Aircraft System Variables

The tables below indicate the properties for the Simulation Variables that can be used to get and set properties related to the various aircraft controls and systems. For information on the units listed for each variable, please see here: Simulation Variable Units

NOTE

When Microsoft Flight Simulator 2024 is running in multiplayer mode, only a small number of variables are communicated between aircraft. Those variables that are available will say so in the description as being either for “All Aircraft” or for “Shared Cockpit”.

You can find a complete index of all available SimVars here: SimVar Index

General

Simulation Variable	Index	Description	Units
`AIRSPEED TRUE CALIBRATE`	N/A	Angle of True calibration scale on airspeed indicator.	Degrees
`ALTERNATE STATIC SOURCE OPEN`	N/A	Alternate static air source.	Bool
`ANEMOMETER PCT RPM`	N/A	Anemometer rpm as a percentage.	Percent Over 100
`ANGLE OF ATTACK INDICATOR`	N/A	AoA indication.	Radians
`ANNUNCIATOR SWITCH`	N/A	Currently not used in the simulation.	Bool
`APPLY HEAT TO SYSTEMS`	N/A	Used when too close to a fire.	Bool
`ATTITUDE BARS POSITION`	N/A	Reference pitch bar position of the attitude director indicator	Percent Over 100
`ATTITUDE CAGE`	N/A	Attitude director indicator caged state	Bool
`ATTITUDE INDICATOR BANK DEGREES`	N/A	Attitude director indicator bank indication	Radians
`ATTITUDE INDICATOR PITCH DEGREES`	N/A	Attitude director indicator pitch indication	Radians
`AUDIO PANEL AVAILABLE`	N/A	True if the audio panel is available.	Bool
`AUDIO PANEL VOLUME`	N/A	The Volume of the Audio Panel.	Percent
`AUTOTHROTTLE ACTIVE`	N/A	Auto-throttle active.	Bool
`AUTO COORDINATION`	N/A	Is auto-coordination active.	Bool
`AVIONICS MASTER SWITCH`	N/A	The avionics master switch position, `true` if the switch is ON. Use an avionics circuit index when referencing.	Bool
`CABIN NO SMOKING ALERT SWITCH`	N/A	True if the No Smoking switch is on.	Bool
`CABIN SEATBELTS ALERT SWITCH`	N/A	True if the Seatbelts switch is on.	Bool
`CANOPY OPEN`	N/A	Percent primary door/exit open.	Percent Over 100
`CARB HEAT AVAILABLE`	N/A	True if carburetor heat available.	Bool
`DELTA HEADING RATE`	N/A	Rate of turn of heading indicator.	Radians per second
`DME SOUND`	N/A	DME audio flag.	Bool
`ELT ACTIVATED`	N/A	Whether or not the Emergency Locator Transmitter is active.	Bool
`EXTERNAL SYSTEM VALUE`	N/A	Generic SimVar.	Number
`FIRE BOTTLE DISCHARGED`	N/A	True if the fire bottle is discharged.	Bool
`FIRE BOTTLE SWITCH`	N/A	True if the fire bottle switch is on.	Bool
`GLASSCOCKPIT AUTOMATIC BRIGHTNESS`	N/A	This variable will return a value between 0 and 1 for the automatic brightness setting for glass cockpit displays, where 0 is the dimmest and 1 is the brightest. This value will vary depending on the time of day.	Number
`GPWS SYSTEM ACTIVE`	N/A	True if the Ground Proximity Warning System is active.	Bool
`GPWS WARNING`	N/A	True if Ground Proximity Warning System installed.	Bool
`GYRO DRIFT ERROR`	N/A	Angular error of heading indicator.	Radians
`HAS STALL PROTECTION`	N/A	Will return whether the aircraft has stall protection (true) or not (false).	Bool
`HEADING INDICATOR`	N/A	Heading indicator (directional gyro) indication.	Radians
`INDICATED ALTITUDE`	N/A	The indicated altitude.	Feet
`INDICATED ALTITUDE CALIBRATED`	N/A	Indicated altitude with the altimeter calibrated to current sea level pressure.	Feet
`INDICATED ALTITUDE EX1`	N/A	Similar to `INDICATED ALTITUDE` but doesn’t affect actual plane position when setting this variable.	Feet
`INDUCTOR COMPASS HEADING REF`	N/A	Inductor compass heading.	Radians
`INDUCTOR COMPASS PERCENT DEVIATION`	N/A	Inductor compass deviation reading.	Percent Over 100
`INSTRUMENTS AVAILABLE`	N/A	Deprecated, do not use!	Mask
`INTERCOM MODE`	N/A	Intercom Mode	Enum:0 = ISO1 = ALL2 = CREW
`INTERCOM SYSTEM ACTIVE`	N/A	Whether or not the intercom system is active.	Bool
`IS ALTITUDE FREEZE ON`	N/A	True if the altitude of the aircraft is frozen.	Bool
`IS ATTITUDE FREEZE ON`	N/A	True if the attitude (pitch, bank and heading) of the aircraft is frozen.	Bool
`IS LATITUDE LONGITUDE FREEZE ON`	N/A	True if the lat/lon of the aircraft (either user or AI controlled) is frozen. If this variable returns true, it means that the latitude and longitude of the aircraft are not being controlled by the simulation, so enabling, for example, a SimConnect client to control the position of the aircraft. This can also apply to altitude and attitude.Also refer to the range of `FREEZE_*` Event IDs.	Bool
`KOHLSMAN SETTING HG`	Altimeter Index	The value for the given altimeter index in inches of mercury either tuned using the barometer knob (`KOHLSMAN SETTING STD` is false) or as the “standard” sea level pressure value (`KOHLSMAN SETTING STD` is true).IMPORTANT! In the system.cfg file, altimeters are indexed from 0, but the SimVar indexes from 1. So, altimeter 0 in that file is accessed using `KOHLSMAN SETTING MB:1`, 1 by `KOHLSMAN SETTING MB:2`, etc…	Inches of Mercury, inHg
`KOHLSMAN SETTING HG EX1`	Altimeter Index	The barometer tuned value for the given altimeter index in inches of mercury regardless of whether `KOHLSMAN SETTING STD` is true or false.IMPORTANT! In the system.cfg file, altimeters are indexed from 0, but the SimVar indexes from 1. So, altimeter 0 in that file is accessed using `KOHLSMAN SETTING MB:1`, 1 by `KOHLSMAN SETTING MB:2`, etc…	Inches of Mercury, inHg
`KOHLSMAN SETTING MB`	Altimeter Index	The value for the given altimeter index in millibars either tuned using the barometer knob (`KOHLSMAN SETTING STD` is false) or as the “standard” sea level pressure value (`KOHLSMAN SETTING STD` is true).IMPORTANT! In the system.cfg file, altimeters are indexed from 0, but the SimVar indexes from 1. So, altimeter 0 in that file is accessed using `KOHLSMAN SETTING MB:1`, 1 by `KOHLSMAN SETTING MB:2`, etc…	Millibars
`KOHLSMAN SETTING MB EX1`	Altimeter Index	The barometer tuned value for the given altimeter index in millibars regardless of whether `KOHLSMAN SETTING STD` is true or false.IMPORTANT! In the system.cfg file, altimeters are indexed from 0, but the SimVar indexes from 1. So, altimeter 0 in that file is accessed using `KOHLSMAN SETTING MB:1`, 1 by `KOHLSMAN SETTING MB:2`, etc…	Millibars
`KOHLSMAN SETTING STD`	Altimeter Index	True if the indexed altimeter is in “Standard” sea level pressure mode, or false otherwise.IMPORTANT! In the system.cfg file, altimeters are indexed from 0, but the SimVar indexes from 1. So, altimeter 0 in that file is accessed using `KOHLSMAN SETTING STD:1`, 1 by `KOHLSMAN SETTING STD:2`, etc…	Bool
`MAGNETIC COMPASS`	N/A	Compass reading.	Degrees
`MANUAL FUEL PUMP HANDLE`	N/A	Position of manual fuel pump handle. 1 is fully deployed.	Percent Over 100
`OVERSPEED WARNING`	N/A	Overspeed warning state.	Bool
`PANEL ANTI ICE SWITCH`	N/A	True if panel anti-ice switch is on.	Bool
`PITOT ICE PCT`	N/A	Amount of pitot ice. 100 is fully iced.	Percent Over 100
`PITOT HEAT`	N/A	Pitot heat active.	Bool
`PITOT HEAT SWITCH`	Index	Indexed pitot heat switch state.	Enum:0 = Off1 = On2 = Auto
`PLANE HEADING DEGREES GYRO`	N/A	Heading indicator (directional gyro) indication.	Radians
`RAD INS SWITCH`	N/A	True if Rad INS switch on.	Bool
`SELECTED DME`	N/A	Selected DME.	Number
`SMOKESYSTEM AVAILABLE`	N/A	Smoke system available.NOTE: There is no default “smoke system” that this SimVar works on and this is a legacy variable that is available for use should you wish to use it but it affects nothing by default.	Bool
`SMOKE ENABLE`	N/A	Set to True to activate the smoke system, if one is available. Please see the notes for `SMOKESYSTEM AVAILABLE` for more information.	Bool
`SPEAKER ACTIVE`	N/A	Whether or not the speaker is active.	Bool
`STALL HORN AVAILABLE`	N/A	True if stall alarm available.	Bool
`STALL PROTECTION OFF LIMIT`	N/A	Alpha below which the Stall Protection can be disabled. See the `[STALL PROTECTION]` section for more information.	Radians
`STALL PROTECTION ON GOAL`	N/A	The alpha that the Stall Protection will attempt to reach when triggered. See the `[STALL PROTECTION]` section for more information.	Radians
`STALL PROTECTION ON LIMIT`	N/A	Alpha above which the Stall Protection timer starts. See the `[STALL PROTECTION]` section for more information.	Radians
`STALL PROTECTION SYSTEM YOKE SHAKER INTENSITY`	N/A	Used to detect the current stall protection system shaker state.	Percent Over 100
`STALL WARNING`	N/A	Stall warning state.	Bool
`STRUCTURAL DEICE SWITCH`	N/A	True if the aircraft structure deice switch is on.	Bool
`SUCTION PRESSURE`	N/A	Vacuum system suction pressure.	Inches of Mercury, inHg
`SYSTEMS AVAILABLE`	N/A	Deprecated, do not use!	Mask
`TRUE AIRSPEED SELECTED`	N/A	True if True Airspeed has been selected.	Bool
`TURN COORDINATOR BALL`	N/A	Turn coordinator ball position.	Position 128(-127 to 127)
`TURN COORDINATOR BALL INV`	N/A	Turn coordinator ball position inverted (upside down).	Position 128(-127 to 127)
`TURN INDICATOR RATE`	N/A	Turn indicator reading.NOTE: This is available in multiplayer to all near aircraft. See here for more information: Note On SimVars In Multiplayer.	Radians per second
`TURN INDICATOR SWITCH`	N/A	True if turn indicator switch is on.	Bool
`WINDSHIELD DEICE SWITCH`	N/A	True if the aircraft windshield deice switch is on.	Bool
`WISKEY COMPASS INDICATION DEGREES`	N/A	Deprecated, do not use!Use `MAGNETIC COMPASS` instead.	Degrees

Variometer

Simulation Variable	Index	Description	Units
`VARIOMETER MAC CREADY SETTING`	N/A	The MacCready setting used to fly an optimal speed between thermals.	Meters per second
`VARIOMETER NETTO`	N/A	Variometer rate using Netto (Total Energy - polar sinkRate).	Feet per second
`VARIOMETER RATE`	N/A	The variometer rate.	Feet per second
`VARIOMETER SPEED TO FLY`	N/A	Optimal speed to fly between thermals using polar curve and MacCready setting.	Kilometers per hour
`VARIOMETER SPEED TO FLY GLIDE RATIO`	N/A	The glide ratio at optimal speed to fly.	Number
`VARIOMETER SWITCH`	N/A	True if the variometer switch is on, false if it is not.	Bool
`VARIOMETER TOTAL ENERGY`	N/A	The variometer rate using total energy.`Total Energy = Potential Energy + Kinetic Energy`	Feet per second

Water Ballast

Simulation Variable	Index	Description	Units
`WATER BALLAST TANK CAPACITY`	Tank Name (or Index)	The capacity of the indexed water ballast tank.	Pounds
`WATER BALLAST TANK NUMBER`	N/A	The number of water ballast tank available.	Number
`WATER BALLAST TANK QUANTITY`	Tank Name (or Index)	The quantity of water ballast in the named tank.	Pounds
`WATER BALLAST VALVE`	N/A	True (1) if a water ballast valve is available, False (0) otherwise.	Bool
`WATER BALLAST VALVE FLOW RATE`	N/A	The flow rate of the water ballast valve.	Gallons per hour
`WATER BALLAST EVERY VALVE OPEN`	N/A	This variable will return 1 (TRUE) if all the ballast tank valves are open, or 0 (FALSE) otherwise.	Bool

Liquid Dropping System

These SimVars are all related to the Modular Liquid Dropping System. Most of them require the name of the component that they target. This name is given using the following format:

[SimVar]:'[COMPONENT_NAME]'_n

For example:

(A:LIQUID DROPPING SCOOP FLOW:'Scoop_1'_n, Enum)

Simulation Variable	Index	Description	Units
`LIQUID DROPPING DOOR FLOW`	Door Name (or index)	The rate at which liquid is released through the named Door, as a weight	lbs per hour
`LIQUID DROPPING DOOR FLOW VOLUME`	Door Name (or index)	The rate at which liquid is released through the named Door, as a volume	Gallons per hour
`LIQUID DROPPING DOOR OPEN TARGET`	Door Name (or index)	This is the target amount that the named Door should be opened to, where 0 is fully closed and 1 is fully open.NOTE: This is available in multiplayer to all near aircraft, but only the first named Door (`Door.1`). See here for more information: Note On SimVars In Multiplayer.	Percent Over 100
`LIQUID DROPPING DOOR OPEN VALUE`	Door Name (or index)	The amount that the named Door is currently open, where 0 is fully closed, and 1 is fully open.	Percent Over 100
`LIQUID DROPPING SCOOP FLOW`	Scoop Name (or index)	The rate at which water is scooped by the named Scoop, as a weight.	lbs per hour
`LIQUID DROPPING SCOOP FLOW VOLUME`	Scoop Name (or index)	The rate at which water is scooped by the named Scoop, as a volume.	Gallons per hour
`LIQUID DROPPING SCOOP OPEN TARGET`	Scoop Name (or index)	This is the target amount that the named Scoop should be opened to, where 0 is fully closed and 1 is fully open.NOTE: This is available in multiplayer to all near aircraft, but only the first named Scoop (`Scoop.1`). See here for more information: Note On SimVars In Multiplayer.	Percent Over 100
`LIQUID DROPPING SCOOP OPEN VALUE`	Scoop Name (or index)	The amount that the named Scoop is currently open, where 0 is fully closed, and 1 is fully open.	Percent Over 100
`LIQUID DROPPING TANK CAPACITY`	Tank Name (or index)	The maximum weight capacity of liquid that can be stored in the named Tank, expressed as a weight.	lbs
`LIQUID DROPPING TANK CAPACITY VOLUME`	Tank Name (or index)	The maximum capacity of liquid that can be stored in the named Tank, expressed as a volume.	Gallon
`LIQUID DROPPING TANK PCT FULL VOLUME`	Tank Name (or index)	The percentage of the total volume capacity of the named Tank currently filled, expressed as a Percent Over 100.	Gallon
`LIQUID DROPPING TANK PCT FULL WEIGHT`	Tank Name (or index)	The perecentage of the total weight capacity of the named Tank currently filled, expressed as a Percent Over 100.	Gallon
`LIQUID DROPPING TANK TOTAL CAPACITY`	N/A	The total capacity of liquid that can be stored in all the Tanks combined.	lbs
`LIQUID DROPPING TANK TOTAL CAPACITY VOLUME`	N/A	The total capacity of liquid that can be stored in all the Tanks combined.	Gallon
`LIQUID DROPPING TANK TOTAL WEIGHT`	N/A	The total weight of the liquid stored in all the Tanks combined.	lbs
`LIQUID DROPPING TANK TOTAL CURRENT VOLUME`	N/A	The total volume of the liquid stored in all the Tanks combined.	Gallon
`LIQUID DROPPING TANK WEIGHT`	Tank Name (or index)	The current weight of liquid stored in the named Tank.	lbs
`LIQUID DROPPING TANK CURRENT VOLUME`	Tank Name (or index)	The current volume of liquid stored in the named Tank.	Gallon
`LIQUID DROPPING TOTAL DROPPED FLOW`	N/A	The rate at which liquid is being released through the whole liquid dropping system.	lbs per hour
`LIQUID DROPPING TOTAL DROPPED FLOW VOLUME`	N/A	The rate at which liquid is being released through the whole liquid dropping system.	Gallons per hour
`LIQUID DROPPING TOTAL SCOOPED FLOW`	N/A	The rate at which liquid is being scooped by the whole liquid dropping system.	lbs per hour
`LIQUID DROPPING TOTAL SCOOPED FLOW VOLUME`	N/A	The rate at which liquid is being scooped by the whole liquid dropping system.	Gallons per hour

Lights

Simulation Variable	Index	Description	Units
`HAS ANY CABIN SIGNAL LIGHT`	N/A	Indicates whether or not the plane is equipped with signal lights (i.e. for skydiving, airdrop, …)	Bool
`IS ANY INTERIOR LIGHT ON`	N/A	Will return true if any interior light is on or false otherwise.	Bool
`LANDING LIGHT PBH`	N/A	Landing light pitch bank and heading.	Struct `PBH`
`LIGHT AMBIENT COLOR START RGBA`	Ambient light index	This can be used to set the start colour of an ambient light. When providing a colour value, this can be done using either a hexadecimal value or a decimal value, for example: 0xFF994422 or 4288234530. For hexadecimal, it should be formatted as: 0xAABBGGRR.	Integer / Hexadecimal
`LIGHT AMBIENT COLOR START R`	Ambient light index	This can be used to set the starting red component of an ambient light colour. When providing a colour value, this can be done using either a hexadecimal value or a decimal value, for example: 0x22 or 34. For hexadecimal, it should be formatted as: 0xRR.	Integer / Hexadecimal
`LIGHT AMBIENT COLOR START G`	Ambient light index	This can be used to set the starting green component of an ambient light colour. When providing a colour value, this can be done using either a hexadecimal value or a decimal value, for example: 0x44 or 68. For hexadecimal, it should be formatted as: 0xGG.	Integer / Hexadecimal
`LIGHT AMBIENT COLOR START B`	Ambient light index	This can be used to set the starting blue component of an ambient light colour. When providing a colour value, this can be done using either a hexadecimal value or a decimal value, for example: 0x99 or 153. For hexadecimal, it should be formatted as: 0xBB.	Integer / Hexadecimal
`LIGHT AMBIENT COLOR START A`	Ambient light index	This can be used to set the starting alpha component of an ambient light. When providing an alpha value, this can be done using either a hexadecimal value or a decimal value, for example: 0xff or 255. For hexadecimal, it should be formatted as: 0xAA.	Integer / Hexadecimal
`LIGHT AMBIENT COLOR END RGBA`	Ambient light index	This can be used to set the end colour of an ambient light. When providing a colour value, this can be done using either a hexadecimal value or a decimal value, for example: 0xFF994422 or 4288234530. For hexadecimal, it should be formatted as: 0xAABBGGRR.	Integer / Hexadecimal
`LIGHT AMBIENT COLOR END R`	Ambient light index	This can be used to set the ending red component of an ambient light colour. When providing a colour value, this can be done using either a hexadecimal value or a decimal value, for example: 0x22 or 34. For hexadecimal, it should be formatted as: 0xRR.	Integer / Hexadecimal
`LIGHT AMBIENT COLOR END G`	Ambient light index	This can be used to set the ending green component of an ambient light colour. When providing a colour value, this can be done using either a hexadecimal value or a decimal value, for example: 0x44 or 68. For hexadecimal, it should be formatted as: 0xGG.	Integer / Hexadecimal
`LIGHT AMBIENT COLOR END B`	Ambient light index	This can be used to set the ending blue component of an ambient light colour. When providing a colour value, this can be done using either a hexadecimal value or a decimal value, for example: 0x99 or 153. For hexadecimal, it should be formatted as: 0xBB.	Integer / Hexadecimal
`LIGHT AMBIENT COLOR END A`	Ambient light index	This can be used to set the ending alpha component of an ambient light. When providing an alpha value, this can be done using either a hexadecimal value or a decimal value, for example: 0xff or 255. For hexadecimal, it should be formatted as: 0xAA.	Integer / Hexadecimal
`LIGHT BEACON`	N/A	Light switch state.NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer.	Bool
`LIGHT BEACON ON`	N/A	Returns `true` if the target beacon light is functioning or if the switch is ON. Use beacon `lightdef.N` index.	Bool
`LIGHT BACKLIGHT INTENSITY`	N/A	Vehicle backlights current intensity (0 = off, 1 = full intensity).	Percent Over 100
`LIGHT BRAKE ON`	N/A	Returns `true` if the target brake light is functioning or if the switch is ON.	Bool
`LIGHT CABIN`	N/A	Light switch state.	Bool
`LIGHT CABIN ON`	N/A	Returns `true` if the target cabin light is functioning or if the switch is ON. Use the cabin `lightdef.N` index.	Bool
`LIGHT CABIN POWER SETTING`	N/A	The current cabin light power setting. Requires the cabin `lightdef.N` index.	Percent
`LIGHT GLARESHIELD`	N/A	Whether or not the Light switch for the Glareshield is enabled.	Bool
`LIGHT GLARESHIELD ON`	N/A	Returns `true` if the target glareshield light is functioning or if the switch is ON. Use the glareshield `lightdef.N` index.	Bool
`LIGHT GLARESHIELD POWER SETTING`	N/A	The current glareshield light power setting. Requires the glareshield `lightdef.N` index.	Percent
`LIGHT GYROLIGHT INTENSITY`	N/A	Vehicle gyrolights current intensity (0 = off, 1 = full intensity).	Percent Over 100
`LIGHT HEAD ON`	N/A	Returns `true` if the target navigation light is functioning or if the switch is ON.	Bool
`LIGHT HEADLIGHT INTENSITY`	N/A	Vehicle headlights current intensity (0 = off, 1 = full intensity).	Percent Over 100
`LIGHT LANDING ON`	N/A	Returns `true` if the target landing light is functioning or if the switch is ON. Use landing `lightdef.N` index.	Bool
`LIGHT LANDING`	N/A	Light switch state for landing light.NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer.	Bool
`LIGHT LOGO`	N/A	Light switch state for logo light.NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer.	Bool
`LIGHT LOGO ON`	N/A	Returns `true` if the target logo light is functioning or if the switch is ON. Use the logo `lightdef.N` index.	Bool
`LIGHT NAV ON`	N/A	Returns `true` if the target navigation light is functioning or if the switch is ON. Use navigation `lightdef.N` index.	Bool
`LIGHT NAV`	N/A	Light switch state for the NAV light.	Bool
`LIGHT ON STATES`	N/A	Bit mask:[index]0x0001:[index] Nav0x0002:[index] Beacon0x0004:[index] Landing0x0008:[index] Taxi0x0010:[index] Strobe0x0020:[index] Panel0x0040:[index] Recognition0x0080:[index] Wing0x0100:[index] Logo0x0200:[index] Cabin	Mask
`LIGHT PANEL`	N/A	Light switch state of the panel light.	Bool
`LIGHT PANEL ON`	N/A	Returns `true` if the target panel light is functioning or if the switch is ON. Use the panel `lightdef.N` index.	Bool
`LIGHT PANEL POWER SETTING`	N/A	The current panel light power setting. Requires the panel `lightdef.N` index.	Percent
`LIGHT PEDESTRAL`	N/A	Whether or not the Light switch for the Pedestal is enabled.NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer.	Bool
`LIGHT PEDESTRAL ON`	N/A	Returns `true` if the target pedestral light is functioning or if the switch is ON. Requires the pedestral `lightdef.N` index.	Bool
`LIGHT PEDESTRAL POWER SETTING`	N/A	The current pedestral light power setting. Requires the pedestral `lightdef.N` index.	Percent
`LIGHT POTENTIOMETER`	Potentiometer Index	Adjust the potentiometer of the indexed lighting. The light name (and index) is defined in the appropriate `lightdef.N` hashmap setting.	Percent Over 100
`LIGHT RECOGNITION`	N/A	Light switch state for the recognition light.NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer.	Bool
`LIGHT RECOGNITION ON`	N/A	Returns `true` if the target recognition light is functioning or if the switch is ON. Use the recognition `lightdef.N` index.	Bool
`LIGHT STATES`	N/A	Same as `LIGHT_ON_STATES`.NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer.	Mask
`LIGHT STROBE`	N/A	Light switch state for the strobe lights.NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer.	Bool
`LIGHT STROBE ON`	N/A	Returns `true` if the target strobe light is functioning or if the switch is ON. Use the strobe `lightdef.N` index.NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer.	Bool
`LIGHT TAXI`	N/A	Light switch state for the taxi light.NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer.	Bool
`LIGHT TAXI ON`	N/A	Returns `true` if the target taxi light is functioning or if the switch is ON. Use taxi `lightdef.N` index.	Bool
`LIGHT WING`	N/A	Light switch state for the wing lights.NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer.	Bool
`LIGHT WING ON`	N/A	Returns `true` if the target wing light is functioning or if the switch is ON. Use the wing `lightdef.N` index.	Bool
`MANUAL INSTRUMENT LIGHTS`	N/A	True if instrument lights are set manually.	Bool
`STROBES AVAILABLE`	N/A	True if strobe lights are available.	Bool
`STROBE FLASH`	N/A	Deprecated, do not use!	Bool

Hydraulics

These SimVars are all related to the Modular Hydraulics System. Most of them require the name of the component that they target. This name is given using the following format:

[SimVar]:'[COMPONENT_NAME]'_n

For example:

(A:HYDRAULIC ACTUATOR PCT INTEGRITY:'LandingGear'_n, Enum)

Simulation Variable	Index	Description	Units	Settable
`HYDRAULIC ACCUMULATOR PRESSURE`	Accumulator Name (or index)	The pressure of the named hydraulic Accumulator.N.	psi
`HYDRAULIC ACCUMULATOR QUANTITY`	Accumulator Name (or index)	The quantity of fluid in the named hydraulic Accumulator.N.	Litres
`HYDRAULIC ACTUATOR ACTIVE`	Actuator Name (or index)	Whether the named hydraulic Actuator.N is active (1, TRUE) or not (0, FALSE). Thsi SimVar is read only except for “Custom” actuators. For more information please see here: Custom Actuators	Boolean	Only For actuators of the type “Custom”
`HYDRAULIC ACTUATOR PCT INTEGRITY`	Actuator Name (or index)	The current integrity of the named hydraulic Actuator.N, where 0 means it is broken, and 1 means it is in perfect condition.	Percent Over 100
`HYDRAULIC ACTUATOR PRESSURE`	Actuator Name (or index)	The current pressure of the named hydraulic Actuator.N.	psi
`HYDRAULIC PTU ACTIVE`	PTU Name (or Index)	Whether the named named PTU.N is active (1, TRUE) or not (0, FALSE).	Boolean
`HYDRAULIC PTU DIRECTION`	PTU Name (or Index)	The flow direction of the named hydraulic PTU.N, where 1 (TRUE) means the flow is from the motor to the pump, or 0 (FALSE) means the flow is from the pump to the motor (only possible if the PTU is reversible).	Boolean
`HYDRAULIC PTU PRESSURE`	PTU Name (or Index)	The current pressure of the named hydraulic PTU.N.	psi
`HYDRAULIC PUMP ACTIVE`	Pump Name (or Index)	Whether the named hydraulic Pump.N is active (1, TRUE) or not (0, FALSE). Note that this does nothing if used with the legacy hydraulics system.	Boolean
`HYDRAULIC PUMP PRESSURE`	Pump Name (or Index)	The current output pressure of the named hydraulic Pump.N.	psi
`HYDRAULIC RESERVOIR PERCENT`	Reservoir Name (or Index)	The quantity of hydraulic fluid in the named Reservoir.N where 0 is none and 1 is full. Hydraulic pressure changes across the system will follow changes to this variable.	Percent Over 100
`HYDRAULIC RESERVOIR PRESSURE`	Reservoir Name (or Index)	The current hydraulic fluid pressure in the named Reservoir.N.	psi
`HYDRAULIC RESERVOIR QUANTITY`	Reservoir Name (or Index)	The quantity of hydraulic fluid in the named Reservoir.N. Hydraulic pressure changes across the system will follow changes to this variable.	Litres
`HYDRAULIC SWITCH`	Pump Index	This will be 1 (TRUE) if the indexed Pump.N switch is on, or 0 (FALSE) otherwise. Note that this can be used with the legacy hydraulics system, as well as the modern hydraulics system (where it works the same as the `HYDRAULIC PUMP ACTIVE`, which should be used instead).	Boolean
`HYDRAULIC SYSTEM INTEGRITY`	Component Name	The current integrity of the named Hydraulic System component, where 0 means it is broken, and 1 means it is in perfect condition.NOTE: You can only use the component name with this SimVar, not the index.	Percent Over 100
`HYDRAULIC VALVE ACTIVE`	Valve Name	Whether the named hydraulic Valve.N is active (1, TRUE) or not (0, FALSE).	Boolean
`HYDRAULIC VALVE POS`	Valve Name	The amount that the named Valve is currently open, expressed as a Percent Over 100.	Percent Over 100
`HYDRAULIC VALVE TARGET POS`	Valve Name (or index)	The target amount that the named Valve should open to, expressed as a Percent Over 100.	Percent Over 100
`HYDRAULIC PRESSURE(:name)`	N/A if legacyPump Name (or index) for modern system	The current pressure of the legacy [HYDRAULIC_SYSTEM] as a whole. Note that this will still work for the current modular hydraulics system, but will require a name as it simply replicates the `HYDRAULIC PUMP PRESSURE` SimVar.	psf

Pneumatics

These SimVars are all related to the Modular Pneumatics System. Most of them require the name of the component that they target. This name is given using the following format:

[SimVar]:'[COMPONENT_NAME]'_n

For example:

(A:PNEUMATICS AREA TARGET TEMPERATURE PCT:'Cabin_Area'_n, Enum)

Simulation Variable	Index	Description	Units
`PNEUMATICS AIRCRAFT PRESSURE`	N/A	Returns the current pressure in the aircraft.	Kilopascal
`PNEUMATICS APU BLEED AIR`	N/A	Whether or not the APU bleed air is active.	Boolean
`PNEUMATICS AREAS MAX TEMPERATURE`	N/A	The maximum temperature in all the controlled Areas of the aircraft.	Celsius
`PNEUMATICS AREAS MIN TEMPERATURE`	N/A	The minimum temperature in all the controlled Areas of the aircraft.	Celsius
`PNEUMATICS AREA TARGET TEMPERATURE`	Area Name (or index)	The current target temperature of the named Area.	Celsius
`PNEUMATICS AREA TARGET TEMPERATURE PCT`	Area Name (or index)	The current target temperature of the named Area expressed as a Percent Over 100 between the minimum and maximum temperature.	Percent Over 100
`PNEUMATICS AREA TEMPERATURE`	Area Name (or index)	The temperature of the named Area.	Celsius
`PNEUMATICS CABIN ALTITUDE`	N/A	The current pressure altitude of the aircraft cabin.	ft
`PNEUMATICS CABIN ALTITUDE RATE`	N/A	The rate at which the cabin pressure altitude changes.	ft per second
`PNEUMATICS COMPONENT TEMPERATURE`	Component Name	This can be used to retrieve the current temperature of the named pnuematic component.NOTE: You can only use the component name with this SimVar, not the index.	Celsius
`PNEUMATICS COMPONENT NUMBER OF MOLES`	Component Name	This can be used to retrieve the current quantity of matter - in moles - in the named pneumatic component.NOTE: You can only use the component name with this SimVar, not the index.	Number
`PNEUMATICS COMPONENT PRESSURE`	Component Name	This can be used to retrieve the current air pressure of the named pneumatic component.NOTE: You can only use the component name with this SimVar, not the index.	Kilopascal
`PNEUMATICS COMPONENT VOLUME`	Component Name	This can be used to retrieve the current volume defined for the named pnuematic component.NOTE: You can only use the component name with this SimVar, not the index.	Cubic Meters
`PNEUMATICS DIFFERENTIAL PRESSURE`	N/A	The pressure difference between the cabin and the exterior.	psi
`PNEUMATICS DUCT PRESSURE`	Pact Name (or index)	The current pressure of the airflow that enters the named Pack.	psi
`PNEUMATICS DUCT TEMPERATURE`	Area Name (or index)	The current temperature of the airflow being pushed into the named Area of the plane, before it’s mixed with the air already in the area.	Celsius
`PNEUMATICS ENGINE BLEED AIR`	Engine Index	Whether or not the indexed Engine bleed air is active.	Boolean
`PNEUMATICS ENGINE BLEED AIR PRESSURE`	Engine Index	This will return the pressure of the air inside the indexed Engine, and not the bleed air pressure (for that please use `PNEUMATICS ENGINE BLEED AIR PRESSURE EX1`).	psi
`PNEUMATICS ENGINE BLEED AIR PRESSURE EX1`	Engine Index	The pressure of the bleed air exiting the indexed Engine.	psi
`PNEUMATICS ENGINE BLEED AIR TEMPERATURE`	Engine Index	The temperature of the bleed air exiting from the indexed Engine.	Celsius
`PNEUMATICS FAN STATUS`	Fan Name (or index)	Returns the current activity status of the named Fan.	Percent Over 100
`PNEUMATICS FAN TARGET STATUS`	Fan Name (or index)	Returns the target activity status of the named Fan.	Percent Over 100
`PNEUMATICS FAN SWITCH`	Fan Name (or index)	Whether or not the named Fan is active (1, TRUE) or not (0, FALSE).	Boolean
`PNEUMATICS JUNCTION LINE OPENING STATUS:name1:name2`	[0] Junction index[1] Line Index	The opening status of a line onto a junction. Index 1 is the Junction index, and index 2 is the Line index.	Percent Over 100
`PNEUMATICS PACK FLOW`	Pack Name (or index)	The current airflow rate of the named Pack, expressed as a Percent Over 100.	Percent Over 100
`PNEUMATICS PACK FLOW AUTO`	Pack Name (or index)	Whether or not the named Pack airflow is handled automatically (1, TRUE) or not (0, FALSE).	Boolean
`PNEUMATICS PACK FLOW MODE`	Pack Name (or index)	The current airflow mode of the named Pack.	Enum:0 = Low1 = Normal2 = High
`PNEUMATICS PACK FLOW MODE VALUE:name1:name2`	[0] Pack Name (or index)[1] Mode	The current airflow rate for the named pack using a given flow mode. Index 1 is the Pack index, and index 2 is the flow mode to check, one of the following:0 = Low1 = Normal2 = High	Percent Over 100
`PNEUMATICS PACK FLOW MODE VALUE HIGH`	Pack Name (or index)	The airflow rate for the named Pack on the high flow mode.	Percent Over 100
`PNEUMATICS PACK FLOW MODE VALUE LOW`	Pack Name (or index)	The airflow rate for the named Pack on the low flow mode.	Percent Over 100
`PNEUMATICS PACK FLOW MODE VALUE NORM`	Pack Name (or index)	The airflow rate for the named Pack on the normal flow mode.	Percent Over 100
`PNEUMATICS PACK STATUS`	Pack Name (or index)	The current status of the named Pack, either enabled (1, TRUE), or disabled (0, FALSE).	Boolean
`PNEUMATICS PACK SWITCH`	Pack Name (or index)	The status of the switch for the named Pack, either on (1, TRUE), or off (0, FALSE).	Boolean
`PNEUMATICS PACK TEMPERATURE`	Pack Name (or index)	The current temperature output of the named Pack.	Celsius
`PNEUMATICS TARGET CABIN ALTITUDE`	N/A	The target pressure altitude of the aircraft cabin.	ft
`PNEUMATICS VALVE MODE`	Valve Name (or index)	The current mode of the named Valve.	Enum:0 = Open1 = Auto2 = Closed
`PNEUMATICS VALVE STATUS`	Valve Name (or index)	The current amount that the named Valve is open, expressed as a Percent Over 100.	Percent Over 100
`PNEUMATICS VALVE TARGET STATUS`	Valve Name (or index)	The target amount that the named Valve should open to, expressed as a Percent Over 100.	Percent Over 100
`PNEUMATICS VALVE SWITCH`	Valve Name (or index)	Whether or not the named Valve is set to be opened (1, TRUE) or not (0, FALSE).	Boolean

Aircraft Pressure

Simulation Variable	Index	Description	Units
`PRESSURE ALTITUDE`	N/A	Standard Altitude, ie: at a 1013.25 hPa (1 atmosphere) setting.	Meters
`PRESSURIZATION CABIN ALTITUDE`	N/A	The current altitude of the cabin pressurization.	Feet
`PRESSURIZATION CABIN ALTITUDE GOAL`	N/A	The set altitude of the cabin pressurization as initialised from the `design_cabin_pressure` value in the `systems.cfg` file. Pressure is converted into an altitude using a standard condition table.You can adjust the goal pressure using the `PRESSURIZATION_PRESSURE_ALT_INC` and `PRESSURIZATION_PRESSURE_ALT_DEC` events.	Feet
`PRESSURIZATION CABIN ALTITUDE RATE`	N/A	The rate at which cabin pressurization changes.	Feet per second
`PRESSURIZATION DUMP SWITCH`	N/A	True if the cabin pressurization dump switch is on.	Bool
`PRESSURIZATION PRESSURE DIFFERENTIAL`	N/A	The difference in pressure between the current cabin pressure and the ambient pressure.	Pounds per square foot, psf

Partial Panels

Simulation Variable	Description	Units
`PARTIAL PANEL ADF`	Gauge fail flag.	Enum:0 = ok1 = fail2 = blank
`PARTIAL PANEL AIRSPEED`	Gauge fail flag.	Enum:0 = ok1 = fail2 = blank
`PARTIAL PANEL ALTIMETER`	Gauge fail flag.	Enum:0 = ok1 = fail2 = blank
`PARTIAL PANEL ATTITUDE`	Gauge fail flag.	Enum:0 = ok1 = fail2 = blank
`PARTIAL PANEL AVIONICS`	Gauge fail flag.	Enum:0 = ok1 = fail2 = blank
`PARTIAL PANEL COMM`	Gauge fail flag.	Enum:0 = ok1 = fail2 = blank
`PARTIAL PANEL COMPASS`	Gauge fail flag.	Enum:0 = ok1 = fail2 = blank
`PARTIAL PANEL ELECTRICAL`	Gauge fail flag.	Enum:0 = ok1 = fail2 = blank
`PARTIAL PANEL ENGINE`	Gauge fail flag.	Enum:0 = ok1 = fail2 = blank
`PARTIAL PANEL FUEL INDICATOR`	Gauge fail flag.	Enum:0 = ok1 = fail2 = blank
`PARTIAL PANEL HEADING`	Gauge fail flag.	Enum:0 = ok1 = fail2 = blank
`PARTIAL PANEL NAV`	Gauge fail flag.	Enum:0 = ok1 = fail2 = blank
`PARTIAL PANEL PITOT`	Gauge fail flag.	Enum:0 = ok1 = fail2 = blank
`PARTIAL PANEL TRANSPONDER`	Gauge fail flag.	Enum:0 = ok1 = fail2 = blank
`PARTIAL PANEL TURN COORDINATOR`	Gauge fail flag.	Enum:0 = ok1 = fail2 = blank
`PARTIAL PANEL VACUUM`	Gauge fail flag.	Enum:0 = ok1 = fail2 = blank
`PARTIAL PANEL VERTICAL VELOCITY`	Gauge fail flag.	Enum:0 = ok1 = fail2 = blank

Payload Stations

Simulation Variable	Index	Description	Units
`DROPPABLE OBJECTS COUNT`	Station Name (or index)	The number of droppable objects at the station number identified by the index.	Number
`DROPPABLE OBJECTS TYPE`	Station Name (or index)	The type of droppable object at the station number identified by the index.	String
`DROPPABLE OBJECTS UI NAME`	Station Name (or index)	The descriptive name of a droppable object, identified by its index, which is used in UI dialogs.	String
`PAYLOAD STATION COUNT`	N/A	Number of payload stations (1 to 15).	Number
`PAYLOAD STATION NAME`	Station Name (or index)	Descriptive name for payload station.	String
`PAYLOAD STATION NUM SIMOBJECTS`	Station Name (or index)	The number of objects at the payload station.	Number
`PAYLOAD STATION OBJECT`	Station Name (or index)	Places the named object at the payload station identified by the index (starting from 1). The string is the Container name (refer to the title property of Simulation Object Configuration Files).	String
`PAYLOAD STATION WEIGHT`	Station Name (or index)	Individual payload station weight.	Pounds

Tow Cable / Hook

Simulation Variable	Index	Description	Units
`GRAPPLE HOOK SET`	N/A	This will return how open the grapple hook is, expressed as a Percent Over 100 where 0 is fully closed and 1 is fully open.	Percent Over 100
`LEAD POLE SET`	N/A	This will return how far the lead pole is extended, expressed as a Percent Over 100 where 0 is no extension and 1 is fully extended.	Percent Over 100
`TOW CABLE RELEASE REASON`	N/A	This will return the reason for which the tow cable was released.	Enum:0: none1: other2: user input3: winch at maximum angle4: towplane has crashed5: towplane in unsafe position6: towplane end of climb
`TOW CABLE TENSION`	N/A	The tension within the tow cable expressed as a Percent Over 100, where 0 is no tension, and 1 is full tension.	Percent Over 100
`TOW CONNECTION`	N/A	This will return 1 (TRUE) if a towline is connected to both the tow plane or winch and the glider, or 0 (FALSE) otherwise.	Bool
`TOW PLANE CONNECTION`	N/A	This will return 1 (TRUE) if a towline is connected to both a tow plane and the glider, or 0 (FALSE) otherwise.	Bool
`TOW RELEASE HANDLE`	N/A	This will return the position of the tow release handle, expressed as Percent Over 100, where 0 is not deployed and 1 is fully deployed.	Percent Over 100
`TOW WINCH CONNECTION`	N/A	This will return 1 (TRUE) if a towline is connected to both a winch and the glider, or 0 (FALSE) otherwise.	Bool
`TAILHOOK HANDLE`	N/A	This will return 1 (TRUE) if the tailhook handle is engaged, or 0 (FALSE) otherwise.	Bool
`TAILHOOK POSITION`	N/A	The amount that the tailhook is extended expressed as a Percent Over 100, where 0 is the tailhook is not extended at all, and 1 is the tail hook fully extended.	Percent Over 100

Night Vision

Simulation Variable	Parameters	Description	Units
`NIGHT VISION AVAILABLE`	N/A	Will return whether the aircraft pilot has night vision (1, TRUE) or not (0, FALSE).	Bool
`NIGHT VISION DISPLAYED`	[0] Bool	Can be use to get or set whether the night vision display is on (1, TRUE) or off (0, FALSE).	Bool
`NIGHT VISION INTENSITY`	[0] Float	Can be used to get or set the intensity of the night vision effect. When setting the intensity, values should be between 0 (lowest intensity) and 300 (highest intensity).	Float

Exits

Simulation Variable		Description	Units
`EXIT OPEN`	N/A	Percent door/exit open.	Percent Over 100
`EXIT POSX`	N/A	Position of exit relative to datum reference point.	Feet
`EXIT POSY`	N/A	Position of exit relative to datum reference point.	Feet
`EXIT POSZ`	N/A	Position of exit relative to datum reference point.	Feet
`EXIT TYPE`	N/A	The exit type.	Enum:0 = Main1 = Cargo2 = Emergency3 = Unknown

Aircraft Radio Navigation Variables

WebAssembly

Flighting

SDK Documentation

Aircraft System Variables

General

Variometer

Water Ballast

Liquid Dropping System

Lights

Hydraulics

Pneumatics

Aircraft Pressure

Partial Panels

Payload Stations

Tow Cable / Hook

Night Vision

Exits

Aircraft System Variables

General#

Variometer#

Water Ballast#

Liquid Dropping System#

Lights#

Hydraulics#

Pneumatics#

Aircraft Pressure#

Partial Panels#

Payload Stations#

Tow Cable / Hook#

Night Vision#

Exits#

General

Variometer

Water Ballast

Liquid Dropping System

Lights

Hydraulics

Pneumatics

Aircraft Pressure

Partial Panels

Payload Stations

Tow Cable / Hook

Night Vision

Exits