Simulator interfaces

An index of documented simulator variables and commands, with links to SDK and aircraft-developer documentation.

SimConnect ↗

The simulator’s programming interface and SDK documentation.

X-Plane SDK ↗

Plugin APIs, data access and official developer resources.

A documented signal is not a compatibility guarantee. Check the simulator version, add-on version, units and meaning. A zero value alone does not establish availability.

Documented signals

95 entries

B: InputEventB:AS65_AFCS_C_TRIM_PRESET_SetBoolean +

HH65 trim preset input for collective/pitch/roll/yaw respectively; not actual trim position.

Access: write command
Version scope: keybinding guide v1.0; HH65 only

Download Key binding guide · PDF p3 ↗

B: InputEventB:AS65_AFCS_CUTOFF_PRESET_SetBoolean +

Momentary AFCS cutoff input in both variants.

Access: write command
Version scope: public documentation snapshot 2026-09-10

Download Key binding guide · PDF p3 ↗

B: InputEventB:AS65_AFCS_P_TRIM_PRESET_SetBoolean +

HH65 trim preset input for collective/pitch/roll/yaw respectively; not actual trim position.

Access: write command
Version scope: keybinding guide v1.0; HH65 only

Download Key binding guide · PDF p3 ↗

B: InputEventB:AS65_AFCS_R_TRIM_PRESET_SetBoolean +

HH65 trim preset input for collective/pitch/roll/yaw respectively; not actual trim position.

Access: write command
Version scope: keybinding guide v1.0; HH65 only

Download Key binding guide · PDF p3 ↗

B: InputEventB:AS65_AFCS_SAS_ASE_PRESET_Setenum +

AS365 SAS/ASE selector input.

Access: write command
Version scope: keybinding guide v1.0; AS365 only

Download Key binding guide · PDF p3 ↗

B: InputEventB:AS65_AFCS_Y_TRIM_PRESET_SetBoolean +

HH65 trim preset input for collective/pitch/roll/yaw respectively; not actual trim position.

Access: write command
Version scope: keybinding guide v1.0; HH65 only

Download Key binding guide · PDF p3 ↗

B: InputEventB:AS65_COLLECTIVE_AS365_Setinteger command scale +

AS365 collective demand. Command direction must follow the guide; this is not trim/servo telemetry.

Access: write command; not readback
Version scope: keybinding guide v1.0; AS365/HH65 variant-specific

Download Key binding guide · PDF p2 ↗

B: InputEventB:AS65_COLLECTIVE_HH65_Setinteger command scale +

HH65 collective demand. Command direction must follow the guide; this is not trim/servo telemetry.

Access: write command; not readback
Version scope: keybinding guide v1.0; AS365/HH65 variant-specific

Download Key binding guide · PDF p2 ↗

B: InputEventB:AS65_CYCLIC_LATERAL_AS365_Setinteger command scale +

AS365 lateral cyclic demand. Command direction must follow the guide; this is not trim/servo telemetry.

Access: write command; not readback
Version scope: keybinding guide v1.0; AS365/HH65 variant-specific

Download Key binding guide · PDF p2 ↗

B: InputEventB:AS65_CYCLIC_LATERAL_HH65_Setinteger command scale +

HH65 lateral cyclic demand. Command direction must follow the guide; this is not trim/servo telemetry.

Access: write command; not readback
Version scope: keybinding guide v1.0; AS365/HH65 variant-specific

Download Key binding guide · PDF p2 ↗

B: InputEventB:AS65_CYCLIC_LONGITUDINAL_AS365_Setinteger command scale +

AS365 longitudinal cyclic demand. Command direction must follow the guide; this is not trim/servo telemetry.

Access: write command; not readback
Version scope: keybinding guide v1.0; AS365/HH65 variant-specific

Download Key binding guide · PDF p2 ↗

B: InputEventB:AS65_CYCLIC_LONGITUDINAL_HH65_Setinteger command scale +

HH65 longitudinal cyclic demand. Command direction must follow the guide; this is not trim/servo telemetry.

Access: write command; not readback
Version scope: keybinding guide v1.0; AS365/HH65 variant-specific

Download Key binding guide · PDF p2 ↗

B: InputEventB:AS65_TAIL_ROTOR_AS365_Setinteger command scale +

AS365 tail rotor demand. Command direction must follow the guide; this is not trim/servo telemetry.

Access: write command; not readback
Version scope: keybinding guide v1.0; AS365/HH65 variant-specific

Download Key binding guide · PDF p2 ↗

B: InputEventB:AS65_TAIL_ROTOR_HH65_Setinteger command scale +

HH65 tail rotor demand. Command direction must follow the guide; this is not trim/servo telemetry.

Access: write command; not readback
Version scope: keybinding guide v1.0; AS365/HH65 variant-specific

Download Key binding guide · PDF p2 ↗

commandSAS/autopilot_disconnectnone +

Disconnect upper modes; SAS behavior follows the manual.

Access: execute command
Version scope: shared Cowan XP SAS manual; installed package must supply command

SAS Manual · PDF p4; shared SAS command list ↗

commandSAS/autopilot_disconnectnone +

Disconnect upper modes; SAS behavior follows the manual.

Access: execute command
Version scope: shared Cowan XP SAS manual; installed package must supply command

SAS Manual · PDF p4; shared SAS command list ↗

commandSAS/force_trim_releasenone +

Hold/release FTR; SAS engagement gesture described separately.

Access: execute command
Version scope: shared Cowan XP SAS manual; installed package must supply command

SAS Manual · PDF p4; shared SAS command list ↗

commandSAS/force_trim_releasenone +

Hold/release FTR; SAS engagement gesture described separately.

Access: execute command
Version scope: shared Cowan XP SAS manual; installed package must supply command

SAS Manual · PDF p4; shared SAS command list ↗

dataref1-sim/output/mcp/okBoolean-like status; full range not specified +

MCP operational status; not AP-servo engagement or force authority.

Access: read output
Version scope: 777v2 release notes v2.2.2

FlightFactor 777 v2 official changelog · v2.2.2 external MCP datarefs ↗

datarefsim/aircraft/forcefeedback/acf_ff_stickshakerboolean +

Aircraft configuration says a shaker exists; not active warning.

Access: MUTABLE
Version scope: since 6.60.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/aircraft/forcefeedback/acf_ff_stickshaker ↗

datarefsim/cockpit2/annunciators/stall_warningboolean +

Stall annunciation; not a dedicated shaker or pusher output.

Access: READONLY
Version scope: since 9.0.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/cockpit2/annunciators/stall_warning ↗

datarefsim/cockpit2/annunciators/stall_warning_ratioratio +

Variable stall-warning indication.

Access: MUTABLE
Version scope: since 10.50.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/cockpit2/annunciators/stall_warning_ratio ↗

datarefsim/cockpit2/autopilot/autopilot_onboolean +

AP active after electrical and failure conditions.

Access: READONLY
Version scope: since 9.30.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/cockpit2/autopilot/autopilot_on ↗

datarefsim/cockpit2/autopilot/autopilot_on_or_cwsboolean +

AP stays active during temporary CWS servo release.

Access: READONLY
Version scope: since 11.30.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/cockpit2/autopilot/autopilot_on_or_cws ↗

datarefsim/cockpit2/autopilot/pitch_mistrimenum +

Manual trim request: -1 down, 0 none, +1 up.

Access: ACCESSOR
Version scope: since 11.30.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/cockpit2/autopilot/pitch_mistrim ↗

datarefsim/cockpit2/autopilot/servos_onboolean +

Servo engagement accounting for CWS, failure and FD state.

Access: READONLY
Version scope: since 9.30.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/cockpit2/autopilot/servos_on ↗

datarefsim/cockpit2/controls/flap_handle_request_ratioratio +

Current preferred flap-handle request; not surface position.

Access: MUTABLE
Version scope: since 12.0.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/cockpit2/controls/flap_handle_request_ratio ↗

datarefsim/cockpit2/controls/speedbrake_ratioratio +

Handle request including armed position; not measured spoiler travel.

Access: MUTABLE
Version scope: since 9.0.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/cockpit2/controls/speedbrake_ratio ↗

datarefsim/cockpit2/controls/torque_tube_split_pitchboolean +

Pilot/copilot pitch linkage disconnect state.

Access: MUTABLE
Version scope: since 12.0.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/cockpit2/controls/torque_tube_split_pitch ↗

datarefsim/cockpit2/controls/torque_tube_split_rollboolean +

Pilot/copilot roll linkage disconnect state.

Access: MUTABLE
Version scope: since 12.0.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/cockpit2/controls/torque_tube_split_roll ↗

datarefsim/cockpit2/controls/total_pitch_ratio[-1..1] +

Combined pilot, AP and augmentation pitch input.

Access: MUTABLE
Version scope: since 11.30.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/cockpit2/controls/total_pitch_ratio ↗

datarefsim/cockpit2/controls/total_roll_ratio[-1..1] +

Combined pilot, AP and augmentation roll input.

Access: MUTABLE
Version scope: since 11.30.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/cockpit2/controls/total_roll_ratio ↗

datarefsim/cockpit2/controls/yoke_pitch_ratio-1..1 +

Pilot pitch input; negative forward, positive aft.

Access: MUTABLE
Version scope: since 9.0.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/cockpit2/controls/yoke_pitch_ratio ↗

datarefsim/cockpit2/controls/yoke_roll_ratio-1..1 +

Pilot roll input; negative left, positive right.

Access: MUTABLE
Version scope: since 9.0.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/cockpit2/controls/yoke_roll_ratio ↗

datarefsim/cockpit2/engine/indicators/N1_percentpercent +

Engine N1 display value.

Access: MUTABLE
Version scope: since 9.0.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/cockpit2/engine/indicators/N1_percent ↗

datarefsim/cockpit2/engine/indicators/prop_speed_rpmrevolutions/minute +

Propeller rotational speed.

Access: READONLY
Version scope: since 9.40.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/cockpit2/engine/indicators/prop_speed_rpm ↗

datarefsim/cockpit2/hydraulics/indicators/hydraulic_pressure_1any +

Hydraulic pressure with aircraft-defined units.

Access: READONLY
Version scope: since 9.30.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/cockpit2/hydraulics/indicators/hydraulic_pressure_1 ↗

datarefsim/cockpit2/hydraulics/indicators/hydraulic_pressure_2any +

Second hydraulic pressure with aircraft-defined units.

Access: READONLY
Version scope: since 9.30.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/cockpit2/hydraulics/indicators/hydraulic_pressure_2 ↗

datarefsim/cockpit2/hydraulics/indicators/hydraulic_pressure_3any +

Third hydraulic pressure; version-specific availability.

Access: READONLY
Version scope: since 12.0.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/cockpit2/hydraulics/indicators/hydraulic_pressure_3 ↗

datarefsim/flightmodel/controls/elv_trim[-1..1] +

Elevator trim; negative nose-down and positive nose-up.

Access: ACCESSOR
Version scope: since 6.60.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/flightmodel/controls/elv_trim ↗

datarefsim/flightmodel/misc/slung_load_xmeters +

Slung object global x position, not cable force.

Access: READONLY
Version scope: since 10.50.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/flightmodel/misc/slung_load_x ↗

datarefsim/flightmodel/misc/slung_load_ymeters +

Slung object global y position, not cable force.

Access: READONLY
Version scope: since 10.50.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/flightmodel/misc/slung_load_y ↗

datarefsim/flightmodel/misc/slung_load_zmeters +

Slung object global z position, not cable force.

Access: READONLY
Version scope: since 10.50.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/flightmodel/misc/slung_load_z ↗

datarefsim/flightmodel/misc/slung_obj_phidegrees +

Slung object roll.

Access: READONLY
Version scope: since 12.0.5; status CURRENT

Datarefs registry machine-readable snapshot · sim/flightmodel/misc/slung_obj_phi ↗

datarefsim/flightmodel/misc/slung_obj_psidegrees +

Slung object heading.

Access: READONLY
Version scope: since 12.0.5; status CURRENT

Datarefs registry machine-readable snapshot · sim/flightmodel/misc/slung_obj_psi ↗

datarefsim/flightmodel/misc/slung_obj_thedegrees +

Slung object pitch.

Access: READONLY
Version scope: since 12.0.5; status CURRENT

Datarefs registry machine-readable snapshot · sim/flightmodel/misc/slung_obj_the ↗

datarefsim/flightmodel2/gear/tire_rotation_rate_rad_secradians/second +

Signed tire rotation, including reverse movement.

Access: READONLY
Version scope: since 12.1.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/flightmodel2/gear/tire_rotation_rate_rad_sec ↗

datarefsim/flightmodel2/gear/tire_rotation_speed_rad_secradians/second +

Nonnegative tire rotational speed.

Access: READONLY
Version scope: since 9.0.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/flightmodel2/gear/tire_rotation_speed_rad_sec ↗

datarefsim/flightmodel2/gear/tire_vertical_deflection_mtrmeters +

Gear strut deflection, not an exported force.

Access: READONLY
Version scope: since 9.0.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/flightmodel2/gear/tire_vertical_deflection_mtr ↗

datarefsim/operation/override/override_joystickboolean +

Whole joystick override includes keys, mouse and coordination.

Access: MUTABLE
Version scope: since 6.60.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/operation/override/override_joystick ↗

datarefsim/operation/override/override_joystick_pitchboolean +

Override only pitch input.

Access: MUTABLE
Version scope: since 7.10.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/operation/override/override_joystick_pitch ↗

datarefsim/operation/override/override_joystick_rollboolean +

Override only roll input.

Access: MUTABLE
Version scope: since 7.10.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/operation/override/override_joystick_roll ↗

datarefsim/world/winch/winch_initial_lengthmeters +

Configured initial winch cable length.

Access: MUTABLE
Version scope: since 10.30.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/world/winch/winch_initial_length ↗

datarefsim/world/winch/winch_max_bhpbhp +

Configured winch power ceiling, not actual rope tension.

Access: MUTABLE
Version scope: since 10.31.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/world/winch/winch_max_bhp ↗

datarefsim/world/winch/winch_ramp_up_time_secseconds +

Configured winch acceleration duration.

Access: MUTABLE
Version scope: since 10.30.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/world/winch/winch_ramp_up_time_sec ↗

datarefsim/world/winch/winch_speed_knotsknots +

Configured maximum winch speed.

Access: MUTABLE
Version scope: since 10.30.0; status CURRENT

Datarefs registry machine-readable snapshot · sim/world/winch/winch_speed_knots ↗

H eventH:H145_SDK_CYCLIC_FORCE_TRIM_SET_NEW_CENTERnot specified +

Cyclic force-trim new-center event.

Access: send
Version scope: Public guide snapshot; package unobserved

H145 SDK H events · SDK event entry ↗

K eventK:SYNC_FLIGHT_DIRECTOR_PITCHbutton/event +

Requires Control AP Pitch with Hardware Events tablet option.

Access: send
Version scope: v1.1 / SU15 notes

Turbine Duke manual · PDF page 161 ↗

LVarL:A32NX_HYD_{loop_name}_SYSTEM_1_SECTION_PRESSUREPsi +

Hydraulic circuit section pressure.

Access: read semantics documented; write contract not established
Version scope: API snapshot 2026-09-10

A32NX systems API · Flight Controls ATA27 ↗

LVarL:A32NX_HYD_RUDDER_TRIM_FEEDBACK_ANGLEDegree +

Rudder trim unit feedback.

Access: read semantics documented; write contract not established
Version scope: API snapshot 2026-09-10

A32NX systems API · Flight Controls ATA27 ↗

LVarL:A32NX_HYD_THS_TRIM_MANUAL_OVERRIDEBoolean +

Pilot moving or holding trim wheel.

Access: read semantics documented; write contract not established
Version scope: API snapshot 2026-09-10

A32NX systems API · Flight Controls ATA27 ↗

LVarL:A32NX_HYD_TRIM_WHEEL_PERCENTPercent +

Trim wheel position.

Access: read semantics documented; write contract not established
Version scope: API snapshot 2026-09-10

A32NX systems API · Flight Controls ATA27 ↗

LVarL:A32NX_RUDDER_PEDAL_POSITIONNumber +

Direct pedal position.

Access: read semantics documented; write contract not established
Version scope: API snapshot 2026-09-10

A32NX systems API · Flight Controls ATA27 ↗

LVarL:A32NX_SIDESTICK_POSITION_XNumber +

Direct lateral stick.

Access: read semantics documented; write contract not established
Version scope: API snapshot 2026-09-10

A32NX systems API · Flight Controls ATA27 ↗

LVarL:A32NX_SIDESTICK_POSITION_YNumber +

Direct longitudinal stick.

Access: read semantics documented; write contract not established
Version scope: API snapshot 2026-09-10

A32NX systems API · Flight Controls ATA27 ↗

LVarL:ApMasternot specified +

Autopilot master switch; not proof servos active.

Access: not specified by variable list
Version scope: Public list revision unlabelled

Comanche variables list · PDF page 3 ↗

LVarL:ApTrimDnLightbool +

Trim-down-required lamp.

Access: not specified by variable list
Version scope: Public list revision unlabelled

Comanche variables list · PDF page 1 ↗

LVarL:ApTrimUpLightbool +

Trim-up-required lamp.

Access: not specified by variable list
Version scope: Public list revision unlabelled

Comanche variables list · PDF page 1 ↗

LVarL:var_PilotCwsBoolean +

Pilot CWS button; aircraft-specific behavior.

Access: hardware control input; explicit readback contract unknown
Version scope: Archived manual revision

Turbine Duke manual · PDF page 140 ↗

LVarL:var_PilotCwsBoolean +

Pilot CWS button; aircraft-specific behavior.

Access: hardware control input; explicit readback contract unknown
Version scope: Archived manual revision

TBM 850 manual · PDF page 132 ↗

LVarL:var_PilotCwsBoolean +

Pilot CWS button; aircraft-specific behavior.

Access: hardware control input; explicit readback contract unknown
Version scope: Archived manual revision

Starship operations manual · PDF page 172 ↗

LVarL:var_PilotCwsBoolean +

Pilot CWS button; aircraft-specific behavior.

Access: hardware control input; explicit readback contract unknown
Version scope: Archived manual revision

Caravan Professional manual · PDF page 128 ↗

SimVarAUTOPILOT MASTERBool +

Master on/off flag; SDK excludes it from the short list guaranteed usable with helicopters.

Access: read; writeability not selected for this survey
Version scope: public documentation snapshot 2026-09-10

Aircraft autopilot and assistant variables · AUTOPILOT MASTER ↗

SimVarAUTOPILOT PITCH HOLD REFRadians +

Attitude reference, not servo position; documented for helicopters.

Access: read; writeability not selected for this survey
Version scope: public documentation snapshot 2026-09-10

Aircraft autopilot and assistant variables · AUTOPILOT PITCH HOLD REF ↗

SimVarBRAKE LEFT POSITIONPosition (0 to 32K) +

Left brake input. EX1 is a distinct action and not interchangeable.

Access: read; writeability not selected for this survey
Version scope: public documentation snapshot 2026-09-10

MSFS 2024 brake and landing gear variables · BRAKE LEFT POSITION ↗

SimVarCOLLECTIVE POSITIONPercent Over 100 +

Collective position; direction requires runtime confirmation.

Access: read; settable flag not reviewed
Version scope: MSFS2024 SDK snapshot

Helicopter variables · Collective ↗

SimVarCONTACT POINT COMPRESSIONPosition (SDK label) +

Named contact-point compression. Preserve the SDK unit/description mismatch.

Access: read; writeability not selected for this survey
Version scope: public documentation snapshot 2026-09-10

MSFS 2024 brake and landing gear variables · CONTACT POINT COMPRESSION ↗

SimVarCONTACT POINT IS ON GROUNDBool +

Named contact-point ground contact.

Access: read; writeability not selected for this survey
Version scope: public documentation snapshot 2026-09-10

MSFS 2024 brake and landing gear variables · CONTACT POINT IS ON GROUND ↗

SimVarELEVATOR DEFLECTIONradians +

Surface angle.

Access: read; settable flag not reviewed
Version scope: MSFS2024 SDK snapshot

Aircraft control variables · ELEVATOR DEFLECTION ↗

SimVarELEVATOR TRIM MAXradians +

Upper trim travel limit.

Access: read; settable flag not reviewed
Version scope: MSFS2024 SDK snapshot

Aircraft control variables · ELEVATOR TRIM MAX ↗

SimVarELEVATOR TRIM MINradians +

Lower trim travel limit.

Access: read; settable flag not reviewed
Version scope: MSFS2024 SDK snapshot

Aircraft control variables · ELEVATOR TRIM MIN ↗

SimVarELEVATOR TRIM PCTPercent Over 100 +

Legacy normalization; SDK recommends EX1.

Access: read; settable flag not reviewed
Version scope: MSFS2024 SDK snapshot

Aircraft control variables · ELEVATOR TRIM PCT ↗

SimVarELEVATOR TRIM PCTpercent (A2A request) +

Elevator trim handle binding.

Access: not specified by list
Version scope: Public list revision unlabelled

Comanche variables list · PDF page 8 ↗

SimVarELEVATOR TRIM PCT EX1ratio +

Normalized travel; midpoint need not be zero degrees.

Access: read; settable flag not reviewed
Version scope: MSFS2024 SDK snapshot

Aircraft control variables · ELEVATOR TRIM PCT EX1 ↗

SimVarELEVATOR TRIM PCT EX2ratio +

Asymmetric normalization; documentation wording conflicts about midpoint.

Access: read; settable flag not reviewed
Version scope: MSFS2024 SDK snapshot

Aircraft control variables · ELEVATOR TRIM PCT EX2 ↗

SimVarELEVATOR TRIM POSITIONradians +

Trim angle.

Access: read; settable flag not reviewed
Version scope: MSFS2024 SDK snapshot

Aircraft control variables · ELEVATOR TRIM POSITION ↗

SimVarGENERAL ENG RPMRPM +

Indexed engine speed.

Access: read; writeability not selected for this survey
Version scope: public documentation snapshot 2026-09-10

MSFS 2024 engine variables · GENERAL ENG RPM ↗

SimVarHYDRAULIC PRESSUREpsf +

Pressure semantics depend on hydraulic model and pump identity.

Access: read; writeability not selected for this survey
Version scope: public documentation snapshot 2026-09-10

MSFS 2024 system variables · HYDRAULIC PRESSURE ↗

SimVarHYDRAULIC SYSTEM INTEGRITYPercent Over 100 +

Named hydraulic component integrity; numeric index not accepted.

Access: read; writeability not selected for this survey
Version scope: public documentation snapshot 2026-09-10

MSFS 2024 system variables · HYDRAULIC SYSTEM INTEGRITY ↗

SimVarPROP RPMRPM +

Indexed propeller speed.

Access: read; writeability not selected for this survey
Version scope: public documentation snapshot 2026-09-10

MSFS 2024 engine variables · PROP RPM ↗

SimVarROTOR LATERAL TRIM PCTPercent Over 100 +

Rotor lateral trim.

Access: read; settable flag not reviewed
Version scope: MSFS2024 SDK snapshot

Helicopter variables · Rotors ↗

SimVarSPOILERS LEFT POSITIONPercent Over 100 +

Left actual spoiler extension.

Access: read; settable flag not reviewed
Version scope: MSFS2024 SDK snapshot

Aircraft control variables · SPOILERS LEFT POSITION ↗

SimVarWHEEL RPMRPM +

Wheel rotational speed, not strut acceleration.

Access: read; writeability not selected for this survey
Version scope: public documentation snapshot 2026-09-10

MSFS 2024 brake and landing gear variables · WHEEL RPM ↗

SimVarYOKE Y POSITIONPosition +

Fore/aft animation.

Access: read; settable flag not reviewed
Version scope: MSFS2024 SDK snapshot

Aircraft control variables · YOKE Y POSITION ↗

SimVarYOKE Y POSITION WITH APPosition +

Animation including AP; not an isolated servo output.

Access: read; settable flag not reviewed
Version scope: MSFS2024 SDK snapshot

Aircraft control variables · YOKE Y POSITION WITH AP ↗

Developer documentation

↗Fenix public external hardware binding guideFenix Simulations↗↗A32NX systems APIFlyByWire↗↗ToLiss developer explanation of sensor-model datarefsToLiss developer on X-Plane.org↗↗H145 SDK H eventsHype Performance Group↗↗PMDG 777 SDK broadcast setupPMDG support forum↗

Simulator interfaces

SimConnect ↗

X-Plane SDK ↗

Documented signals

Developer documentation

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