NRS fix
subclass of: Lat-lon fix
comment: The NRS is a system of waypoints developed for use within the United States for flight planning and navigation without reference to ground based navigational aids. The NRS waypoints are located in a grid pattern along defined latitude and longitude lines. NRS waypoint names are composed of two letters followed by two numbers, followed by a single letter. The first and second characters of NRS waypoints are the FIR identifier for the United States (“K”) and the FIR subdivision, or ARTCC center in which the waypoint is located (e.g. “D” for Denver ARTCC). The third and fourth characters are a number group representing the latitude of the waypoint. These numbers begin at the equator with 00 and advances north and south from 01 to 90 and correspond to every 10 minutes of latitude and repeating every 15°. The final character in the NRS waypoint is a letter representing the line of longitude for which the waypoint is located. This identifier starts at the prime meridian moving west to east and uses the letters A to Z while repeating every 26°. To date, the current density of the NRS grid is one waypoint spaced every 30 minutes of latitude and every 2° of longitude.
type: Class

Meter fix
subclass of: Absolute fix
comment: A fix defined as an point in the terminal airspace through which flights are metered by air traffic control on approach.
type: Class

includes airport type
range: string
domain: Airport spec
comment: Indicates which type of airports are included in the set of airports covered by this airport specification: all, US, CONUS, NonCONUS, International, Canadian. This property allows for the implicit specification of an entire class of airports; the property atm:includesAirport allows for the explicit specification of a list of specific airports.
type: DatatypeProperty

has crew member
range: Crew member
domain: Flight
comment: Links a flight to its crew members.
type: ObjectProperty

flow capacity
range: float
domain: Aircraft capacity
comment: The maximum controllable number of aircraft flowing through an airspace region per some interval of time.
type: DatatypeProperty

published departure day
range: NASday
domain: Flight
comment: Links to the day that the flight is planned to depart per the OAG schedule.
type: ObjectProperty
type: FunctionalProperty

alternate arrival airport
range: Airport
domain: Flight
comment: Links to the alternate arrival airport to be used in case of weather, traffic, or other unforseen contingency. The alternate airport is specified in the flight plan.
type: ObjectProperty

actual arrival time
range: dateTime
domain: Flight
comment: The time determined by surveillance data sources to be the 'actual' time of flight arrival, versus the scheduled time or the time specified in the flight plan, etc.
type: FunctionalProperty
type: DatatypeProperty

ReRoute time type
range: string
domain: ReRoute
comment: The time period associated with the reroute is specified in one of three ways. The reroute can apply to flights that: depart specified airports or centers during a certain time window (timeType=ETD); depart specified airports or centers to arrive at their destinations during a certain time window (timeType=ETA); or arrive at the boundary of a flow constrained area during a certain time window (timeType=FCA Flight List).
type: FunctionalProperty
type: DatatypeProperty

Program arrival rate
subclass of: IntegerParameter
comment: The number of aircraft that the Ground Delay Program (GDP) is to provide to the airport for a given hour.
type: Class

has actual route
range: Actual Flight Route
domain: Flight
comment: Links a flight to its actual trajectory (i.e., a sequence of track points), as determined by flight track surveillance data.
type: ObjectProperty
type: FunctionalProperty

fix ID
range: string
domain: Navigation fix
comment: A non-unique FAA identifier for a fix. When combined with a fix ICAO code, it defines a unique fix worldwide. Often, but not always, the fixId is identical to the fixName.
type: FunctionalProperty
type: DatatypeProperty

issued time
range: dateTime
domain: Traffic management initiative
comment: The time when the traffic management initiative (TMI) was issued.
type: FunctionalProperty
type: DatatypeProperty

previous total delay minutes
range: integer
domain: GDPmodel
comment: The total flight delay experienced prior to the start of a Ground Stop(GS).
type: DatatypeProperty

flight inclusion spec
range: Flight spec
domain: Class
  union of: Ground Delay Program (GDP)
  union of: Ground Stop (GS)
comment: Links a Ground Delay Program (GDP) or a Ground Stop (GS) to a specification of the flight(s) included in the traffic management initiative (TMI).
type: ObjectProperty
type: FunctionalProperty

flight route string
range: string
domain: Planned flight route
comment: A string that provides the route of flight proposed in a flight plan. Syntactically, the string shows a path of fixes, airways, SIDs, and STARs, separated by either one or two dots. The string is parsed to create an equivalent ontology representation: an ordered sequence of navigation elements that are associated directly with the flight plan (atm:PlannedFlightRoute).
type: FunctionalProperty
type: DatatypeProperty

SIDSTARtraverse
subclass of: Navigation element
comment: A route through a SID (Standard Instrument Departure route) or a STAR (Standard Arrival Route), traversing a common route at minimum and optionally a transition route and/or an airport route.
type: Class

plan gap after sequence element number
range: integer
domain: Planned flight route
comment: Indicates the location of a gap in the flight plan due to non-parsable/uninterpretable elements in the flight plan string.
type: DatatypeProperty

effective start day
range: NASday
domain: Traffic management initiative
comment: Links to the expected starting day of the traffic management initiative (TMI).
type: ObjectProperty

must have origin
range: Airport spec
domain: Flight spec
comment: Links a flight specification to an airport specification describing the originating airports for the flights being specified. Any flight covered by the flight specification must have as its origin one of the airports covered by the airport specification.
type: ObjectProperty

includes airway
range: AirspaceRoute
domain: Flight spec
comment: Links a flight specification to one of more airways (routes). Any flight that traverses a linked airway is included in the set of flights covered by this flight specification.
type: ObjectProperty

Traffic management initiative
subclass of: Restriction
  on property: extension probability
  all values from: Datatype
    one of: LOW
    one of: MEDIUM
    one of: HIGH
subclass of: Thing
comment: A Traffic Management Initiative (TMI) is an orchestrated air traffic management procedure implemented as needed to control the flow of air traffic in the NAS based on capacity and demand.
type: Class

true airspeed
range: integer
domain: Flight
comment: The true airspeed of a flight: the speed of the aircraft relative to the airmass in which it is flying.
type: FunctionalProperty
type: DatatypeProperty

adsb ID
range: string
domain: Flight
comment: The unique identifier of the ADS-B (Automatic Dependent Surveillance - Broadcast) transponder unit on board the aircraft for this flight.
type: DatatypeProperty

ReRoute type
range: string
domain: ReRoute
comment: The ReRoute type encodes information about the type of ReRoute being initiated or the reason for the ReRoute. One of the following: ROUTE , PLAYBOOK , CDR, SPECIAL OPERATIONS, NRP SUSPENSIONS, VS , NAT, SHUTTLE ACTIVITY, FCA, FEA, INFORMATIONAL, MISCELLANEOUS.
type: FunctionalProperty
type: DatatypeProperty

reporting time
range: dateTime
domain: Aircraft Track Point
comment: The time when an en route aircraft passed through a trackpoint and reported its position, speed, and heading.
type: FunctionalProperty
type: DatatypeProperty

exempted AFP
range: Airspace Flow Program (AFP)
domain: Flight spec
comment: Links a flight specification to one of more Airspace Flow Program (AFP) traffic management initiatives (TMIs). Any flight included in one of the linked AFPs is excluded from the set of flights covered by this flight specification.
type: ObjectProperty

Crew member
subclass of: Thing
comment: The set of inflight airline personnel operating or performing servicing functions on a flight (pilots and cabin attendants).
type: Class

Planned flight route
subclass of: Navigation path
comment: A planned flight route is an ordered sequence of navigation elements that the pilot intends to traverse en route from origin to destination airport.
type: Class

flight inclusion exclusion
range: Flight spec
domain: ReRoute
comment: Links a ReRoute to a specification of the flight(s) included in or excluded from the ReRoute traffic management initiative (TMI).
type: ObjectProperty
type: FunctionalProperty

within airport bounding region
range: CircularRegion
domain: Airport spec
comment: Links an airport specification to a circular geographic region. Only airports whose locations fall within this region satisfy the specification.
type: ObjectProperty

actual arrival day
range: NASday
domain: Flight
comment: Links a flight with the day on which the flight arrives. This is the day determined by surveillance data sources to be the 'actual' day of arrival, versus the scheduled day or the day specified in the flight plan, etc.
type: ObjectProperty
type: FunctionalProperty

previous maximum delay minutes
range: integer
domain: GDPmodel
comment: The maximum flight delay experienced prior to the start of a Ground Stop(GS).
type: DatatypeProperty

advisory number
range: integer
domain: Traffic management initiative
comment: Advisory number as reported from the FAA Command Center database. it restarts at 001 on every new day UTC.
type: FunctionalProperty
type: DatatypeProperty

impacting condition
range: string
domain: Ground Delay Program (GDP)
comment: Indicates the reason for initiating the Ground Delay Program: weather, volume, runway, equipment, other.
type: DatatypeProperty

radial angle
range: integer
domain: RadialRoute
comment: The angle (in degrees) that defines the radial route's angular position with respect to the defined fix.
type: DatatypeProperty

operating time interval
range: TimeInterval
domain: Flight spec
comment: Links a flight specification to a time interval. Each flight covered by the specification must be airborne sometime during the time period specified by the interval.
type: ObjectProperty

Airspace route segment
subclass of: Restriction
  on property: subsequenceOf
  all values from: AirspaceRoute
subclass of: Navigation SubPath
comment: A contiguous portion of an existing airspace route.
type: Class

aircraft count
range: integer
domain: Aircraft flow
comment: The number of aircraft flowing through an airspace region per some interval of time.
type: DatatypeProperty

Navigation SubPath
subclass of: SubSequence
subclass of: Navigation element
comment: A contiguous portion of an existing navigation path.
type: Class

GDPmodel
subclass of: Restriction
  on property: delay assignment mode
  all values from: Datatype
    one of: DAS
    one of: GAAP
    one of: UDP
subclass of: Thing
comment: This class represents a computational delay model used in assigning times to the aircraft involved in the GDP or GS. The properties of this class correspond to parameters that are used by the delay model to compute the delay times.
type: Class

Lat-lon fix
subclass of: Absolute fix
comment: A navigation fix based on latitude/longitude coordinates.
type: Class

Airport Fix
subclass of: VOR Fix
comment: A subclass of navigation fix corresponding to fixes associated directly with a ground reference point that is an airport.
type: Class

Flight plan segment
subclass of: Restriction
  on property: subsequenceOf
  all values from: Planned flight route
subclass of: Navigation SubPath
comment: A contiguous portion of a complete flight plan.
type: Class

arrival runway
range: OperationalRunway
domain: Flight
comment: Links to the actual arrival runway for the flight.
type: ObjectProperty
type: FunctionalProperty

includes fix
range: Navigation fix
domain: Flight spec
comment: Links a flight specification to one of more navigation fixes. Any flight that traverses a linked fix is included in the set of flights covered by this flight specification.
type: ObjectProperty

Ground Delay Program (GDP)
subclass of: Restriction
  on property: controlled NASelement
  cardinality: 1
subclass of: Restriction
  on property: impacting condition
  all values from: Datatype
    one of: weather
    one of: volume
    one of: runway
    one of: equipment
    one of: other
subclass of: Restriction
  on property: controlled NASelement
  all values from: Airport
subclass of: Traffic management initiative
comment: A Ground Delay Program (GDP) traffic management initiative (TMI). A Ground Delay Program (GDP) is a traffic management procedure where aircraft are delayed at their departure airport in order to manage demand and capacity at their arrival airport.
type: Class

previous average delay minutes
range: integer
domain: GDPmodel
comment: The average flight delay experienced prior to the start of a Ground Stop(GS).
type: DatatypeProperty

aircraft flown
range: Aircraft
domain: Flight
comment: Links a flight with the actual aircraft used.
type: ObjectProperty
type: FunctionalProperty

Navigation path
subclass of: Restriction
  on property: hasSequencedItem
  all values from: Navigation element container
subclass of: Restriction
  on property: hasLastItem
  all values from: Navigation element container
subclass of: Restriction
  on property: hasFirstItem
  all values from: Navigation element container
subclass of: Sequence
subclass of: Navigation element
comment: An ordered sequence of navigation elements (fixes, routes, airports) representing a path through the airspace.
type: Class

VOR Fix
subclass of: NavaidFix
comment: A fix based on the location of a ground-based VOR (VHF Omni Directional Radio Range) installation.
type: Class

NavaidFix
subclass of: Absolute fix
comment: A fix based on the location of a ground-based Navigation Aid (Navaid) installation.
type: Class

operating carrier
range: AirCarrier
domain: Flight spec
comment: Links a flight specification to one or more carrier airline(s). Each flight covered by the specification must be operated by one of these carriers.
type: ObjectProperty

modeled average delay minutes
range: integer
domain: GDPmodel
comment: The average flight delay specified when modeling a Ground Delay Program (GDP) or Ground Stop(GS).
type: FunctionalProperty
type: DatatypeProperty

Actual Flight Route
subclass of: Restriction
  on property: hasSequencedItem
  all values from: Aircraft Track Point
subclass of: Restriction
  on property: hasLastItem
  all values from: Aircraft Track Point
subclass of: Restriction
  on property: hasFirstItem
  all values from: Aircraft Track Point
subclass of: Sequence
comment: A flight trajectory (i.e., a sequence of track points), as determined by flight track surveillance data.
type: Class

modeled by
range: GDPmodel
domain: Class
  union of: Ground Delay Program (GDP)
  union of: Ground Stop (GS)
comment: Links a Ground Delay Program (GDP) or a Ground Stop (GS) to a representation of the model used to design that initiative. The model contains all relevant parameters used to create the initiative.
type: ObjectProperty
type: FunctionalProperty

GDPmodel
comment: This model provides parameters to the code that assigns times to the aircraft involved in the GDP or GS

has numeric parameter
range: NumericParameter
domain: Numeric parameter container
comment: Links a container for a numerical parameter to the numerical parameter contained.
type: ObjectProperty
type: FunctionalProperty

published departure time
range: dateTime
domain: Flight
comment: The time that the flight is planned to depart per the OAG schedule.
type: FunctionalProperty
type: DatatypeProperty

departure taxi path
range: Taxipath
domain: Flight
comment: Links to the taxipath followed by the flight en route to the runway.
type: ObjectProperty
type: FunctionalProperty

modeled maximum delay minutes
range: integer
domain: GDPmodel
comment: The maximum flight delay specified when modeling a Ground Delay Program (GDP) or Ground Stop(GS).
type: FunctionalProperty
type: DatatypeProperty

Flight spec
subclass of: Thing
subclass of: Restriction
  on property: time constraint type
  all values from: Datatype
    one of: ETD
    one of: ETA
subclass of: Restriction
  on property: includes aircraft class
  all values from: Datatype
    one of: Jet
    one of: Prop
    one of: Jet and Prop
    one of: Turbo
    one of: All
subclass of: Restriction
  on property: time constraint type
  cardinality: 1
subclass of: Restriction
  on property: aircraft weight category
  cardinality: 1
type: Class
subclass of: Restriction
  on property: user category
  cardinality: 1
subclass of: Restriction
  on property: user category
  all values from: Datatype
    one of: GA
    one of: Air Taxi
    one of: Cargo
    one of: Commercial
    one of: Military
subclass of: Restriction
  on property: includes aircraft class
  cardinality: 1
subclass of: Restriction
  on property: aircraft weight category
  all values from: Datatype
    one of: large
    one of: heavy
    one of: small
comment: A specification describing a set of flights.

impacting condition message
range: string
domain: Ground Delay Program (GDP)
comment: A free-text descriptoin elaborating on the reason for initiating the Ground Delay Program.
type: FunctionalProperty
type: DatatypeProperty

operated by
range: AirCarrier
domain: Flight
comment: Links a flight to its carrier airline.
type: ObjectProperty
type: FunctionalProperty

fix trajectory string
range: string
domain: Flight
comment: This is an experimental property of a flight that stores an ordered sequence of named fixes corresponding one-to-one to the sequence of trajectory track points recorded for the flight. For a given track point, the corresponding named fix is computed by finding the closest named fix to the track point.
type: FunctionalProperty
type: DatatypeProperty

departure scope
range: Airport spec
domain: Class
  union of: Ground Delay Program (GDP)
  union of: Ground Stop (GS)
comment: Links a Ground Delay Program (GDP) or a Ground Stop (GS) to a specification of the departure airport(s) participating in the traffic management initiative (TMI).
type: ObjectProperty
type: FunctionalProperty

excludes fix
range: Navigation fix
domain: Flight spec
comment: Links a flight specification to one of more navigation fixes. Any flight that traverses a linked fix is excluded from the set of flights covered by this flight specification.
type: ObjectProperty

Aircraft flow
subclass of: Aircraft flow capacity
comment: A subclass of interval-based data representing the number of aircraft flowing through an airspace region during some interval of time.
type: Class

modeled arrival rate
range: Program Arrival Rate Sequence
domain: GDPmodel
comment: Links a delay model used in defining a Ground Delay Program (GDP) or Ground Stop(GS) to a sequence of desired hourly aircraft arrival rates specified for the initiative.
type: ObjectProperty
type: FunctionalProperty

GPS fix
subclass of: Lat-lon fix
comment: A navigation fix defined by GPS coordinates.
type: Class

has navigation element
range: Navigation element
domain: Navigation element container
comment: Links a container for a navigational element to the element contained.
type: ObjectProperty
type: FunctionalProperty

relative distance
range: integer
domain: Relative fix
comment: The distance (in nautical miles) between a relative fix and its defining (absolute) fix.
type: FunctionalProperty
type: DatatypeProperty

aircraft fix
range: Navigation fix
domain: Aircraft Track Point
comment: Links an aircraft track point with its associated navigation fix.
type: ObjectProperty
type: FunctionalProperty

plan filing day
range: NASday
domain: Planned flight route
comment: Links to the day when the flight plan was filed with the FAA.
type: ObjectProperty
type: FunctionalProperty

has planned route
range: Planned flight route
domain: Flight
comment: Links a flight to a version of its flight plan. (Which version gets stored is application-dependent.) There are multiple versions of the flight plan generated and then amended during the course of the flight, starting in the pre-flight timeframe and extending through to the termination of the flight.
type: ObjectProperty

initiativeComments
range: string
domain: Traffic management initiative
comment: Provides any specific comments on the traffic management initiative (TMI) made by the issuing authority (e.g., ATCSCC, ARTCC).
type: FunctionalProperty
type: DatatypeProperty

Ground Stop (GS)
subclass of: Restriction
  on property: extension probability
  cardinality: 1
subclass of: Restriction
  on property: controlled NASelement
  cardinality: 1
subclass of: Restriction
  on property: impacting condition
  all values from: Datatype
    one of: weather
    one of: volume
    one of: runway
    one of: equipment
    one of: other
subclass of: Restriction
  on property: extension probability
  all values from: Datatype
    one of: NONE
    one of: LOW
    one of: MEDIUM
    one of: HIGH
subclass of: Restriction
  on property: controlled NASelement
  all values from: Airport
subclass of: Traffic management initiative
comment: A Ground Stop (GS) traffic management initiative (TMI). A ground stop is a procedure requiring aircraft that meet specific criteria to remain on the ground. The GS may be airport specific, related to a geographical area, or equipment related.
type: Class

Numeric parameter container
subclass of: SequencedItem
comment: A wrapper around a numeric parameter. Containers can be sequenced to create an ordered list of numeric parameters.
type: Class

issued day
range: NASday
domain: Traffic management initiative
comment: Links to the day when the traffic management initiative (TMI) was issued.
type: ObjectProperty

excludes airway
range: AirspaceRoute
domain: Flight spec
comment: Links a flight specification to one of more airways (routes). Any flight that traverses a linked airway is excluded from the set of flights covered by this flight specification.
type: ObjectProperty

aircraft weight category
range: string
domain: Flight spec
comment: Indicates the weight category as part of a flight specification constraint.
type: FunctionalProperty
type: DatatypeProperty

planned departure day
range: NASday
domain: Flight
comment: Links to the day that the flight is planned to depart per the flight plan.
type: ObjectProperty
type: FunctionalProperty

uses airport route
range: AirportRoute
domain: SIDSTARtraverse
comment: Links a SIDSTARtraverse (a path through a SID/STAR) to the airport route used in making the traverse.
type: ObjectProperty

delay assignment mode
range: string
domain: GDPmodel
comment: The type of delay assignment mode specified for this delay model: DAS, GAAP, or UDP.
type: FunctionalProperty
type: DatatypeProperty

Airport spec
subclass of: Restriction
  on property: includes airport type
  all values from: Datatype
    one of: all
    one of: US
    one of: CONUS
    one of: NonCONUS
    one of: International
    one of: Canadian
subclass of: Thing
comment: A specification of a set of airports.
type: Class

relative angle
range: integer
domain: Relative fix
comment: The angular direction in degrees (1-360) of a relative fix with respect to its defining absolute fix.
type: FunctionalProperty
type: DatatypeProperty

adl time
range: dateTime
domain: GDPmodel
comment: The timestamp of the ADL (Aggregate Demand List) that the delay model is based upon. Each ADL contains information on the flights arriving and departing from an airport, or entering into and departing from a flow area.
type: FunctionalProperty
type: DatatypeProperty

Program arrival rate container
subclass of: Restriction
  on property: has numeric parameter
  all values from: Program arrival rate
subclass of: Numeric parameter container
comment: A wrapper around a program arrival rate, used to sequence them into an ordered list.
type: Class

Miles in Trail (MIT)
subclass of: Traffic management initiative
comment: A Miles-in-Trail (MIT) traffic management initiative (TMI) is used to apportion traffic into a manageable flow, as well as provide space for additional traffic (merging or departing) to enter the flow of traffic. Miles-in-trail describes the number of miles required between aircraft departing an airport, over a fix, at an altitude, through a sector, or on a specific route.
type: Class

includes flight
range: Flight
domain: Flight spec
comment: Links a flight specification to one of more flights. Any linked flight is included in the set of flights covered by this flight specification.
type: ObjectProperty

includes aircraft class
range: string
domain: Flight spec
comment: Indicates which class of aircraft the flights defined by this specification must employ: jet, prop, jet and prop, turbo, all.
type: FunctionalProperty
type: DatatypeProperty

adl day
range: NASday
domain: GDPmodel
comment: Links a delay model to the day that the ADL (Aggregate Demand List) was generated. Each ADL contains information on the flights arriving and departing from an airport, or entering into and departing from a flow area.
type: ObjectProperty
type: FunctionalProperty

Flight
subclass of: Restriction
  on property: user category
  all values from: Datatype
    one of: GA
    one of: Air Taxi
    one of: Cargo
    one of: Commercial
    one of: Military
subclass of: Thing
comment: A single flight segment from origin to destination.
type: Class

flight plan ETA
range: dateTime
domain: Planned flight route
comment: The estimated time of arrival specified in the flight plan.
type: FunctionalProperty
type: DatatypeProperty

located in sector
range: Sector
domain: Navigation fix
comment: Links a navigation fix to the airspace sector in which that fix is located.
type: ObjectProperty

excludes flight
range: Flight
domain: Flight spec
comment: Links a flight specification to one of more flights. Any linked flight is excluded from the set of flights covered by this flight specification.
type: ObjectProperty

uses transition route
range: TransitionRoute
domain: SIDSTARtraverse
comment: Links a SIDSTARtraverse (a path through a SID/STAR) to the transition route used in making the traverse.
type: ObjectProperty

effective start time
range: dateTime
domain: Traffic management initiative
comment: The expected start time of the traffic management initiative (TMI).
type: FunctionalProperty
type: DatatypeProperty

Navigation fix
subclass of: Navigation element
comment: A designated point on the surface of the earth used for aeronautical navigation.
type: Class

Navigation element container
subclass of: SequencedItem
comment: A navigation element container is a wrapper around an existing navigation element, such as a fix or a route. These containers can be sequenced together to represent flight paths and flight trajectories.
type: Class

tracon ID
range: string
domain: Flight
comment: Three letter FAA TRACON identifier code.
type: DatatypeProperty

planned arrival day
range: NASday
domain: Flight
comment: Links to the day that the flight is planned to arrive per the flight plan.
type: ObjectProperty
type: FunctionalProperty

published arrival day
range: NASday
domain: Flight
comment: Links to the day that the flight is planned to arrive per the OAG schedule.
type: ObjectProperty
type: FunctionalProperty

excludes ARTCC
range: Class
  union of: ARTCC
  union of: ARTCCtier
domain: Airport spec
comment: Links an airport specification to one of more ARTCCs (Centers) or ARTCC tiers (Centers radiating out from a give ARTCC). Any airport within the ARTCC or ARTCC tier is excluded from the set of airports covered by this airport specification.
type: ObjectProperty

re route path
range: Planned flight route
domain: ReRoute segment
comment: Links a route segment alternative (specified as part of a ReRoute traffic management initiative) to its associated flight plan.
type: ObjectProperty
type: FunctionalProperty

aircraft type flown
range: AircraftType
domain: Flight
comment: Links a flight with the type of aircraft flown. The aircraft 'type' corresponds to a set of aircraft models with similar characteristics.
type: ObjectProperty
type: FunctionalProperty

fix name
range: string
domain: Navigation fix
comment: A unique FAA identier for a fix that can be filed as part of a flight plan. The fix name conceptually represents the worldwide-unique combination of a FixID and ICAO code. Often, but not always, the fixId is identical to the fixName.
type: FunctionalProperty
type: DatatypeProperty

TFM control element
subclass of: Thing
comment: Any NAS entity that is potentially controlled via a TFM initiative.
type: Class

Absolute fix
subclass of: PointLocation
subclass of: Navigation fix
comment: A fix based on some established global measuring scheme.
type: Class

reporting day
range: NASday
domain: Aircraft Track Point
comment: A link between an aircraft track point and the day during which an en route aircraft traversed that point and reported its position, speed, and heading.
type: ObjectProperty
type: FunctionalProperty

published arrival time
range: dateTime
domain: Flight
comment: The time that the flight is planned to arrive per the OAG schedule.
type: FunctionalProperty
type: DatatypeProperty

must have destination
range: Airport spec
domain: Flight spec
comment: Links a flight specification to an airport specification describing the destination airports for the flights being specified. Any flight covered by the flight specification must have as its destination one of the airports covered by the airport specification.
type: ObjectProperty

Aircraft flow capacity
comment: A subclass of interval-based data representing the maximum controllable number of aircraft flowing through an airspace region during some interval of time, given weather and other air traffic control constraints.
type: Class

reroute constraint
range: Flight spec
domain: ReRoute segment
comment: Links a route segment specified as part of a ReRoute traffic management initiative (TMI) to a flight specification indicating which flights are permitted to follow the route segment.
type: ObjectProperty
type: FunctionalProperty

time constraint type
range: string
domain: Flight spec
comment: Specifies the type of flight time being constrained in this flight specification: either ETA (estimated arrival time) or ETD (estimated departure time).
type: FunctionalProperty
type: DatatypeProperty

arrival taxi path
range: Taxipath
domain: Flight
comment: Links to the taxipath followed by the flight en route to the gate.
type: ObjectProperty
type: FunctionalProperty

Popup Factor Sequence
subclass of: Restriction
  on property: hasSequencedItem
  all values from: Popup Factor container
subclass of: Restriction
  on property: hasLastItem
  all values from: Popup Factor container
subclass of: Restriction
  on property: hasFirstItem
  all values from: Popup Factor container
subclass of: Sequence
comment: An ordered sequence of hourly popup factors used in specifying a Ground Delay Program (GDP).
type: Class

actual departure time
range: dateTime
domain: Flight
comment: The time determined by surveillance data sources to be the 'actual' time of flight departure, versus the scheduled time or the time specified in the flight plan, etc.
type: FunctionalProperty
type: DatatypeProperty

arrival airport
range: Airport
domain: Flight
comment: Links to the actual arrival airport for the flight.
type: ObjectProperty
type: FunctionalProperty

Intersection fix
subclass of: Absolute fix
comment: A navigation fix defined by the intersection of two airspace routes.
type: Class

Program Arrival Rate Sequence
subclass of: Restriction
  on property: hasSequencedItem
  all values from: Program arrival rate container
subclass of: Restriction
  on property: hasLastItem
  all values from: Program arrival rate container
subclass of: Restriction
  on property: hasFirstItem
  all values from: Program arrival rate container
subclass of: Sequence
comment: An ordered sequence of hourly program arrival rates used in specifying a Ground Dela Program (GDP).
type: Class

radial fix
range: Navigation fix
domain: RadialRoute
comment: Links to the fix through which the radial route passes.
type: ObjectProperty

implementation status
range: string
domain: ReRoute
comment: Indicates the enforcement status of the ReRoute advisory: RQD (required), RMD (recommended), PLN (planned for implementation), FYI (informational only)
type: FunctionalProperty
type: DatatypeProperty

ReRoute segment
subclass of: Restriction
  on property: re route segment type
  all values from: Datatype
    one of: origin
    one of: destination
    one of: origin-destination
subclass of: Thing
comment: One of the route segment alternatives specified as part of a ReRoute traffic management initiative (TMI).
type: Class

TACAN Fix
subclass of: NavaidFix
comment: A fix based on the location of a ground-based TACAN (TACtical Air Navigation) installation.
type: Class

heading
range: float
domain: Aircraft Track Point
comment: The aircraft heading at the track point: a number between 0.01 and 360.0 indicating the angular heading with respect to North.
type: FunctionalProperty
type: DatatypeProperty

NDB Fix
subclass of: NavaidFix
comment: A fix based on the location of a ground-based non-directional radio beacon (NDB) installation. NDB signals follow the curvature of the Earth, so they can be received at much greater distances at lower altitudes, a major advantage over VOR. However, NDB signals are also affected more by atmospheric conditions, mountainous terrain, coastal refraction and electrical storms, particularly at long range.
type: Class

included flights
range: Flight spec
domain: Aircraft flow
comment: Links an aircraft flow to a specification of the flights included in the flow.
type: ObjectProperty

flight exclusion spec
range: Flight spec
domain: Ground Delay Program (GDP)
comment: Links a Ground Delay Program (GDP) or a Ground Stop (GS) to a specification of the flight(s) excluded from the traffic management initiative (TMI).
type: ObjectProperty
type: FunctionalProperty

includes airport
range: Airport
domain: Airport spec
comment: Links an airport specification to one of more airports. Any airport linked is included in the set of airports covered by this airport specification. This property allows for explicit specification of a list of specific airports; the property atm:includesAirportType allows for the the implicit specification of an entire class of airports.
type: ObjectProperty

Aircraft capacity
subclass of: Aircraft flow capacity
comment: A subclass of interval-based data representing the maximum number of controllable aircraft flowing through an airspace region during some interval of time.
type: Class

max flow capacity
range: float
domain: TFM control element
comment: The absolute maximum controllable number of aircraft flowing through an airspace region per some interval of time under any air traffic conditions.
type: DatatypeProperty

controlled NASelement
range: TFM control element
domain: Traffic management initiative
comment: Links a traffic management initiative (TMI) to the airspace element being controlled by the TMI (e.g., an airport).
type: ObjectProperty

Popup Factor container
subclass of: Restriction
  on property: has numeric parameter
  all values from: Popup factor
subclass of: Numeric parameter container
comment: A wrapper around a popup factor parameter. Used to sequence popup factors in the specification of a Ground Delay Program (GDP).
type: Class

allowed route
range: ReRoute segment
domain: ReRoute
comment: In a reRoute traffic management initiative, there are multiple allowed routes specified between origin and destination. This property links a ReRouteTMI with its allowed routes.
type: ObjectProperty

flow measurement region
range: TFM control element
domain: Aircraft flow capacity
comment: Links an aircraft capacity or aircraft flow to the spatial region through which flow or capacity is being monitored and measured.
type: ObjectProperty

cruising altitude
range: integer
domain: Flight
comment: The cruising altitude (in number of feet) specified in the flight plan for this flight.
type: FunctionalProperty
type: DatatypeProperty

actual departure day
range: NASday
domain: Flight
comment: Links a flight with the day on which the flight departs. This is the day determined by surveillance data sources to be the 'actual' day of departure, versus the scheduled day or the day specified in the flight plan, etc.
type: ObjectProperty
type: FunctionalProperty

plan filing time
range: dateTime
domain: Planned flight route
comment: The time that the flight plan was filed with the FAA.
type: FunctionalProperty
type: DatatypeProperty

reroute reason
range: string
domain: ReRoute
comment: Provides the reason for initiating a ReRoute: WEATHER , VOLUME , EQUIPMENT , RUNWAY/TAXIWAY , OTHER.
type: DatatypeProperty

extension probability
range: string
domain: Traffic management initiative
comment: The probability that this traffic management initiative (TMI) will be extended: LOW, MEDIUM, or HIGH.
type: DatatypeProperty

user category
range: string
domain: Class
  union of: Flight spec
  union of: Flight
comment: The type of airspace user that this flight represents: GA, Air Taxi, Cargo, Commercial, Military. Also used to constrain a flight specification to contain only flights representing a specific user category.
type: FunctionalProperty
type: DatatypeProperty

planned departure time
range: dateTime
domain: Flight
comment: The time that the flight is planned to depart per the flight plan.
type: FunctionalProperty
type: DatatypeProperty

effective end time
range: dateTime
domain: Traffic management initiative
comment: The expected end time of the traffic management initiative (TMI).
type: FunctionalProperty
type: DatatypeProperty

excludes airport
range: Airport
domain: Airport spec
comment: Links an airport specification to one of more airports. Any airport linked is excluded from the set of airports covered by this airport specification.
type: ObjectProperty

Aircraft Track Point
subclass of: SequencedItem
comment: A point during a flight where various flight parameters are captured and sent (via transponder) to FAA computers.
type: Class

ATM
version info: Created with TopBraid Composer
imports: NAS
type: Ontology

Taxipath
subclass of: Restriction
  on property: hasSequencedItem
  all values from: Taxiway
subclass of: Restriction
  on property: hasLastItem
  all values from: Taxiway
subclass of: Restriction
  on property: hasFirstItem
  all values from: Taxiway
subclass of: Sequence
comment: A sequence of taxiways followed by an aircraft taxiing en route to/from a runway.
type: Class

modeled pop up factor
range: Popup Factor Sequence
domain: GDPmodel
comment: Links a delay model used in defining a Ground Delay Program (GDP) or Ground Stop(GS) to a sequence of desired hourly popup factors specified for the initiative. 'Popups' account for late-filing flights (unexpected/unplanned flights) when modeling delays as part of a traffic management initiative (TMI) design process.
type: ObjectProperty
type: FunctionalProperty

effective end day
range: NASday
domain: Traffic management initiative
comment: Links to the expected ending day of the traffic management initiative (TMI).
type: ObjectProperty

within ARTCC
range: Class
  union of: ARTCC
  union of: ARTCCtier
domain: Airport spec
comment: Links an airport specification to an ARTCC or ARTCC tier. Only airports within the ARTCC or ARTCC tier are covered by the specification.
type: ObjectProperty

traverses SIDSTAR
range: SIDSTAR
domain: SIDSTARtraverse
comment: Links a SIDSTARtraverse (i.e., a specific route through a SID or STAR) to the specific SID or STAR being traversed by a given flight.
type: ObjectProperty

ReRoute
type: Class
subclass of: Restriction
  on property: extension probability
  all values from: Datatype
    one of: NONE
    one of: LOW
    one of: MEDIUM
    one of: HIGH
subclass of: Restriction
  on property: ReRoute time type
  cardinality: 1
subclass of: Restriction
  on property: ReRoute time type
  all values from: Datatype
    one of: ETD
    one of: ETA
    one of: FCA Flight List
subclass of: Restriction
  on property: extension probability
  cardinality: 1
subclass of: Restriction
  on property: ReRoute type
  all values from: Datatype
    one of: ROUTE
    one of: PLAYBOOK
    one of: CDR
    one of: SPECIAL OPERATIONS
    one of: NRP SUSPENSIONS
    one of: VS
    one of: NAT
    one of: SHUTTLE ACTIVITY
    one of: FCA
    one of: FEA
    one of: INFORMATIONAL
    one of: MISCELLANEOUS
subclass of: Restriction
  on property: ReRoute type
  cardinality: 1
subclass of: Restriction
  on property: reroute reason
  cardinality: 1
subclass of: Restriction
  on property: implementation status
  cardinality: 1
subclass of: Traffic management initiative
comment: A ReRoute is a traffic management initiative (TMI) that mandates a change in the filed flight plan for a set of specified flights. There are multiple factors that might justify a reroute, including weather, traffic congestion, unusual airspace activity, etc. The substitute flight plans route air traffic around the airspace problem area.
subclass of: Restriction
  on property: reroute reason
  all values from: Datatype
    one of: WEATHER
    one of: VOLUME
    one of: EQUIPMENT
    one of: RUNWAY/TAXIWAY
    one of: OTHER
subclass of: Restriction
  on property: implementation status
  all values from: Datatype
    one of: FYI
    one of: PLN
    one of: RMD
    one of: RQD

referenceFix
range: Absolute fix
domain: Relative fix
comment: Links a relative fix to the absolute fix that serves as the basis for its location. (A relative fix position is defined relative to an absolute fix position, e.g. as a vector offset from the absolute fix.)
type: ObjectProperty
type: FunctionalProperty

departure runway
range: OperationalRunway
domain: Flight
comment: Links to the actual departure runway for the flight.
type: ObjectProperty
type: FunctionalProperty

call sign
range: string
domain: Flight
comment: The flight identifier (3-letter ICAO code plus number).
type: DatatypeProperty

departure airport
range: Airport
domain: Flight
comment: Links to the actual departure airport for the flight.
type: ObjectProperty
type: FunctionalProperty

ground speed
range: integer
domain: Aircraft Track Point
comment: The reported ground speed at an aircraft track point.
type: FunctionalProperty
type: DatatypeProperty

Navigation element
subclass of: TFM control element
comment: A navigation element is a set of components that can be used to assemble a flight plan or trajectory. They include fixes, routes, airports, SID/STAR traverses, etc.
type: Class

planned arrival time
range: dateTime
domain: Flight
comment: The time that the flight is planned to arrive per the flight plan.
type: FunctionalProperty
type: DatatypeProperty

modeled total delay minutes
range: integer
domain: GDPmodel
comment: The total flight delay specified when modeling a Ground Delay Program (GDP) or Ground Stop(GS).
type: FunctionalProperty
type: DatatypeProperty

FRD Fix
subclass of: Relative fix
comment: A Fix Radial Distance (FRD) fix is located a specified distance from a ground-based navaid, a named fix, or an airport, along a given radial vector.
type: Class

re route segment type
range: string
domain: ReRoute segment
comment: Indicates which type of ReRoute segment: origin , destination, origin-destination. A ReRoute segment can be a entire route between origin and destination, or a partial route leading from an origin or leading to a destination.
type: DatatypeProperty

Airspace Flow Program (AFP)
subclass of: Traffic management initiative
comment: A subclass of Traffic Management Initiative involving control and metering of air traffic through specified airspace volumes.
type: Class

Popup factor
subclass of: IntegerParameter
comment: Factor to account for late-filing flights when modeling delays as part of a traffic management initiative (TMI) design process.
type: Class

Relative fix
subclass of: Navigation fix
comment: A fix defined in relation to another fix.
type: Class