Aircraft
The unified aircraft graph: controls, propulsion, systems, avionics, navigation, and automation.
USI.Core
A named air-data computer.
AirDrivenGeneratorUSI.CoreClassA deployable air-driven electrical generator that is distinct from the aircraft's ram-air-turbine emergency generator.
AirTemperatureSensorUSI.CoreClassA named pilot, copilot, or standby air-temperature sensor.
AircraftUSI.CoreClassStable root for the currently loaded aircraft. Child component objects are generation-bound and replaced atomically when the aircraft changes.
AircraftAerodynamicReferenceCharacteristicsUSI.CoreStructAircraft-authored aerodynamic and static-pitch reference characteristics.
AircraftAirbornePlacementUSI.CoreClassA provider-neutral airborne starting point for the user aircraft. USI applies all fields as one simulator operation.
AircraftAutopilotTopologyUSI.CoreClassDescribes autopilot-channel access points captured for one loaded-aircraft graph. Unknown entries remain usable when a provider exposes a channel but cannot prove its physical installation.
AircraftAuxiliaryPowerUnitSystemUSI.CoreClassProvides developer-friendly APU selections without exposing simulator switch enums, generator numbering, or pneumatic variable names.
AircraftAvionicsTopologyUSI.CoreStructDescribes the named radio access points exposed for the currently loaded aircraft. Counts use the developer-facing one-based component names (for example, Com1). Installation states distinguish authoritative equipment discovery from a provider's addressable radio slots.
AircraftBodyLoadFactorsUSI.CoreStructLoad factors resolved along the aircraft's normal, axial, and lateral body axes, in multiples of standard gravity.
AircraftCabinSystemUSI.CoreClassProvides developer-friendly occupant-facing state without exposing simulator-native switch or canopy names.
AircraftCapabilityIdsUSI.CoreStatic classStable IDs for the initial aircraft capability-discovery surface.
AircraftCenterOfGravityEnvelopeUSI.CoreClassAircraft-authored center-of-gravity limits relative to the aircraft reference point using signed aircraft axes and the selected length unit.
AircraftCenterOfGravityPositionUSI.CoreClassCurrent center-of-gravity position relative to the aircraft reference point in signed aircraft axes using the session's selected length unit.
AircraftClassificationUSI.CoreEnumProvider-authored classifications of the loaded aircraft. Multiple flags may be present because, for example, a cargo aircraft may also be an airliner or military aircraft.
AircraftClockUSI.CoreClassA named aircraft clock. Time-of-day values reuse USI's normalized simulator clock; presentation state remains an aircraft-avionics fact.
AircraftClockDisplayModeUSI.CoreEnumThe presentation selected on an aircraft clock.
AircraftComponentUSI.CoreAbstract classAircraftComponentGroupUSI.CoreAbstract classAircraftComponentInstallationStateUSI.CoreEnumInstallation evidence captured for this component's aircraft graph.
AircraftComponentLifecycleStateUSI.CoreEnumDescribes whether an aircraft component still belongs to the currently loaded aircraft graph.
AircraftComponentNodeUSI.CoreAbstract classAircraftCrashCauseUSI.CoreEnumProvider-neutral cause of the current aircraft crash state.
AircraftCrashedEventArgsUSI.CoreClassDescribes a newly reported crash of the user aircraft.
AircraftDynamicsUSI.CoreClassProvides developer-friendly aircraft dynamics without exposing SimVars or DataRefs.
AircraftElectricalTopologyUSI.CoreStructConfigured component counts for the currently loaded aircraft's electrical system. These authoritative installed counts are distinct from the number of discoverable logical access points in a component collection.
AircraftFlightAssistanceSystemUSI.CoreClassAutomated pilot-assistance state for the currently loaded aircraft.
AircraftFlightPlanUSI.CoreClassDeveloper-facing flight-plan abstraction for the currently loaded aircraft. Native GPS and FMS implementations are reconciled here.
AircraftForceAndMomentSnapshotUSI.CoreClassExact force and moment decomposition reported by the provider's flight model. Sources remain separate so totals are not confused with causes.
AircraftFuelSelectorDefinitionUSI.CoreClassStable metadata for one loaded-aircraft fuel selector.
AircraftFuelSelectorTopologyUSI.CoreClassLoaded-aircraft fuel-selector topology, only returned when a count is established.
AircraftFuelSystemSideUSI.CoreEnumSide of an aircraft fuel system.
AircraftFuelTankDefinitionUSI.CoreClassStable metadata for one loaded-aircraft fuel tank.
AircraftFuelTopologyUSI.CoreClassDescribes the fuel tanks observable for the loaded aircraft. Public tank numbers are stable, one-based identities and never expose a provider's native array slot or SimVar selector.
AircraftIdentityUSI.CoreClassProvides developer-friendly identity and configuration values for the currently loaded user aircraft without exposing simulator-native names.
AircraftIdentitySnapshotUSI.CoreClassA provider-neutral identity snapshot for a loaded aircraft.
AircraftInstrumentUSI.CoreClassAircraftInteractionUSI.CoreClassAircraftInteractionArgumentUSI.CoreStructOne typed value supplied when invoking an aircraft interaction.
AircraftInteractionArgumentKindUSI.CoreEnumThe type of one argument accepted by an aircraft interaction.
AircraftInteractionChangedEventArgsUSI.CoreClassDescribes one observed aircraft-authored interaction change.
AircraftInteractionParameterUSI.CoreClassOne typed position in an aircraft interaction's invocation schema.
AircraftInteractionValueUSI.CoreClassA typed value published by an aircraft-authored interaction.
AircraftInteractionValueKindUSI.CoreEnumThe value shape published by an aircraft-authored interaction.
AircraftLandingGearAssemblyDefinitionUSI.CoreClassStable metadata for one authored landing-gear assembly.
AircraftLandingGearTopologyUSI.CoreClassDescribes the landing-gear assemblies authored for the loaded aircraft. Public numbers are stable and one-based; provider array slots remain an implementation detail.
AircraftLateralCenterOfGravityEnvelopeUSI.CoreClassAircraft-authored lateral center-of-gravity limits expressed as signed rightward distances relative to the aircraft reference point using the session's selected length unit.
AircraftLoadFactorExtremaUSI.CoreStructMinimum and maximum load factors attained over the provider's current observation interval, in multiples of standard gravity.
AircraftLongitudinalCenterOfGravityEnvelopeUSI.CoreClassAircraft-authored longitudinal center-of-gravity limits expressed as percent mean aerodynamic chord.
AircraftMotionSnapshotUSI.CoreClassImmutable, simulator-neutral snapshot of the aircraft's aerodynamic and three-axis translational/angular motion.
AircraftOxygenSystemUSI.CoreClassProvides developer-friendly aircraft oxygen state without exposing provider-native DataRefs or override mechanisms.
AircraftPayloadStationDefinitionUSI.CoreClassStable metadata for one loaded-aircraft payload station.
AircraftPayloadTopologyUSI.CoreClassDescribes the payload-station graph configured by the loaded aircraft. Station numbers are one-based public identities and never expose a simulator's native array or SimVar index.
AircraftPerformanceLimitsUSI.CoreClassProvides aircraft performance limits in stable aviation units without exposing simulator-native configuration names.
AircraftPositionUSI.CoreClassAircraftPressurizationSystemUSI.CoreClassProvides actual cabin pressurization telemetry in stable aviation units.
AircraftPrimaryPropulsionTypeUSI.CoreEnumBroad simulator-neutral classification of the user aircraft's primary propulsion system. Provider-specific engine subtypes are intentionally normalized into stable categories.
AircraftRadioUSI.CoreAbstract classAircraftRadioOperationalStatusUSI.CoreEnumNormalized operating condition of an aircraft radio.
AircraftRelativePositionUSI.CoreStructBody-axis position using the developer's selected length unit.
AircraftRelativePositionFeetUSI.CoreStructA position relative to the aircraft authoring origin, expressed in feet along developer-facing forward, rightward, and upward body axes.
AircraftRelocatedEventArgsUSI.CoreClassDescribes a provider-reported user-aircraft relocation.
AircraftRelocationKindUSI.CoreEnumIdentifies why the simulator repositioned the user aircraft.
AircraftRotationalInertiaPerUnitMassUSI.CoreClassAircraft rotational inertia divided by aircraft mass, expressed about the conventional roll, pitch, and yaw axes using the selected area unit.
AircraftRotationalInertiaTensorUSI.CoreClassAircraft rotational inertia about its conventional axes, including the provider's documented cross-coupled term, using the session's selected moment-of-inertia unit.
AircraftSensorHeaterKindUSI.CoreEnumKind of flight sensor protected by a named heater.
AircraftSensorPositionUSI.CoreEnumFlight-deck position served by a named sensor.
AircraftStateUSI.CoreClassProvides developer-friendly state for the currently loaded user aircraft without exposing simulator-native names or scalar encodings.
AircraftSurfaceConditionUSI.CoreEnumNormalized contamination condition of the surface beneath the aircraft.
AircraftSurfaceContactUSI.CoreClassOne active physical contact between the aircraft and a surface. Provider slot numbers are intentionally omitted from this observation model.
AircraftSurfaceTypeUSI.CoreEnumNormalized physical surface beneath the user aircraft.
AircraftSystemUSI.CoreClassAircraftSystemMeasurementsUSI.CoreStatic classPreference-aware physical measurements for the principal aircraft systems. Unit-bearing numeric operations remain available for deterministic algorithms.
AircraftSystemsDisplayUSI.CoreClassProvider-neutral aircraft systems display.
AircraftSystemsDisplayPageUSI.CoreEnumAircraft-system page selected on a multifunction systems display.
AircraftTailplaneSideUSI.CoreEnumSide of the aircraft tailplane represented by a component.
AircraftTransponderModeUSI.CoreEnumNormalized operating mode for an aircraft transponder.
AircraftVacuumSystemUSI.CoreClassProvides vacuum-system measurements in stable aviation units.
AircraftWarningSystemUSI.CoreClassProvides developer-friendly aircraft warning state without exposing simulator-native annunciator names.
AircraftWaterBallastTankDefinitionUSI.CoreClassStable identity for one configured water-ballast tank.
AircraftWaterBallastTopologyUSI.CoreClassLoaded-aircraft water-ballast tank topology.
AircraftWeightAndBalanceSystemUSI.CoreClassProvides aircraft weight and balance measurements in stable aviation units.
AircraftWindowPositionUSI.CoreEnumFlight-deck window protected by a named electric heater.
AircraftWingSideUSI.CoreEnumSide of the aircraft wing represented by a component.
AirframeStructureUSI.CoreClassOne stable structural region of the loaded aircraft. Native section counts and failure encodings are intentionally hidden.
AirshowSmokeSystemUSI.CoreClassAircraft-installed airshow-smoke equipment. Provider variables, events, and toggle commands remain below this absolute-state contract.
AirspeedUSI.CoreClassAlternateStaticAirSourceUSI.CoreClassThe aircraft's alternate static-air source for pressure-sensitive flight instruments.
AltimeterUSI.CoreClassAmbientSmokeEffectSystemUSI.CoreClassAircraft exposure to ambient smoke in the simulated world. This is separate from smoke emitted by the aircraft and from camera-local smoke density.
AngleOfAttackSensorUSI.CoreClassA named pilot, copilot, or standby angle-of-attack sensor.
AreaNavigationSystemUSI.CoreClassA named area-navigation system, including inertial or long-range navigation equipment when that is the provider's installed source.
AttitudeUSI.CoreClassAttitudeHeadingReferenceSystemUSI.CoreClassA named attitude and heading reference system.
AudioPanelUSI.CoreClassAircraft-wide audio-panel and intercom behavior. Individual receiver audio selections and volumes remain on their named radio components.
AutomaticPowerReserveSystemUSI.CoreClassAircraft-wide automatic power reserve. Installation evidence and current status are separate; discovering this logical component does not prove it is installed.
AutomaticThrustReverserSystemUSI.CoreClassAircraft-wide automatic thrust-reverser selection.
AutopilotUSI.CoreClassAutopilotChannelUSI.CoreClassOne discoverable autopilot computer/channel in the currently loaded aircraft. Public numbering is one-based; native channel identities remain below USI.
AuxiliaryFuelTransferPumpUSI.CoreClassA discoverable left- or right-side pump that transfers fuel from auxiliary tanks to feeder tanks.
AvionicsCoolingSystemUSI.CoreClassProvider-neutral avionics equipment-cooling system.
AvionicsGroupUSI.CoreClassAvionicsHardwareUnitUSI.CoreAbstract classCommon health behavior for a named integrated-avionics hardware unit.
BatteryUSI.CoreClassBleedAirDuctUSI.CoreClassA named bleed-air distribution duct on the aircraft.
BleedAirIsolationValveUSI.CoreClassA named valve that isolates part of the aircraft bleed-air ducting.
BrakeSystemUSI.CoreClassCabinEntryUSI.CoreClassA named cabin door or exit. Its logical number is stable developer-facing identity, not proof that the loaded aircraft physically installs the entry.
CabinPressurePackUSI.CoreClassA named cabin-pressure pack on the aircraft pneumatic system.
CarrierLaunchSystemUSI.CoreClassAircraft carrier-launch equipment. Exact provider capabilities remain on this single domain object even where no truthful cross-provider equivalent exists.
ChronometerUSI.CoreClassA short-duration named aircraft chronometer.
CockpitInstrumentLightUSI.CoreClassA named pilot or copilot instrument-lighting control whose selected brightness is independent from panel floodlights and achieved light output.
CockpitPanelLightUSI.CoreClassA named cockpit-panel light whose selected brightness is independent from the aircraft-wide cockpit spotlight switch and actual lighting output.
CockpitTimerUSI.CoreAbstract classShared developer-facing behavior for a named cockpit timer.
ComRadioUSI.CoreClassContrailEffectSystemUSI.CoreClassAircraft contrail-generation conditions. This does not claim that a visual effect is installed or currently visible.
DatalinkSystemUSI.CoreClassProvider-neutral aircraft communications datalink.
DmeReceiverUSI.CoreClassThe aircraft's dedicated distance-measuring-equipment receiver. This is distinct from DME observations supplied by a paired NAV receiver.
DragRudderSystemUSI.CoreClassSplit drag-rudder (yaw-brake) surfaces, kept distinct from the centerline rudder and from roll spoilers even when an aircraft coordinates them.
ElapsedTimerUSI.CoreClassA long-duration named aircraft elapsed-time counter.
ElectricFuelPumpUSI.CoreClassElectricGyroSystemUSI.CoreClassA named provider-neutral electric gyro system.
ElectricHydraulicPumpUSI.CoreClassA named electrically driven aircraft hydraulic pump.
ElectricalBusUSI.CoreClassElectricalBusTieUSI.CoreClassA controllable connection between aircraft electrical buses.
ElectricalCircuitUSI.CoreClassOne discoverable semantic electrical circuit. Provider circuit names, indexes, buses, and breaker representations remain below this object.
ElectricalInverterUSI.CoreClassA named aircraft electrical inverter.
ElectricalPowerLineUSI.CoreClassNamed electrical power-line access point; connection is not evidence of voltage or load.
ElectricalRelayUSI.CoreClassNamed electrical relay access point. Installation is Unknown without topology evidence; coil power, attached-line connection and breaker state are separate.
ElectricalVoltmeterUSI.CoreClassThe cockpit electrical voltmeter, distinct from direct battery, bus or generator measurements.
ElectronicFlightInstrumentSystemUSI.CoreClassA role-aware provider-neutral electronic flight-instrument system.
ElevatorUSI.CoreClassThe aircraft's primary and optional secondary pitch-control surfaces.
ElevonUSI.CoreClassThe aircraft's combined pitch-and-roll elevon surface system.
EmergencyGeneratorUSI.CoreClassThe aircraft's deployable emergency electrical generator, when installed.
EngineUSI.CoreClassEngineAirframeInterfaceUnitUSI.CoreClassA named engine and airframe interface unit.
EngineBleedAirSourceUSI.CoreClassEngineCoolingSystemUSI.CoreClassAircraft-wide oil and radiator cooling-flap controls, separate from each engine's cowl flap. Logical discovery does not confirm physical installation.
EngineDrivenHydraulicPumpUSI.CoreClassA named engine-driven aircraft hydraulic pump.
EngineStartingSystemUSI.CoreClassAircraft-wide engine-starting selections.
ExhaustEffectSystemUSI.CoreClassSimulator-rendered exhaust presentation for the loaded aircraft. This is distinct from engine operating state and from ambient-smoke exposure.
ExternalFuelTankSystemUSI.CoreClassJettisonable external fuel-tank equipment. Provider tank identities and release commands remain below this simulator-neutral aircraft component.
ExternalPowerSourceUSI.CoreClassFlapSystemUSI.CoreClassFlightSensorUSI.CoreAbstract classCommon identity and health behavior for a flight-deck sensor.
FlightTrimUSI.CoreClassFlyByWireSystemUSI.CoreClassThe aircraft's primary and optional secondary roll-control surfaces. Provider wing indexes and native angular units remain below this simulator-neutral component.
ForceFeedbackSystemUSI.CoreClassAuthored force-feedback behavior for the aircraft's physical controls.
FuelJunctionUSI.CoreClassA named routing junction in a component fuel network.
FuelLineUSI.CoreClassNamed fuel-line access point. Logical discovery does not establish physical installation or associate a line number with an engine, tank or pump.
FuelPumpUSI.CoreClassOne common named fuel-pump type for every supported simulator.
FuelQuantityDisplayUSI.CoreClassThe aircraft's cockpit fuel-quantity presentation. Indicated values may differ from the physical contents reported by named components because the aircraft can apply gauge and display behavior.
FuelSelectorUSI.CoreClassOne discoverable fuel selector on the loaded aircraft.
FuelTankUSI.CoreClassOne discoverable fuel tank on the loaded aircraft.
FuelTankGroupUSI.CoreClassA logical aggregation of every fuel tank on one side of an aircraft. This does not assert tank count, identity, or physical topology.
FuelTriggerUSI.CoreClassA named conditional trigger in a component fuel network.
FuelValveUSI.CoreClassOne common named fuel-valve type. Network numbering and engine association are explicit roles, never inferred from one another.
GeneratorUSI.CoreClassNamed generator access point. Its number identifies an electrical source, not an engine association; discovery does not establish installation.
GpsReceiverUSI.CoreClassNamed satellite-navigation receiver guidance. The component represents the same aviation concept whether its provider is a GPS, integrated FMS, or another area-navigation implementation.
GroundDeicingProtectionUSI.CoreClassProvider-neutral effectiveness state of applied ground deicing.
GroundPneumaticAirSourceUSI.CoreClassAn external ground source supplying pneumatic air to the aircraft.
HobbsMeterUSI.CoreClassThe loaded aircraft's Hobbs meter, distinct from simulator uptime, current-flight elapsed time, and per-engine elapsed-time counters.
HydraulicAccumulatorUSI.CoreClassA named hydraulic pressure accumulator.
HydraulicActuatorUSI.CoreClassA named hydraulic actuator.
HydraulicCircuitUSI.CoreClassA logical hydraulic-system access point. Its number identifies a provider target and does not, by itself, prove installation in the loaded aircraft.
HydraulicIndexedComponentUSI.CoreAbstract classCommon lifecycle and validation for named hydraulic components.
HydraulicPowerTransferUnitUSI.CoreClassA named hydraulic power-transfer unit.
HydraulicPumpUSI.CoreClassA named pump in a component-based hydraulic network.
HydraulicReservoirUSI.CoreClassHydraulicValveUSI.CoreClassA named valve in a component-based hydraulic network.
IAircraftUSI.CoreInterfaceIAircraftComponentUSI.CoreInterfaceIAircraftFlightAssistanceSystemUSI.CoreInterfaceSimulator-neutral access to automated pilot assistance for the loaded aircraft. Provider AI names and enum ordering remain below this contract.
IAircraftFlightPlanUSI.CoreInterfaceThe flight plan being flown by the user aircraft, independent of the simulator or installed navigator that owns the native plan.
IAircraftGroundServicesUSI.CoreInterfaceSimulator-managed services requested for the currently loaded aircraft. Successful requests confirm acceptance, not arrival or completed servicing.
IAircraftInteractionsUSI.CoreInterfaceDiscovers advanced interactions published by the currently loaded aircraft. Normal aircraft systems should be accessed through their typed USI components.
IAircraftLighterThanAirSystemUSI.CoreInterfaceSimulator-neutral state and controls for the lifting envelope of a lighter-than-air aircraft.
IAircraftWeaponsSystemUSI.CoreInterfaceProvider-neutral aircraft armament, targeting, and defensive-aids access. Native station indexes, DataRefs, and momentary commands remain below this contract.
IceDetectorUSI.CoreClassProvider-neutral aircraft ice-detection equipment.
IndexedAircraftComponentNodeUSI.CoreAbstract classInstrumentAirSourceUSI.CoreClassA named pneumatic source selected to supply air-driven instruments.
IntegratedAvionicsUnitUSI.CoreClassA named integrated avionics processing unit.
IntegratedNavigatorUSI.CoreClassA named integrated navigator containing satellite-navigation and radio- tuning functions while preserving their independent health state.
JettisonableLoadSystemUSI.CoreClassAircraft jettisonable or slung-load equipment. Multi-station payload and future sling topology remain separate named component concerns.
LandingGearUSI.CoreClassLandingGearAssemblyUSI.CoreClassOne discoverable landing-gear assembly on the loaded aircraft.
LandingGuidanceReceiverUSI.CoreClassA named landing-guidance receiver with distinct lateral and vertical channels.
LandingLightUSI.CoreClassLiquidDropSystemUSI.CoreClassAircraft equipment that carries and releases liquid, including water-bomber refill and drop controls where the provider exposes those exact semantics.
MagnetometerUSI.CoreClassA named magnetic-field sensor used by integrated avionics.
MarkerBeaconReceiverUSI.CoreClassThe aircraft's marker-beacon receiver. Provider-specific light and enum representations are normalized below this component.
MultiFunctionDisplayUSI.CoreClassA named multifunction display hardware unit.
NavRadioUSI.CoreClassNavigationBearingPointerUSI.CoreClassOne named bearing pointer on a role-aware electronic flight display.
NavigationCommunicationUnitUSI.CoreClassA named integrated navigation/communication equipment unit. This is distinct from the independently usable NAV and COM receiver objects.
OnboardCameraSystemUSI.CoreClassProvider-neutral aircraft-installed camera equipment.
PayloadStationUSI.CoreClassOne discoverable payload station on the loaded aircraft.
PistonCylinderUSI.CoreClassA named piston-cylinder access point. Installation is explicit, not inferred from readable temperature.
PistonCylinderCollectionUSI.CoreClassA graph snapshot of named cylinder access points, with installed count when known.
PitotProbeUSI.CoreClassPneumaticAreaUSI.CoreClassA named temperature-controlled area of the aircraft.
PneumaticFanUSI.CoreClassA named fan in the aircraft pneumatic network.
PneumaticIndexedComponentUSI.CoreAbstract classCommon lifecycle and validation for indexed pneumatic components.
PneumaticJunctionUSI.CoreClassA named junction in the aircraft pneumatic distribution network.
PneumaticLineUSI.CoreClassA named line in the aircraft pneumatic distribution network.
PneumaticValveUSI.CoreClassA named valve in the aircraft pneumatic network.
PrimaryFlightControlsUSI.CoreClassPrimaryFlightDisplayUSI.CoreClassA named primary flight display hardware unit.
PropellerIceProtectionUSI.CoreClassRadioAltimeterUSI.CoreClassA named radio-altimeter receiver.
RadioMagneticIndicatorUSI.CoreClassA role-aware radio-magnetic indicator. Native selector values and provider-specific pointer switches remain below this component.
ReactionControlSystemUSI.CoreClassAircraft-wide maneuvering reaction-control propulsion.
RecoveryParachuteSystemUSI.CoreClassAircraft-wide emergency recovery parachute equipment.
RefuelingPortUSI.CoreClassThe loaded aircraft's logical ground-refueling connection point. Availability does not imply that simulator refueling service is active.
RocketAssistedTakeoffSystemUSI.CoreClassAircraft-wide rocket-assisted takeoff equipment. The same named component is present for every simulator; unsupported providers return typed results.
RotorUSI.CoreClassA named rotor access point, independent of engine numbering. Installation may be Unknown; readable telemetry is not evidence of physically installed equipment.
RotorBrakeSystemUSI.CoreClassAircraft-wide rotor-brake selection and configured strength.
RotorDrivenHydraulicPumpUSI.CoreClassA named rotor-driven aircraft hydraulic pump.
RotorPreRotationSystemUSI.CoreClassAircraft-wide rotor pre-rotation equipment.
RotorcraftClutchUSI.CoreClassProvider-neutral helicopter or gyrocopter rotor-drive clutch.
RotorcraftSystemUSI.CoreClassAircraft-wide rotorcraft facts, separate from individual engine and rotor indexing.
RudderUSI.CoreClassThe aircraft's primary and optional secondary directional-control surfaces.
SatelliteBasedAugmentationReceiverUSI.CoreClassA named satellite-based augmentation receiver.
SensorHeaterUSI.CoreClassA named heater protecting one aircraft flight sensor.
SpeedBrakeSystemUSI.CoreClassSpoilerSystemUSI.CoreClassProvides simulator-neutral access to roll spoilers (spoilerons), kept distinct from the speed-brake surfaces that may share physical panels.
StaticPressureSensorUSI.CoreClassA named pilot, copilot, or standby static-pressure sensor.
TailRotorTransmissionUSI.CoreClassProvider-neutral tail-rotor transmission equipment.
TailhookUSI.CoreClassTailplaneIceProtectionUSI.CoreClassProvider-neutral ice-protection equipment for one tailplane.
TailwheelUSI.CoreClassThrustVectoringSystemUSI.CoreClassAircraft-wide thrust-vectoring selection and achieved position.
TksFluidPumpUSI.CoreClassA named TKS fluid pump. Numbering preserves the authoritative aircraft channels without inventing primary or backup roles.
TksIceProtectionSystemUSI.CoreClassProvider-neutral aircraft-wide TKS fluid supply and pump state.
TowingSystemUSI.CoreClassAircraft towing and winch equipment. Provider-specific observations remain available on this single simulator-neutral component without changing its identity or requiring provider branches.
TransponderUSI.CoreClassTurnIndicatorUSI.CoreClassVacuumCircuitUSI.CoreClassA named source of aircraft instrument-vacuum pressure.
VariableGeometryNoseSystemUSI.CoreClassAn aircraft's movable nose and protective visor system.
VertSpeedIndUSI.CoreClassWaterBallastSystemUSI.CoreClassAircraft water-ballast equipment. Releasable water carried by a water- bomber remains a separate control system.
WaterBallastTankUSI.CoreClassOne named water-ballast tank on the loaded aircraft.
WaterRudderUSI.CoreClassWeatherRadarUSI.CoreClassProvider-neutral onboard weather-radar equipment.
WeatherRadarPresentationUSI.CoreClassWeather-radar presentation controls and indications for one electronic flight display.
WindIndicatorUSI.CoreClassA named pilot or copilot cockpit wind indication. This remains distinct from the simulator environment's actual local wind observation.
WindowHeaterUSI.CoreClassA named heater protecting one flight-deck window.
WindshieldRainRepellentUSI.CoreClassA named non-wiper rain-repellent system serving one flight-deck windshield.
WindshieldWiperUSI.CoreClassA named wiper serving one flight-deck windshield.
WingCondensationEffectSystemUSI.CoreClassAircraft-wide summaries of actual aerodynamic condensation around the loaded aircraft's wings. Native aerodynamic-wing slots remain internal.
WingGeometrySystemUSI.CoreClassFixed wing planform and variable airframe geometry. Requested and achieved variable-geometry positions remain distinct.
WingIceProtectionUSI.CoreClassProvider-neutral ice-protection equipment for one wing.
YawStringIndicatorUSI.CoreClassA physical yaw-string indication, distinct from aerodynamic sideslip and an instrument's slip/skid ball.
