConcept are collections and relations having to do with air transportation facilities, equipment, and personnel. AerodromeConcept the air transportation facility domain A <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4ret7qgOKgEdmAAAACs6hfSg" class="cyc_term">ConceptTypeByDomain</a> (q.v.). Instances of AerodromeConcept are collections and relations having to do with air transportation facilities, equipment, and personnel. AerodromeConcept the air transportation facility domain class of concepts belonging to a shared domain ConceptTypeByDomain Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4ret7qgOKgEdmAAAACs6hfSg" class="cyc_term">ConceptTypeByDomain</a> is a collection, all of whose elements can be considered concepts which belong to some domain of knowledge. For example, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rWJzeaOKhEdmAAAACs6hfSg" class="cyc_term">FamilyRelationsConcept</a> is the collection that includes predicates, such as <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjj6ZwpEbGdrcN5Y29ycA" class="cyc_term">siblings</a> or <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjPcJwpEbGdrcN5Y29ycA" class="cyc_term">children</a>, collections, such as <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjhG5wpEbGdrcN5Y29ycA" class="cyc_term">FamilyCohabitationUnit</a>, and potentially other concepts that are part of the domain of family relationships. It is important to note that instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4ret7qgOKgEdmAAAACs6hfSg" class="cyc_term">ConceptTypeByDomain</a> are not quoted collections -- i.e., their elements are not the _terms_ used to represent the concepts, but instead are the concepts themselves. thing Thing <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViA9JwpEbGdrcN5Y29ycA" class="cyc_term">Thing</a> is the "universal collection": the collection which, by definition, contains everything there is. Every thing in the Cyc ontology -- every <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjaApwpEbGdrcN5Y29ycA" class="cyc_term">Individual</a> (of any kind), every <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvl2en5wpEbGdrcN5Y29ycA" class="cyc_term">Set_Mathematical</a>, and every <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViAzJwpEbGdrcN5Y29ycA" class="cyc_term">Collection</a> -- is an instance of (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBBJwpEbGdrcN5Y29ycA" class="cyc_term">isa</a>) <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViA9JwpEbGdrcN5Y29ycA" class="cyc_term">Thing</a>. Similarly, every collection is a subcollection of (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBDpwpEbGdrcN5Y29ycA" class="cyc_term">genls</a>) <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViA9JwpEbGdrcN5Y29ycA" class="cyc_term">Thing</a>. Trivially, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViA9JwpEbGdrcN5Y29ycA" class="cyc_term">Thing</a> is both an instance of and a subcollection of itself, and is not a subcollection of any other collection. (Note that the above reference to "every thing in the Cyc ontology" is not meant to be limited to things actually reified in the Cyc system, but includes (e.g.) every instance -- reified or not, known or not -- of every collection recognized by Cyc.) A <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4ret7qgOKgEdmAAAACs6hfSg" class="cyc_term">ConceptTypeByDomain</a> (q.v.). Instances of AerodromeConcept are collections and relations having to do with air transportation facilities, equipment, and personnel. AerodromeConcept the air transportation facility domain