# Engines<no value>

{{< callout context="caution" title="IMPORTANT!" icon="outline/alert-triangle" >}}

Token Variables - along with the [Gauge API](../../gauge-api/) - have been deprecated in Microsoft Flight Simulator 2024 in favour of the new [Vars API](../../../vars-api/vars-api/) and [Event API](../../../event-api/event-api/), which work with the more extensive and supported [Simulation Variables](../../../../simvars/simulation-variables/) and [Key Events](../../../../key-events/key-events-index/).

{{< /callout >}}

This page lists the available **engine** [Token Variables](../token-variables/) for use when creating gauges using {{< glossterm >}}wasm{{< /glossterm >}} / C++.


### General Engine Vars

{{< table-wrapper >}}

| Parameters | Universal Var Member | Description |
|---|---|---|
| <a id="COWL_FLAPS"></a>`COWL_FLAPS` | `n` (FLOAT64) | The cowl flaps position expressed as a {{< glossterm >}}percent_over_100{{< /glossterm >}}, where 0 is closed and 1 is open. |
| <a id="ENGINE_PRIMER"></a>`ENGINE_PRIMER` | `n` (FLOAT64) | The engine primer position expressed as a {{< glossterm >}}percent_over_100{{< /glossterm >}}, where 0 is in and 1 is out. |
| <a id="ENGINE_RPM_HOLD"></a>`ENGINE_RPM_HOLD` | `n` (FLOAT64) | Specifies the {{< glossterm >}}rpm{{< /glossterm >}} hold variable. |
| <a id="ENGINE_WORKING_TIME"></a>`ENGINE_WORKING_TIME` | `n` (FLOAT64) | The total time that the engine has been running, in seconds. |
| <a id="ENGINE_CONTROL_SELECT"></a>`ENGINE_CONTROL_SELECT` | `f` (FLAGS) | Specifies which engine will be controlled, using a combination of bit flags where:<span></span>{{< params/smallfont-list >}}1 = Engine 1<span></span>2 = Engine 2<span></span>4 = Engine 3<span></span>8 = Engine 4{{< /params/smallfont-list >}} |
| <a id="ENGINE1_MAX_RPM"></a>`ENGINE1_MAX_RPM`<span></span><a id="ENGINE2_MAX_RPM"></a>`ENGINE2_MAX_RPM`<span></span><a id="ENGINE3_MAX_RPM"></a>`ENGINE3_MAX_RPM`<span></span><a id="ENGINE4_MAX_RPM"></a>`ENGINE4_MAX_RPM` | `n` (FLOAT64) | The maximum attained {{< glossterm >}}rpm{{< /glossterm >}} for engine 1/2/3/4 where 0 is 0% and 16384 is 100% |
| <a id="ENGINE1_ON_FIRE"></a>`ENGINE1_ON_FIRE`<span></span><a id="ENGINE2_ON_FIRE"></a>`ENGINE2_ON_FIRE`<span></span><a id="ENGINE3_ON_FIRE"></a>`ENGINE3_ON_FIRE`<span></span><a id="ENGINE4_ON_FIRE"></a>`ENGINE4_ON_FIRE` | `b` (BOOL) | Whether engine 1/2/3/4 is on fire (TRUE, 1) or not (FALSE, 0). |
| <a id="GENERAL_ENG_COMBUSTION_EX1"></a>`GENERAL_ENG_COMBUSTION_EX1` | `b` (BOOL) | Whether the engine combustion flag is set (TRUE, 1) or not (FALSE, 0). |
| <a id="GENERAL_ENG_FUEL_PUMP_SWITCH_EX1"></a>`GENERAL_ENG_FUEL_PUMP_SWITCH_EX1` | `e` (ENUM)<span></span>{{< params/smallfont-list >}}0 = Off<span></span>1 = On<span></span>2 = Auto{{< /params/smallfont-list >}} | The fuel pump switch state. |
| <a id="GENERAL_ENG_HOBBS_ELAPSED_TIME"></a>`GENERAL_ENG_HOBBS_ELAPSED_TIME` | `n` (FLOAT64) | The elapsed Hobbs time, in seconds. |
| <a id="GENERAL_ENGINE1_ANTI_ICE_POS"></a>`GENERAL_ENGINE1_ANTI_ICE_POS`<span></span><a id="GENERAL_ENGINE2_ANTI_ICE_POS"></a>`GENERAL_ENGINE2_ANTI_ICE_POS`<span></span><a id="GENERAL_ENGINE3_ANTI_ICE_POS"></a>`GENERAL_ENGINE3_ANTI_ICE_POS`<span></span><a id="GENERAL_ENGINE4_ANTI_ICE_POS"></a>`GENERAL_ENGINE4_ANTI_ICE_POS` | `n` (FLOAT64) | The anti-ice switch position for engine 1/2/3/4, either on (TRUE, 1) or off (FALSE, 0). |
| <a id="GENERAL_ENGINE1_EGT"></a>`GENERAL_ENGINE1_EGT`<span></span><a id="GENERAL_ENGINE2_EGT"></a>`GENERAL_ENGINE2_EGT`<span></span><a id="GENERAL_ENGINE3_EGT"></a>`GENERAL_ENGINE3_EGT`<span></span><a id="GENERAL_ENGINE4_EGT"></a>`GENERAL_ENGINE4_EGT` | `n` (FLOAT64) | The engine 1/2/3/4 {{< glossterm >}}egt{{< /glossterm >}}, in degrees Rankine. |
| <a id="GENERAL_ENGINE1_FAILURE"></a>`GENERAL_ENGINE1_FAILURE`<span></span><a id="GENERAL_ENGINE2_FAILURE"></a>`GENERAL_ENGINE2_FAILURE`<span></span><a id="GENERAL_ENGINE3_FAILURE"></a>`GENERAL_ENGINE3_FAILURE`<span></span><a id="GENERAL_ENGINE4_FAILURE"></a>`GENERAL_ENGINE4_FAILURE` | `b` (BOOL) | The engine fail flag for engines 1/2/3/4, either TRUE (1) or FALSE (0). |
| <a id="GENERAL_ENGINE1_GENERATOR_ACTIVE"></a>`GENERAL_ENGINE1_GENERATOR_ACTIVE`<span></span><a id="GENERAL_ENGINE2_GENERATOR_ACTIVE"></a>`GENERAL_ENGINE2_GENERATOR_ACTIVE`<span></span><a id="GENERAL_ENGINE3_GENERATOR_ACTIVE"></a>`GENERAL_ENGINE3_GENERATOR_ACTIVE`<span></span><a id="GENERAL_ENGINE4_GENERATOR_ACTIVE"></a>`GENERAL_ENGINE4_GENERATOR_ACTIVE` | `b` (BOOL) | Whether the generator alternator for engines 1/2/3/4 is active (TRUE, 1) or inactive (FALSE, 0). |
| <a id="GENERAL_ENGINE1_GENERATOR_SWITCH"></a>`GENERAL_ENGINE1_GENERATOR_SWITCH`<span></span><a id="GENERAL_ENGINE2_GENERATOR_SWITCH"></a>`GENERAL_ENGINE2_GENERATOR_SWITCH`<span></span><a id="GENERAL_ENGINE3_GENERATOR_SWITCH"></a>`GENERAL_ENGINE3_GENERATOR_SWITCH`<span></span><a id="GENERAL_ENGINE4_GENERATOR_SWITCH"></a>`GENERAL_ENGINE4_GENERATOR_SWITCH` | `b` (BOOL) | Whether the generator alternator switch for engines 1/2/3/4 is on (TRUE, 1) or off (FALSE, 0). |
| <a id="GENERAL_ENGINE1_MIXTURE_LEVER_POS"></a>`GENERAL_ENGINE1_MIXTURE_LEVER_POS`<span></span><a id="GENERAL_ENGINE2_MIXTURE_LEVER_POS"></a>`GENERAL_ENGINE2_MIXTURE_LEVER_POS`<span></span><a id="GENERAL_ENGINE3_MIXTURE_LEVER_POS"></a>`GENERAL_ENGINE3_MIXTURE_LEVER_POS`<span></span><a id="GENERAL_ENGINE4_MIXTURE_LEVER_POS"></a>`GENERAL_ENGINE4_MIXTURE_LEVER_POS` | `n` (FLOAT64) | The fuel mixture lever position for engines 1/2/3/4, expressed as a {{< glossterm >}}percent_over_100{{< /glossterm >}}. |
| <a id="GENERAL_ENGINE1_OIL_PRES"></a>`GENERAL_ENGINE1_OIL_PRES`<span></span><a id="GENERAL_ENGINE2_OIL_PRES"></a>`GENERAL_ENGINE2_OIL_PRES`<span></span><a id="GENERAL_ENGINE3_OIL_PRES"></a>`GENERAL_ENGINE3_OIL_PRES`<span></span><a id="GENERAL_ENGINE4_OIL_PRES"></a>`GENERAL_ENGINE4_OIL_PRES` | `n` (FLOAT64) | The oil pressure for engines 1/2/3/4, expressed in {{< glossterm >}}lbs{{< /glossterm >}}/{{< glossterm >}}sqft{{< /glossterm >}}. |
| <a id="GENERAL_ENGINE1_OIL_TEMP"></a>`GENERAL_ENGINE1_OIL_TEMP`<span></span><a id="GENERAL_ENGINE2_OIL_TEMP"></a>`GENERAL_ENGINE2_OIL_TEMP`<span></span><a id="GENERAL_ENGINE3_OIL_TEMP"></a>`GENERAL_ENGINE3_OIL_TEMP`<span></span><a id="GENERAL_ENGINE4_OIL_TEMP"></a>`GENERAL_ENGINE4_OIL_TEMP` | `n` (FLOAT64) | The oil temperature for engines 1/2/3/4, expressed in degrees Rankine. |
| <a id="GENERAL_ENGINE1_PROPELLER_LEVER_POS"></a>`GENERAL_ENGINE1_PROPELLER_LEVER_POS`<span></span><a id="GENERAL_ENGINE2_PROPELLER_LEVER_POS"></a>`GENERAL_ENGINE2_PROPELLER_LEVER_POS`<span></span><a id="GENERAL_ENGINE3_PROPELLER_LEVER_POS"></a>`GENERAL_ENGINE3_PROPELLER_LEVER_POS`<span></span><a id="GENERAL_ENGINE4_PROPELLER_LEVER_POS"></a>`GENERAL_ENGINE4_PROPELLER_LEVER_POS` | `n` (FLOAT64) | The propeller lever position for engines 1/2/3/4, expressed as a {{< glossterm >}}percent_over_100{{< /glossterm >}}. |
| <a id="GENERAL_ENGINE1_STARTER"></a>`GENERAL_ENGINE1_STARTER`<span></span><a id="GENERAL_ENGINE2_STARTER"></a>`GENERAL_ENGINE2_STARTER`<span></span><a id="GENERAL_ENGINE3_STARTER"></a>`GENERAL_ENGINE3_STARTER`<span></span><a id="GENERAL_ENGINE4_STARTER"></a>`GENERAL_ENGINE4_STARTER` | `n` (FLOAT64) | Whether the engine 1/2/3/4 starter is on (TRUE, 1) or of (FALSE, 0). |
| <a id="GENERAL_ENGINE1_THROTTLE_LEVER_POS"></a>`GENERAL_ENGINE1_THROTTLE_LEVER_POS`<span></span><a id="GENERAL_ENGINE2_THROTTLE_LEVER_POS"></a>`GENERAL_ENGINE2_THROTTLE_LEVER_POS`<span></span><a id="GENERAL_ENGINE3_THROTTLE_LEVER_POS"></a>`GENERAL_ENGINE3_THROTTLE_LEVER_POS`<span></span><a id="GENERAL_ENGINE4_THROTTLE_LEVER_POS"></a>`GENERAL_ENGINE4_THROTTLE_LEVER_POS` | `n` (FLOAT64) | The throttle lever position for engines 1/2/3/4, expressed as a {{< glossterm >}}percent_over_100{{< /glossterm >}}. |
| <a id="GENERAL_ENGINE1_THROTTLE_MANAGED_MODE"></a>`GENERAL_ENGINE1_THROTTLE_MANAGED_MODE`<span></span><a id="GENERAL_ENGINE2_THROTTLE_MANAGED_MODE"></a>`GENERAL_ENGINE2_THROTTLE_MANAGED_MODE`<span></span><a id="GENERAL_ENGINE3_THROTTLE_MANAGED_MODE"></a>`GENERAL_ENGINE3_THROTTLE_MANAGED_MODE`<span></span><a id="GENERAL_ENGINE4_THROTTLE_MANAGED_MODE"></a>`GENERAL_ENGINE4_THROTTLE_MANAGED_MODE` | `n` (FLOAT64) | The managed mode for the engine, where:<span></span>{{< params/smallfont-list >}}0 = Unknown<span></span>1 = Reverse<span></span>2 = Idle<span></span>3 = Auto<span></span>4 = Climb<span></span>5 = Flex MCT<span></span>6 = TOGA<span></span>7 = Hold{{< /params/smallfont-list >}} |
| <a id="NUMBER_OF_ENGINES"></a>`NUMBER_OF_ENGINES` | `n` (FLOAT64) | The number of engines on the aircraft. |

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### Propellers

{{< table-wrapper >}}

| Parameters | Universal Var Member | Description |
|---|---|---|
| <a id="PROP_ADVANCE_SELECTION"></a>`PROP_ADVANCE_SELECTION` | `e` (ENUM)<span></span>{{< params/smallfont-list >}}0 = fixed<span></span>1 = optimal<span></span>2 = manual.{{< /params/smallfont-list >}} | The propeller advance selection value. |
| <a id="PROPELLER_1_AUTOFEATHER_ARMED"></a>`PROPELLER_1_AUTOFEATHER_ARMED`<span></span><a id="PROPELLER_2_AUTOFEATHER_ARMED"></a>`PROPELLER_2_AUTOFEATHER_ARMED`<span></span><a id="PROPELLER_3_AUTOFEATHER_ARMED"></a>`PROPELLER_3_AUTOFEATHER_ARMED`<span></span><a id="PROPELLER_4_AUTOFEATHER_ARMED"></a>`PROPELLER_4_AUTOFEATHER_ARMED` | `b` (BOOL) | Whether the engine 1/2/3/4 propeller is auto feathering (TRUE, 1) or not (FALSE, 0). |
| <a id="PROPELLER_1_BETA"></a>`PROPELLER_1_BETA`<span></span><a id="PROPELLER_2_BETA"></a>`PROPELLER_2_BETA`<span></span><a id="PROPELLER_3_BETA"></a>`PROPELLER_3_BETA`<span></span><a id="PROPELLER_4_BETA"></a>`PROPELLER_4_BETA` | `n` (FLOAT64) | The propeller blade pitch angle for engine 1/2/3/4, in Radians. |
| <a id="PROPELLER_1_FEATHERED"></a>`PROPELLER_1_FEATHERED`<span></span><a id="PROPELLER_2_FEATHERED"></a>`PROPELLER_2_FEATHERED`<span></span><a id="PROPELLER_3_FEATHERED"></a>`PROPELLER_3_FEATHERED`<span></span><a id="PROPELLER_4_FEATHERED"></a>`PROPELLER_4_FEATHERED` | `b` (BOOL) | Whether the engine 1/2/3/4 propeller is feathered (TRUE, 1) or not (FALSE, 0). |
| <a id="PROPELLER_1_FEATHERING_INHIBIT"></a>`PROPELLER_1_FEATHERING_INHIBIT`<span></span><a id="PROPELLER_2_FEATHERING_INHIBIT"></a>`PROPELLER_2_FEATHERING_INHIBIT`<span></span><a id="PROPELLER_3_FEATHERING_INHIBIT"></a>`PROPELLER_3_FEATHERING_INHIBIT`<span></span><a id="PROPELLER_4_FEATHERING_INHIBIT"></a>`PROPELLER_4_FEATHERING_INHIBIT` | `b` (BOOL) | The state of the propeller feathering inhibit flag for engines 1/2/3/4, either enabled (TRUE, 1) or disabled (FALSE, 0). |
| <a id="PROPELLER_1_PCT_MAX_RPM"></a>`PROPELLER_1_PCT_MAX_RPM`<span></span><a id="PROPELLER_2_PCT_MAX_RPM"></a>`PROPELLER_2_PCT_MAX_RPM`<span></span><a id="PROPELLER_3_PCT_MAX_RPM"></a>`PROPELLER_3_PCT_MAX_RPM`<span></span><a id="PROPELLER_4_PCT_MAX_RPM"></a>`PROPELLER_4_PCT_MAX_RPM` | `n` (FLOAT64) | The percentage of the maximum rated RPM for the engine 1/2/3/4, expressed as a {{< glossterm >}}percent_over_100{{< /glossterm >}}. |
| <a id="PROPELLER_1_RPM"></a>`PROPELLER_1_RPM`<span></span><a id="PROPELLER_2_RPM"></a>`PROPELLER_2_RPM`<span></span><a id="PROPELLER_3_RPM"></a>`PROPELLER_3_RPM`<span></span><a id="PROPELLER_4_RPM"></a>`PROPELLER_4_RPM` | `n` (FLOAT64) | Propeller 1/2/3/4 {{< glossterm >}}rpm{{< /glossterm >}}. |
| <a id="PROPELLER_1_SYNC_DELTA_LEVER"></a>`PROPELLER_1_SYNC_DELTA_LEVER`<span></span><a id="PROPELLER_2_SYNC_DELTA_LEVER"></a>`PROPELLER_2_SYNC_DELTA_LEVER`<span></span><a id="PROPELLER_3_SYNC_DELTA_LEVER"></a>`PROPELLER_3_SYNC_DELTA_LEVER`<span></span><a id="PROPELLER_4_SYNC_DELTA_LEVER"></a>`PROPELLER_4_SYNC_DELTA_LEVER` | `n` (FLOAT64) | The propeller 1/2/3/4 sync lever position, where 65536 is fully down and 0 is fully up. |
| <a id="PROPELLER_1_THRUST"></a>`PROPELLER_1_THRUST`<span></span><a id="PROPELLER_2_THRUST"></a>`PROPELLER_2_THRUST`<span></span><a id="PROPELLER_3_THRUST"></a>`PROPELLER_3_THRUST`<span></span><a id="PROPELLER_4_THRUST"></a>`PROPELLER_4_THRUST` | `n` (FLOAT64) | The propeller 1/2/3/4 thrust, in {{< glossterm >}}lbs{{< /glossterm >}}. |
| <a id="PROPSYNC_ACTIVE"></a>`PROPSYNC_ACTIVE` | `b` (BOOL) | Whether the propeller sync is active (TRUE, 1) or not (FALSE, 0). |

{{< /table-wrapper >}}


### Reciprocal Engines

{{< table-wrapper >}}

| Parameters | Universal Var Member | Description |
|---|---|---|
| <a id="RECIP_ENG_ANTIDETONATION_FLOW_RATE"></a>`RECIP_ENG_ANTIDETONATION_FLOW_RATE` | `n` (FLOAT64) | The engine antidetonation flow rate, in {{< glossterm >}}gallons{{< /glossterm >}} per hour. |
| <a id="RECIP_ENG_ANTIDETONATION_TANK_MAX_QUANTITY"></a>`RECIP_ENG_ANTIDETONATION_TANK_MAX_QUANTITY` | `n` (FLOAT64) | The engine antidetonation tank maximum quantity, in {{< glossterm >}}gallons{{< /glossterm >}}. |
| <a id="RECIP_ENG_ANTIDETONATION_TANK_QUANTITY"></a>`RECIP_ENG_ANTIDETONATION_TANK_QUANTITY` | `n` (FLOAT64) | The engine antidetonation tank quantity, in {{< glossterm >}}gallons{{< /glossterm >}}. |
| <a id="RECIP_ENG_ANTIDETONATION_TANK_VALVE"></a>`RECIP_ENG_ANTIDETONATION_TANK_VALVE` | `b` (BOOL) | Whether the antidetonation tank valve is open (TRUE, 1) or not (FALSE, 0). |
| <a id="RECIP_ENG_CYLINDER_HEALTH"></a>`RECIP_ENG_CYLINDER_HEALTH` | `n` (FLOAT64) | The engine cylinder health expressed as a {{< glossterm >}}percent_over_100{{< /glossterm >}}. |
| <a id="RECIP_ENG_DETONATING"></a>`RECIP_ENG_DETONATING` | `n` (FLOAT64) | Whether the engine is detonating (TRUE, 1) or not (FALSE, 0). |
| <a id="RECIP_ENG_ENGINE_MASTER_SWITCH"></a>`RECIP_ENG_ENGINE_MASTER_SWITCH` | `b` (BOOL) | Whether the engine master switch is active (TRUE, 1) or not (FALSE, 0). |
| <a id="RECIP_ENG_GLOW_PLUG_ACTIVE"></a>`RECIP_ENG_GLOW_PLUG_ACTIVE` | `b` (BOOL) | Whether the glow plug is active (TRUE, 1) or not (FALSE, 0). |
| <a id="RECIP_ENG_NITROUS_TANK_MAX_QUANTITY"></a>`RECIP_ENG_NITROUS_TANK_MAX_QUANTITY` | `n` (FLOAT64) | The engine nitrous tank maximum quantity, in {{< glossterm >}}gallons{{< /glossterm >}}. |
| <a id="RECIP_ENG_NITROUS_TANK_QUANTITY"></a>`RECIP_ENG_NITROUS_TANK_QUANTITY` | `n` (FLOAT64) | The engine nitrous tank quantity, in {{< glossterm >}}gallons{{< /glossterm >}}. |
| <a id="RECIP_ENG_NITROUS_TANK_VALVE"></a>`RECIP_ENG_NITROUS_TANK_VALVE` | `n` (FLOAT64) | Whether the nitrous tank valve is open (TRUE, 1) or not (FALSE, 0). |
| <a id="RECIP_ENG_NUM_CYLINDERS"></a>`RECIP_ENG_NUM_CYLINDERS` | `n` (FLOAT64) | The number of cylinders in the engine. |
| <a id="RECIP_ENG_NUM_CYLINDERS_FAILED"></a>`RECIP_ENG_NUM_CYLINDERS_FAILED` | `b` (BOOL) | The number of cylinders that have failed in the engine. |
| <a id="RECIP_ENGINE1_ALTERNATE_AIR_POS"></a>`RECIP_ENGINE1_ALTERNATE_AIR_POS`<span></span><a id="RECIP_ENGINE2_ALTERNATE_AIR_POS"></a>`RECIP_ENGINE2_ALTERNATE_AIR_POS`<span></span><a id="RECIP_ENGINE3_ALTERNATE_AIR_POS"></a>`RECIP_ENGINE3_ALTERNATE_AIR_POS`<span></span><a id="RECIP_ENGINE4_ALTERNATE_AIR_POS"></a>`RECIP_ENGINE4_ALTERNATE_AIR_POS` | `n` (FLOAT64) | The alternate air control setting for engine 1/2/3/4, either 0 (closed) or 1 (off). |
| <a id="RECIP_ENGINE1_BRAKE_POWER"></a>`RECIP_ENGINE1_BRAKE_POWER`<span></span><a id="RECIP_ENGINE2_BRAKE_POWER"></a>`RECIP_ENGINE2_BRAKE_POWER`<span></span><a id="RECIP_ENGINE3_BRAKE_POWER"></a>`RECIP_ENGINE3_BRAKE_POWER`<span></span><a id="RECIP_ENGINE4_BRAKE_POWER"></a>`RECIP_ENGINE4_BRAKE_POWER` | `n` (FLOAT64) | The brake power delivered to the the shaft by engine 1/2/3/4, as {{< glossterm >}}ft{{< /glossterm >}}-{{< glossterm >}}lbs{{< /glossterm >}} / second. |
| <a id="RECIP_ENGINE1_CARB_HEAT_POS"></a>`RECIP_ENGINE1_CARB_HEAT_POS`<span></span><a id="RECIP_ENGINE2_CARB_HEAT_POS"></a>`RECIP_ENGINE2_CARB_HEAT_POS`<span></span><a id="RECIP_ENGINE3_CARB_HEAT_POS"></a>`RECIP_ENGINE3_CARB_HEAT_POS`<span></span><a id="RECIP_ENGINE4_CARB_HEAT_POS"></a>`RECIP_ENGINE4_CARB_HEAT_POS` | `n` (FLOAT64) | The carburetor heat switch setting for engine 1/2/3/4, either 0 (off) or 1 (off). |
| <a id="RECIP_ENGINE1_CHT_DEGR"></a>`RECIP_ENGINE1_CHT_DEGR`<span></span><a id="RECIP_ENGINE2_CHT_DEGR"></a>`RECIP_ENGINE2_CHT_DEGR`<span></span><a id="RECIP_ENGINE3_CHT_DEGR"></a>`RECIP_ENGINE3_CHT_DEGR`<span></span><a id="RECIP_ENGINE4_CHT_DEGR"></a>`RECIP_ENGINE4_CHT_DEGR` | `n` (FLOAT64) | The cylinder head temprature for engines 1/2/3/4, in degrees Rankine. |
| <a id="RECIP_ENGINE1_COMBUSTION"></a>`RECIP_ENGINE1_COMBUSTION`<span></span><a id="RECIP_ENGINE2_COMBUSTION"></a>`RECIP_ENGINE2_COMBUSTION`<span></span><a id="RECIP_ENGINE3_COMBUSTION"></a>`RECIP_ENGINE3_COMBUSTION`<span></span><a id="RECIP_ENGINE4_COMBUSTION"></a>`RECIP_ENGINE4_COMBUSTION` | `n` (FLOAT64) | Whether the engine 1/2/3/4 combustion is active (TRUE, 1) or not (FALSE, 0). |
| <a id="RECIP_ENGINE1_COMBUSTION_SOUND_PCT"></a>`RECIP_ENGINE1_COMBUSTION_SOUND_PCT`<span></span><a id="RECIP_ENGINE2_COMBUSTION_SOUND_PCT"></a>`RECIP_ENGINE2_COMBUSTION_SOUND_PCT`<span></span><a id="RECIP_ENGINE3_COMBUSTION_SOUND_PCT"></a>`RECIP_ENGINE3_COMBUSTION_SOUND_PCT`<span></span><a id="RECIP_ENGINE4_COMBUSTION_SOUND_PCT"></a>`RECIP_ENGINE4_COMBUSTION_SOUND_PCT` | `n` (FLOAT64) | The engine sound volume, expressed as a {{< glossterm >}}percent_over_100{{< /glossterm >}}. |
| <a id="RECIP_ENGINE1_COOLANT_RESERVOIR_PCT"></a>`RECIP_ENGINE1_COOLANT_RESERVOIR_PCT`<span></span><a id="RECIP_ENGINE2_COOLANT_RESERVOIR_PCT"></a>`RECIP_ENGINE2_COOLANT_RESERVOIR_PCT`<span></span><a id="RECIP_ENGINE3_COOLANT_RESERVOIR_PCT"></a>`RECIP_ENGINE3_COOLANT_RESERVOIR_PCT`<span></span><a id="RECIP_ENGINE4_COOLANT_RESERVOIR_PCT"></a>`RECIP_ENGINE4_COOLANT_RESERVOIR_PCT` | `n` (FLOAT64) | The percent of coolent available for engine 1/2/3/4, as a {{< glossterm >}}percent_over_100{{< /glossterm >}}. |
| <a id="RECIP_ENGINE1_COWL_FLAP_POS"></a>`RECIP_ENGINE1_COWL_FLAP_POS`<span></span><a id="RECIP_ENGINE2_COWL_FLAP_POS"></a>`RECIP_ENGINE2_COWL_FLAP_POS`<span></span><a id="RECIP_ENGINE3_COWL_FLAP_POS"></a>`RECIP_ENGINE3_COWL_FLAP_POS`<span></span><a id="RECIP_ENGINE4_COWL_FLAP_POS"></a>`RECIP_ENGINE4_COWL_FLAP_POS` | `n` (FLOAT64) | The percent of cowl flap open for engine 1/2/3/4, as a {{< glossterm >}}percent_over_100{{< /glossterm >}}. |
| <a id="RECIP_ENGINE1_DAMAGE_PERCENT"></a>`RECIP_ENGINE1_DAMAGE_PERCENT`<span></span><a id="RECIP_ENGINE2_DAMAGE_PERCENT"></a>`RECIP_ENGINE2_DAMAGE_PERCENT`<span></span><a id="RECIP_ENGINE3_DAMAGE_PERCENT"></a>`RECIP_ENGINE3_DAMAGE_PERCENT`<span></span><a id="RECIP_ENGINE4_DAMAGE_PERCENT"></a>`RECIP_ENGINE4_DAMAGE_PERCENT` | `n` (FLOAT64) | The percent of total damage for engine 1/2/3/4, as a {{< glossterm >}}percent_over_100{{< /glossterm >}}. |
| <a id="RECIP_ENGINE1_EGT_DEGR"></a>`RECIP_ENGINE1_EGT_DEGR`<span></span><a id="RECIP_ENGINE2_EGT_DEGR"></a>`RECIP_ENGINE2_EGT_DEGR`<span></span><a id="RECIP_ENGINE3_EGT_DEGR"></a>`RECIP_ENGINE3_EGT_DEGR`<span></span><a id="RECIP_ENGINE4_EGT_DEGR"></a>`RECIP_ENGINE4_EGT_DEGR` | `n` (FLOAT64) | The engine 1/2/3/4 {{< glossterm >}}egt{{< /glossterm >}}, in degrees Rankine. |
| <a id="RECIP_ENGINE1_EMERGENCY_BOOST_ACTIVE"></a>`RECIP_ENGINE1_EMERGENCY_BOOST_ACTIVE`<span></span><a id="RECIP_ENGINE2_EMERGENCY_BOOST_ACTIVE"></a>`RECIP_ENGINE2_EMERGENCY_BOOST_ACTIVE`<span></span><a id="RECIP_ENGINE3_EMERGENCY_BOOST_ACTIVE"></a>`RECIP_ENGINE3_EMERGENCY_BOOST_ACTIVE`<span></span><a id="RECIP_ENGINE4_EMERGENCY_BOOST_ACTIVE"></a>`RECIP_ENGINE4_EMERGENCY_BOOST_ACTIVE` | `b` (BOOL) | Whether the engine 1/2/3/4 emergency boost is active (TRUE, 1) or not (FALSE, 0). |
| <a id="RECIP_ENGINE1_EMERGENCY_BOOST_ELAPSED_TIME"></a>`RECIP_ENGINE1_EMERGENCY_BOOST_ELAPSED_TIME`<span></span><a id="RECIP_ENGINE2_EMERGENCY_BOOST_ELAPSED_TIME"></a>`RECIP_ENGINE2_EMERGENCY_BOOST_ELAPSED_TIME`<span></span><a id="RECIP_ENGINE3_EMERGENCY_BOOST_ELAPSED_TIME"></a>`RECIP_ENGINE3_EMERGENCY_BOOST_ELAPSED_TIME`<span></span><a id="RECIP_ENGINE4_EMERGENCY_BOOST_ELAPSED_TIME"></a>`RECIP_ENGINE4_EMERGENCY_BOOST_ELAPSED_TIME` | `n` (FLOAT64) | How long emergency boost has been active for engines 1/2/3/4, in seconds. |
| <a id="RECIP_ENGINE1_ENGINE_RPM"></a>`RECIP_ENGINE1_ENGINE_RPM`<span></span><a id="RECIP_ENGINE2_ENGINE_RPM"></a>`RECIP_ENGINE2_ENGINE_RPM`<span></span><a id="RECIP_ENGINE3_ENGINE_RPM"></a>`RECIP_ENGINE3_ENGINE_RPM`<span></span><a id="RECIP_ENGINE4_ENGINE_RPM"></a>`RECIP_ENGINE4_ENGINE_RPM` | `n` (FLOAT64) | Engine 1/2/3/4 {{< glossterm >}}rpm{{< /glossterm >}}. |
| <a id="RECIP_ENGINE1_FUEL_AVAILABLE"></a>`RECIP_ENGINE1_FUEL_AVAILABLE`<span></span><a id="RECIP_ENGINE2_FUEL_AVAILABLE"></a>`RECIP_ENGINE2_FUEL_AVAILABLE`<span></span><a id="RECIP_ENGINE3_FUEL_AVAILABLE"></a>`RECIP_ENGINE3_FUEL_AVAILABLE`<span></span><a id="RECIP_ENGINE4_FUEL_AVAILABLE"></a>`RECIP_ENGINE4_FUEL_AVAILABLE` | `b` (BOOL) | Whether engine 1/2/3/4 has fuel available (TRUE, 1) or not (FALSE, 0). |
| <a id="RECIP_ENGINE1_FUEL_PRESSURE_PSF"></a>`RECIP_ENGINE1_FUEL_PRESSURE_PSF`<span></span><a id="RECIP_ENGINE2_FUEL_PRESSURE_PSF"></a>`RECIP_ENGINE2_FUEL_PRESSURE_PSF`<span></span><a id="RECIP_ENGINE3_FUEL_PRESSURE_PSF"></a>`RECIP_ENGINE3_FUEL_PRESSURE_PSF`<span></span><a id="RECIP_ENGINE4_FUEL_PRESSURE_PSF"></a>`RECIP_ENGINE4_FUEL_PRESSURE_PSF` | `n` (FLOAT64) | Engine 1/2/3/4 fuel pressure, in {{< glossterm >}}lbs{{< /glossterm >}}/{{< glossterm >}}sqft{{< /glossterm >}}. |
| <a id="RECIP_ENGINE1_FUELFLOW_PPH"></a>`RECIP_ENGINE1_FUELFLOW_PPH`<span></span><a id="RECIP_ENGINE2_FUELFLOW_PPH"></a>`RECIP_ENGINE2_FUELFLOW_PPH`<span></span><a id="RECIP_ENGINE3_FUELFLOW_PPH"></a>`RECIP_ENGINE3_FUELFLOW_PPH`<span></span><a id="RECIP_ENGINE4_FUELFLOW_PPH"></a>`RECIP_ENGINE4_FUELFLOW_PPH` | `n` (FLOAT64) | Engine 1/2/3/4 fuel flow, in {{< glossterm >}}lbs{{< /glossterm >}}/hr. |
| <a id="RECIP_ENGINE1_INDUCED_VELOCITY"></a>`RECIP_ENGINE1_INDUCED_VELOCITY`<span></span><a id="RECIP_ENGINE2_INDUCED_VELOCITY"></a>`RECIP_ENGINE2_INDUCED_VELOCITY`<span></span><a id="RECIP_ENGINE3_INDUCED_VELOCITY"></a>`RECIP_ENGINE3_INDUCED_VELOCITY`<span></span><a id="RECIP_ENGINE4_INDUCED_VELOCITY"></a>`RECIP_ENGINE4_INDUCED_VELOCITY` | `n` (FLOAT64) | Engine 1/2/3/4 velocity induced by prop. ***Currently not used in the simulation.*** |
| <a id="RECIP_ENGINE1_LEFT_MAG"></a>`RECIP_ENGINE1_LEFT_MAG`<span></span><a id="RECIP_ENGINE2_LEFT_MAG"></a>`RECIP_ENGINE2_LEFT_MAG`<span></span><a id="RECIP_ENGINE3_LEFT_MAG"></a>`RECIP_ENGINE3_LEFT_MAG`<span></span><a id="RECIP_ENGINE4_LEFT_MAG"></a>`RECIP_ENGINE4_LEFT_MAG` | `b` (BOOL) | The left magneto status for enginer 1/2/3/4, either on (TRUE, 1) or off (FALSE, 0). |
| <a id="RECIP_ENGINE1_MANIFOLD_PRESSURE"></a>`RECIP_ENGINE1_MANIFOLD_PRESSURE`<span></span><a id="RECIP_ENGINE2_MANIFOLD_PRESSURE"></a>`RECIP_ENGINE2_MANIFOLD_PRESSURE`<span></span><a id="RECIP_ENGINE3_MANIFOLD_PRESSURE"></a>`RECIP_ENGINE3_MANIFOLD_PRESSURE`<span></span><a id="RECIP_ENGINE4_MANIFOLD_PRESSURE"></a>`RECIP_ENGINE4_MANIFOLD_PRESSURE` | `n` (FLOAT64) | The engine 1/2/3/4 manifild pressure in {{< glossterm >}}lbs{{< /glossterm >}} per {{< glossterm >}}sqft{{< /glossterm >}}. |
| <a id="RECIP_ENGINE1_MIXTURE_LEVER_POS"></a>`RECIP_ENGINE1_MIXTURE_LEVER_POS`<span></span><a id="RECIP_ENGINE2_MIXTURE_LEVER_POS"></a>`RECIP_ENGINE2_MIXTURE_LEVER_POS`<span></span><a id="RECIP_ENGINE3_MIXTURE_LEVER_POS"></a>`RECIP_ENGINE3_MIXTURE_LEVER_POS`<span></span><a id="RECIP_ENGINE4_MIXTURE_LEVER_POS"></a>`RECIP_ENGINE4_MIXTURE_LEVER_POS` | `n` (FLOAT64) | The mixture lever position for engines 1/2/3/4 expressed as a {{< glossterm >}}percent_over_100{{< /glossterm >}}. |
| <a id="RECIP_ENGINE1_NUMBER_OF_TANKS_USED"></a>`RECIP_ENGINE1_NUMBER_OF_TANKS_USED`<span></span><a id="RECIP_ENGINE2_NUMBER_OF_TANKS_USED"></a>`RECIP_ENGINE2_NUMBER_OF_TANKS_USED`<span></span><a id="RECIP_ENGINE3_NUMBER_OF_TANKS_USED"></a>`RECIP_ENGINE3_NUMBER_OF_TANKS_USED`<span></span><a id="RECIP_ENGINE4_NUMBER_OF_TANKS_USED"></a>`RECIP_ENGINE4_NUMBER_OF_TANKS_USED` | `n` (FLOAT64) | The number of fuel tanks being used by engine 1/2/3/4. |
| <a id="RECIP_ENGINE1_OIL_LEAK_PCT"></a>`RECIP_ENGINE1_OIL_LEAK_PCT`<span></span><a id="RECIP_ENGINE2_OIL_LEAK_PCT"></a>`RECIP_ENGINE2_OIL_LEAK_PCT`<span></span><a id="RECIP_ENGINE3_OIL_LEAK_PCT"></a>`RECIP_ENGINE3_OIL_LEAK_PCT`<span></span><a id="RECIP_ENGINE4_OIL_LEAK_PCT"></a>`RECIP_ENGINE4_OIL_LEAK_PCT` | `n` (FLOAT64) | The percentage of oil leaked by engine 1/2/3/4 (from maximum oil capacity) expressed as a {{< glossterm >}}percent_over_100{{< /glossterm >}}. |
| <a id="RECIP_ENGINE1_OIL_PRESS_PSF"></a>`RECIP_ENGINE1_OIL_PRESS_PSF`<span></span><a id="RECIP_ENGINE2_OIL_PRESS_PSF"></a>`RECIP_ENGINE2_OIL_PRESS_PSF`<span></span><a id="RECIP_ENGINE3_OIL_PRESS_PSF"></a>`RECIP_ENGINE3_OIL_PRESS_PSF`<span></span><a id="RECIP_ENGINE4_OIL_PRESS_PSF"></a>`RECIP_ENGINE4_OIL_PRESS_PSF` | `n` (FLOAT64) | The oil pressure for engine 12/3/4 in {{< glossterm >}}lbs{{< /glossterm >}} per {{< glossterm >}}sqft{{< /glossterm >}}. |
| <a id="RECIP_ENGINE1_OIL_TEMP_DEGR"></a>`RECIP_ENGINE1_OIL_TEMP_DEGR`<span></span><a id="RECIP_ENGINE2_OIL_TEMP_DEGR"></a>`RECIP_ENGINE2_OIL_TEMP_DEGR`<span></span><a id="RECIP_ENGINE3_OIL_TEMP_DEGR"></a>`RECIP_ENGINE3_OIL_TEMP_DEGR`<span></span><a id="RECIP_ENGINE4_OIL_TEMP_DEGR"></a>`RECIP_ENGINE4_OIL_TEMP_DEGR` | `n` (FLOAT64) | The engine oil temperature in degrees {{< glossterm >}}rankine{{< /glossterm >}}. |
| <a id="RECIP_ENGINE1_PROP_BETA"></a>`RECIP_ENGINE1_PROP_BETA`<span></span><a id="RECIP_ENGINE2_PROP_BETA"></a>`RECIP_ENGINE2_PROP_BETA`<span></span><a id="RECIP_ENGINE3_PROP_BETA"></a>`RECIP_ENGINE3_PROP_BETA`<span></span><a id="RECIP_ENGINE4_PROP_BETA"></a>`RECIP_ENGINE4_PROP_BETA` | `n` (FLOAT64) | The propeller blade angle for engine 1/2/3/4 relative to the plane of rotation in degrees. |
| <a id="RECIP_ENGINE1_PROP_LEVER_POS"></a>`RECIP_ENGINE1_PROP_LEVER_POS`<span></span><a id="RECIP_ENGINE2_PROP_LEVER_POS"></a>`RECIP_ENGINE2_PROP_LEVER_POS`<span></span><a id="RECIP_ENGINE3_PROP_LEVER_POS"></a>`RECIP_ENGINE3_PROP_LEVER_POS`<span></span><a id="RECIP_ENGINE4_PROP_LEVER_POS"></a>`RECIP_ENGINE4_PROP_LEVER_POS` | `n` (FLOAT64) | The propeller lever position for engine 1/2/3/4 expressed as a {{< glossterm >}}percent_over_100{{< /glossterm >}}. |
| <a id="RECIP_ENGINE1_PROP_TORQUE"></a>`RECIP_ENGINE1_PROP_TORQUE`<span></span><a id="RECIP_ENGINE2_PROP_TORQUE"></a>`RECIP_ENGINE2_PROP_TORQUE`<span></span><a id="RECIP_ENGINE3_PROP_TORQUE"></a>`RECIP_ENGINE3_PROP_TORQUE`<span></span><a id="RECIP_ENGINE4_PROP_TORQUE"></a>`RECIP_ENGINE4_PROP_TORQUE` | `n` (FLOAT64) | The torque required by the propeller on engine 1/2/3/4 in {{< glossterm >}}ftlbs{{< /glossterm >}}. |
| <a id="RECIP_ENGINE1_RADIATOR_DEGR"></a>`RECIP_ENGINE1_RADIATOR_DEGR`<span></span><a id="RECIP_ENGINE2_RADIATOR_DEGR"></a>`RECIP_ENGINE2_RADIATOR_DEGR`<span></span><a id="RECIP_ENGINE3_RADIATOR_DEGR"></a>`RECIP_ENGINE3_RADIATOR_DEGR`<span></span><a id="RECIP_ENGINE4_RADIATOR_DEGR"></a>`RECIP_ENGINE4_RADIATOR_DEGR` | `n` (FLOAT64) | The engine 1/2/3/4 radiator temperature in degrees {{< glossterm >}}rankine{{< /glossterm >}}. |
| <a id="RECIP_ENGINE1_RIGHT_MAG"></a>`RECIP_ENGINE1_RIGHT_MAG`<span></span><a id="RECIP_ENGINE2_RIGHT_MAG"></a>`RECIP_ENGINE2_RIGHT_MAG`<span></span><a id="RECIP_ENGINE3_RIGHT_MAG"></a>`RECIP_ENGINE3_RIGHT_MAG`<span></span><a id="RECIP_ENGINE4_RIGHT_MAG"></a>`RECIP_ENGINE4_RIGHT_MAG` | `b` (BOOL) | The right magneto status for engine 1/2/3/4, either on (TRUE, 1) or off (FALSE, 0). |
| <a id="RECIP_ENGINE1_SHAFT_TORQUE"></a>`RECIP_ENGINE1_SHAFT_TORQUE`<span></span><a id="RECIP_ENGINE2_SHAFT_TORQUE"></a>`RECIP_ENGINE2_SHAFT_TORQUE`<span></span><a id="RECIP_ENGINE3_SHAFT_TORQUE"></a>`RECIP_ENGINE3_SHAFT_TORQUE`<span></span><a id="RECIP_ENGINE4_SHAFT_TORQUE"></a>`RECIP_ENGINE4_SHAFT_TORQUE` | `n` (FLOAT64) | The torque delivered to the shaft by engine 1/2/3/4 in {{< glossterm >}}ftlbs{{< /glossterm >}}. |
| <a id="RECIP_ENGINE1_STARTER"></a>`RECIP_ENGINE1_STARTER`<span></span><a id="RECIP_ENGINE2_STARTER"></a>`RECIP_ENGINE2_STARTER`<span></span><a id="RECIP_ENGINE3_STARTER"></a>`RECIP_ENGINE3_STARTER`<span></span><a id="RECIP_ENGINE4_STARTER"></a>`RECIP_ENGINE4_STARTER` | `b` (BOOL) | Whether the engine 1/2/3/4 starter is on (TRUE, 1) or off (FALSE, 0). |
| <a id="RECIP_ENGINE1_STARTER_TORQUE"></a>`RECIP_ENGINE1_STARTER_TORQUE`<span></span><a id="RECIP_ENGINE2_STARTER_TORQUE"></a>`RECIP_ENGINE2_STARTER_TORQUE`<span></span><a id="RECIP_ENGINE3_STARTER_TORQUE"></a>`RECIP_ENGINE3_STARTER_TORQUE`<span></span><a id="RECIP_ENGINE4_STARTER_TORQUE"></a>`RECIP_ENGINE4_STARTER_TORQUE` | `n` (FLOAT64) | The torque applied by the starter for engine 1/2/3/4 in {{< glossterm >}}psf{{< /glossterm >}}. |
| <a id="RECIP_ENGINE1_TANK_SELECTOR"></a>`RECIP_ENGINE1_TANK_SELECTOR`<span></span><a id="RECIP_ENGINE2_TANK_SELECTOR"></a>`RECIP_ENGINE2_TANK_SELECTOR`<span></span><a id="RECIP_ENGINE3_TANK_SELECTOR"></a>`RECIP_ENGINE3_TANK_SELECTOR`<span></span><a id="RECIP_ENGINE4_TANK_SELECTOR"></a>`RECIP_ENGINE4_TANK_SELECTOR` | `e` (ENUM) | The fuel tank selector position. See [Fuel Selector Codes](../../../Key_Events/Aircraft_Fuel_System_Events/#fuel-selector-codes) values. |
| <a id="RECIP_ENGINE1_TANKS_USED"></a>`RECIP_ENGINE1_TANKS_USED`<span></span><a id="RECIP_ENGINE2_TANKS_USED"></a>`RECIP_ENGINE2_TANKS_USED`<span></span><a id="RECIP_ENGINE3_TANKS_USED"></a>`RECIP_ENGINE3_TANKS_USED`<span></span><a id="RECIP_ENGINE4_TANKS_USED"></a>`RECIP_ENGINE4_TANKS_USED` | `f` (FLAGS) | Specifies which fuel tanks are being used by engine 1/2/3/4, using a combination of bit flags where:<span></span>{{< params/smallfont-list >}}1 = Center 1 (Bit 0)<span></span>2 = Center 2 (Bit 1)<span></span>3 = Center 3 (Bit 2)<span></span>8 = Left Main (Bit 3)<span></span>16 = Left Aux (Bit 4)<span></span>32 = Left Tip (Bit 5)<span></span>64 = Right Main (Bit 6)<span></span>128 = Right Aux (Bit 7)<span></span>256 = Right Tip (Bit 8)<span></span>512 = External 1 (Bit 9)<span></span>1024 = External 2 (Bit 10){{< /params/smallfont-list >}} |
| <a id="RECIP_ENGINE1_TIT_DEGR"></a>`RECIP_ENGINE1_TIT_DEGR`<span></span><a id="RECIP_ENGINE2_TIT_DEGR"></a>`RECIP_ENGINE2_TIT_DEGR`<span></span><a id="RECIP_ENGINE3_TIT_DEGR"></a>`RECIP_ENGINE3_TIT_DEGR`<span></span><a id="RECIP_ENGINE4_TIT_DEGR"></a>`RECIP_ENGINE4_TIT_DEGR` | `n` (FLOAT64) | The engine 1/2/3/4 turbine inlet temperature, in degrees {{< glossterm >}}rankine{{< /glossterm >}}. |
| <a id="RECIP_ENGINE1_THROTTLE_LEVER_POS"></a>`RECIP_ENGINE1_THROTTLE_LEVER_POS`<span></span><a id="RECIP_ENGINE2_THROTTLE_LEVER_POS"></a>`RECIP_ENGINE2_THROTTLE_LEVER_POS`<span></span><a id="RECIP_ENGINE3_THROTTLE_LEVER_POS"></a>`RECIP_ENGINE3_THROTTLE_LEVER_POS`<span></span><a id="RECIP_ENGINE4_THROTTLE_LEVER_POS"></a>`RECIP_ENGINE4_THROTTLE_LEVER_POS` | `n` (FLOAT64) | The throttle lever position for engine 1/2/3/4 expressed as a {{< glossterm >}}percent_over_100{{< /glossterm >}}. |
| <a id="RECIP_ENGINE1_THRUST"></a>`RECIP_ENGINE1_THRUST`<span></span><a id="RECIP_ENGINE2_THRUST"></a>`RECIP_ENGINE2_THRUST`<span></span><a id="RECIP_ENGINE3_THRUST"></a>`RECIP_ENGINE3_THRUST`<span></span><a id="RECIP_ENGINE4_THRUST"></a>`RECIP_ENGINE4_THRUST` | `n` (FLOAT64) | The thrust from engine 1/2/3/4 in {{< glossterm >}}lbs{{< /glossterm >}}. |
| <a id="RECIP_ENGINE1_TURBOCHARGER_FAILED"></a>`RECIP_ENGINE1_TURBOCHARGER_FAILED`<span></span><a id="RECIP_ENGINE2_TURBOCHARGER_FAILED"></a>`RECIP_ENGINE2_TURBOCHARGER_FAILED`<span></span><a id="RECIP_ENGINE3_TURBOCHARGER_FAILED"></a>`RECIP_ENGINE3_TURBOCHARGER_FAILED`<span></span><a id="RECIP_ENGINE4_TURBOCHARGER_FAILED"></a>`RECIP_ENGINE4_TURBOCHARGER_FAILED` | `b` (BOOL) | The turbocharger failed state for the engine 1/2/3/4, either failed (TRUE, 1) or not (FALSE, 0). |
| <a id="RECIP_ENGINE1_WASTEGATE_POS"></a>`RECIP_ENGINE1_WASTEGATE_POS`<span></span><a id="RECIP_ENGINE2_WASTEGATE_POS"></a>`RECIP_ENGINE2_WASTEGATE_POS`<span></span><a id="RECIP_ENGINE3_WASTEGATE_POS"></a>`RECIP_ENGINE3_WASTEGATE_POS`<span></span><a id="RECIP_ENGINE4_WASTEGATE_POS"></a>`RECIP_ENGINE4_WASTEGATE_POS` | `n` (FLOAT64) | The position of the wastegate controller for engine 1/2/3/4, where 1 is fully closed (full boost) and 0 is fully open (no boost). |

{{< /table-wrapper >}}


### Turbine Engines

{{< table-wrapper >}}

| Parameters | Universal Var Member | Description |
|---|---|---|
| <a id="TURB_ENG_AFTERBURNER_PCT_ACTIVE"></a>`TURB_ENG_AFTERBURNER_PCT_ACTIVE` | `n` (FLOAT64) | The percentage of afterburner active, expressed as a {{< glossterm >}}percent_over_100{{< /glossterm >}}. |
| <a id="TURB_ENG_AFTERBURNER_STAGE_ACTIVE"></a>`TURB_ENG_AFTERBURNER_STAGE_ACTIVE` | `n` (FLOAT64) | The afterburner stage, where 0 is not active. |
| <a id="TURB_ENG_IGNITION_SWITCH_EX1"></a>`TURB_ENG_IGNITION_SWITCH_EX1` | `e` (ENUM)<span></span>{{< params/smallfont-list >}}0 = Off<span></span>1 = On<span></span>2 = Auto{{< /params/smallfont-list >}} | The position of the turbine engine ignition switch. |
| <a id="TURB_ENG_IS_IGNITING"></a>`TURB_ENG_IS_IGNITING` | `b` (BOOL) | Wheter the ignition system is currently running (TRUE, 1) or not (FALSE, 0). This will depend on `TURB_ENG_IGNITION_SWITCH_EX1`, the CFG parameter ` ` and the current state of the plane. |
| <a id="TURB_ENGINE_1_AFTERBURNER"></a>`TURB_ENGINE_1_AFTERBURNER`<span></span><a id="TURB_ENGINE_2_AFTERBURNER"></a>`TURB_ENGINE_2_AFTERBURNER`<span></span><a id="TURB_ENGINE_3_AFTERBURNER"></a>`TURB_ENGINE_3_AFTERBURNER`<span></span><a id="TURB_ENGINE_4_AFTERBURNER"></a>`TURB_ENGINE_4_AFTERBURNER` | `b` (BOOL) | The afterburner state for engine 1/2/3/4, either enabled (TRUE, 1) or disabled (FALSE, 0). |
| <a id="TURB_ENGINE_1_BLEEDAIRPSI"></a>`TURB_ENGINE_1_BLEEDAIRPSI`<span></span><a id="TURB_ENGINE_2_BLEEDAIRPSI"></a>`TURB_ENGINE_2_BLEEDAIRPSI`<span></span><a id="TURB_ENGINE_3_BLEEDAIRPSI"></a>`TURB_ENGINE_3_BLEEDAIRPSI`<span></span><a id="TURB_ENGINE_4_BLEEDAIRPSI"></a>`TURB_ENGINE_4_BLEEDAIRPSI` | `n` (FLOAT64) | The bleed air pressure for engine 1/2/3/4 in {{< glossterm >}}psi{{< /glossterm >}}. |
| <a id="TURB_ENGINE_1_COMMANDED_N1"></a>`TURB_ENGINE_1_COMMANDED_N1`<span></span><a id="TURB_ENGINE_2_COMMANDED_N1"></a>`TURB_ENGINE_2_COMMANDED_N1`<span></span><a id="TURB_ENGINE_3_COMMANDED_N1"></a>`TURB_ENGINE_3_COMMANDED_N1`<span></span><a id="TURB_ENGINE_4_COMMANDED_N1"></a>`TURB_ENGINE_4_COMMANDED_N1` | `n` (FLOAT64) | The turbine engine 1/2/3/4 effective commanded {{< glossterm >}}N1{{< /glossterm >}}, as a percentage. |
| <a id="TURB_ENGINE_1_CORRECTED_FF"></a>`TURB_ENGINE_1_CORRECTED_FF`<span></span><a id="TURB_ENGINE_2_CORRECTED_FF"></a>`TURB_ENGINE_2_CORRECTED_FF`<span></span><a id="TURB_ENGINE_3_CORRECTED_FF"></a>`TURB_ENGINE_3_CORRECTED_FF`<span></span><a id="TURB_ENGINE_4_CORRECTED_FF"></a>`TURB_ENGINE_4_CORRECTED_FF` | `n` (FLOAT64) | The corrected fuel flow for engine 1/2/3/4, in {{< glossterm >}}lbs{{< /glossterm >}} per hour. |
| <a id="TURB_ENGINE_1_CORRECTED_N1"></a>`TURB_ENGINE_1_CORRECTED_N1`<span></span><a id="TURB_ENGINE_2_CORRECTED_N1"></a>`TURB_ENGINE_2_CORRECTED_N1`<span></span><a id="TURB_ENGINE_3_CORRECTED_N1"></a>`TURB_ENGINE_3_CORRECTED_N1`<span></span><a id="TURB_ENGINE_4_CORRECTED_N1"></a>`TURB_ENGINE_4_CORRECTED_N1` | `n` (FLOAT64) | The turbine engine 1/2/3/4 corrected {{< glossterm >}}N1{{< /glossterm >}}, as a percentage. |
| <a id="TURB_ENGINE_1_CORRECTED_N2"></a>`TURB_ENGINE_1_CORRECTED_N2`<span></span><a id="TURB_ENGINE_2_CORRECTED_N2"></a>`TURB_ENGINE_2_CORRECTED_N2`<span></span><a id="TURB_ENGINE_3_CORRECTED_N2"></a>`TURB_ENGINE_3_CORRECTED_N2`<span></span><a id="TURB_ENGINE_4_CORRECTED_N2"></a>`TURB_ENGINE_4_CORRECTED_N2` | `n` (FLOAT64) | The turbine engine 1/2/3/4 corrected {{< glossterm >}}N2{{< /glossterm >}}, as a percentage. |
| <a id="TURB_ENGINE_1_EPR"></a>`TURB_ENGINE_1_EPR`<span></span><a id="TURB_ENGINE_2_EPR"></a>`TURB_ENGINE_2_EPR`<span></span><a id="TURB_ENGINE_3_EPR"></a>`TURB_ENGINE_3_EPR`<span></span><a id="TURB_ENGINE_4_EPR"></a>`TURB_ENGINE_4_EPR` | `n` (FLOAT64) | The engine 1/2/3/4 pressure ratio. |
| <a id="TURB_ENGINE_1_FREE_TURBINE_TORQUE"></a>`TURB_ENGINE_1_FREE_TURBINE_TORQUE`<span></span><a id="TURB_ENGINE_2_FREE_TURBINE_TORQUE"></a>`TURB_ENGINE_2_FREE_TURBINE_TORQUE`<span></span><a id="TURB_ENGINE_3_FREE_TURBINE_TORQUE"></a>`TURB_ENGINE_3_FREE_TURBINE_TORQUE`<span></span><a id="TURB_ENGINE_4_FREE_TURBINE_TORQUE"></a>`TURB_ENGINE_4_FREE_TURBINE_TORQUE` | `n` (FLOAT64) | The free turbine torque for engine 1/2/3/4, expressed as {{< glossterm >}}ftlbs{{< /glossterm >}}. |
| <a id="TURB_ENGINE_1_FUEL_AVAILABLE"></a>`TURB_ENGINE_1_FUEL_AVAILABLE`<span></span><a id="TURB_ENGINE_2_FUEL_AVAILABLE"></a>`TURB_ENGINE_2_FUEL_AVAILABLE`<span></span><a id="TURB_ENGINE_3_FUEL_AVAILABLE"></a>`TURB_ENGINE_3_FUEL_AVAILABLE`<span></span><a id="TURB_ENGINE_4_FUEL_AVAILABLE"></a>`TURB_ENGINE_4_FUEL_AVAILABLE` | `b` (BOOL) | Whether fuel is available (TRUE, 1) or not (FALSE, 0) for engine 1/2/3/4. |
| <a id="TURB_ENGINE_1_FUELFLOW_PPH"></a>`TURB_ENGINE_1_FUELFLOW_PPH`<span></span><a id="TURB_ENGINE_2_FUELFLOW_PPH"></a>`TURB_ENGINE_2_FUELFLOW_PPH`<span></span><a id="TURB_ENGINE_3_FUELFLOW_PPH"></a>`TURB_ENGINE_3_FUELFLOW_PPH`<span></span><a id="TURB_ENGINE_4_FUELFLOW_PPH"></a>`TURB_ENGINE_4_FUELFLOW_PPH` | `n` (FLOAT64) | The fuel flow for engine 1/2/3/4, expressed in {{< glossterm >}}lbs{{< /glossterm >}} per hour. |
| <a id="TURB_ENGINE_1_ITT"></a>`TURB_ENGINE_1_ITT`<span></span><a id="TURB_ENGINE_2_ITT"></a>`TURB_ENGINE_2_ITT`<span></span><a id="TURB_ENGINE_3_ITT"></a>`TURB_ENGINE_3_ITT`<span></span><a id="TURB_ENGINE_4_ITT"></a>`TURB_ENGINE_4_ITT` | `n` (FLOAT64) | The engine 1/2/3/4 {{< glossterm >}}ITT{{< /glossterm >}} in degrees {{< glossterm >}}rankine{{< /glossterm >}}. |
| <a id="TURB_ENGINE_1_JET_THRUST"></a>`TURB_ENGINE_1_JET_THRUST`<span></span><a id="TURB_ENGINE_2_JET_THRUST"></a>`TURB_ENGINE_2_JET_THRUST`<span></span><a id="TURB_ENGINE_3_JET_THRUST"></a>`TURB_ENGINE_3_JET_THRUST`<span></span><a id="TURB_ENGINE_4_JET_THRUST"></a>`TURB_ENGINE_4_JET_THRUST` | `n` (FLOAT64) | The thrust for the engine 1/2/3/4 in {{< glossterm >}}lbs{{< /glossterm >}}. |
| <a id="TURB_ENGINE_1_N1"></a>`TURB_ENGINE_1_N1`<span></span><a id="TURB_ENGINE_2_N1"></a>`TURB_ENGINE_2_N1`<span></span><a id="TURB_ENGINE_3_N1"></a>`TURB_ENGINE_3_N1`<span></span><a id="TURB_ENGINE_4_N1"></a>`TURB_ENGINE_4_N1` | `n` (FLOAT64) | The turbine engine 1/2/3/4 {{< glossterm >}}N1{{< /glossterm >}} as a percentage. |
| <a id="TURB_ENGINE_1_N2"></a>`TURB_ENGINE_1_N2`<span></span><a id="TURB_ENGINE_2_N2"></a>`TURB_ENGINE_2_N2`<span></span><a id="TURB_ENGINE_3_N2"></a>`TURB_ENGINE_3_N2`<span></span><a id="TURB_ENGINE_4_N2"></a>`TURB_ENGINE_4_N2` | `n` (FLOAT64) | The turbine engine 1/2/3/4 {{< glossterm >}}N2{{< /glossterm >}} as a percentage. |
| <a id="TURB_ENGINE_1_NUMBER_TANKS"></a>`TURB_ENGINE_1_NUMBER_TANKS`<span></span><a id="TURB_ENGINE_2_NUMBER_TANKS"></a>`TURB_ENGINE_2_NUMBER_TANKS`<span></span><a id="TURB_ENGINE_3_NUMBER_TANKS"></a>`TURB_ENGINE_3_NUMBER_TANKS`<span></span><a id="TURB_ENGINE_4_NUMBER_TANKS"></a>`TURB_ENGINE_4_NUMBER_TANKS` | `n` (FLOAT64) | The number of fuel tanks currently being used by engine 1/2/3/4. |
| <a id="TURB_ENGINE_1_PCT_AREA"></a>`TURB_ENGINE_1_PCT_AREA`<span></span><a id="TURB_ENGINE_2_PCT_AREA"></a>`TURB_ENGINE_2_PCT_AREA`<span></span><a id="TURB_ENGINE_3_PCT_AREA"></a>`TURB_ENGINE_3_PCT_AREA`<span></span><a id="TURB_ENGINE_4_PCT_AREA"></a>`TURB_ENGINE_4_PCT_AREA` | `n` (FLOAT64) | The percentage thrust of the primary nozzle for engine 1/2/3/4. |
| <a id="TURB_ENGINE_1_PCT_MAX_TORQUE"></a>`TURB_ENGINE_1_PCT_MAX_TORQUE`<span></span><a id="TURB_ENGINE_2_PCT_MAX_TORQUE"></a>`TURB_ENGINE_2_PCT_MAX_TORQUE`<span></span><a id="TURB_ENGINE_3_PCT_MAX_TORQUE"></a>`TURB_ENGINE_3_PCT_MAX_TORQUE`<span></span><a id="TURB_ENGINE_4_PCT_MAX_TORQUE"></a>`TURB_ENGINE_4_PCT_MAX_TORQUE` | `n` (FLOAT64) | The maximum rated torque for the engine 1/2/3/4 expressed as a {{< glossterm >}}percent_over_100{{< /glossterm >}}. |
| <a id="TURB_ENGINE_1_PCT_REVERSER"></a>`TURB_ENGINE_1_PCT_REVERSER`<span></span><a id="TURB_ENGINE_2_PCT_REVERSER"></a>`TURB_ENGINE_2_PCT_REVERSER`<span></span><a id="TURB_ENGINE_3_PCT_REVERSER"></a>`TURB_ENGINE_3_PCT_REVERSER`<span></span><a id="TURB_ENGINE_4_PCT_REVERSER"></a>`TURB_ENGINE_4_PCT_REVERSER` | `n` (FLOAT64) | The amount that the engine 1/2/3/4 thrust reverser nozzles are deployed, expressed a {{< glossterm >}}percent_over_100{{< /glossterm >}}. |
| <a id="TURB_ENGINE_1_TANK_SELECTOR"></a>`TURB_ENGINE_1_TANK_SELECTOR`<span></span><a id="TURB_ENGINE_2_TANK_SELECTOR"></a>`TURB_ENGINE_2_TANK_SELECTOR`<span></span><a id="TURB_ENGINE_3_TANK_SELECTOR"></a>`TURB_ENGINE_3_TANK_SELECTOR`<span></span><a id="TURB_ENGINE_4_TANK_SELECTOR"></a>`TURB_ENGINE_4_TANK_SELECTOR` | `e` (ENUM) | The fuel tank selector position for engine 1/2/3/4. See [Fuel Selector Codes](../../../Key_Events/Aircraft_Fuel_System_Events/#fuel-selector-codes) values. |
| <a id="TURB_ENGINE_1_TANKS_USED"></a>`TURB_ENGINE_1_TANKS_USED`<span></span><a id="TURB_ENGINE_2_TANKS_USED"></a>`TURB_ENGINE_2_TANKS_USED`<span></span><a id="TURB_ENGINE_3_TANKS_USED"></a>`TURB_ENGINE_3_TANKS_USED`<span></span><a id="TURB_ENGINE_4_TANKS_USED"></a>`TURB_ENGINE_4_TANKS_USED` | `f` (FLAGS) | Specifies which fuel tanks are being used by turbine engine 1/2/3/4, using a combination of bit flags where:<span></span>{{< params/smallfont-list >}}1 = Center 1 (Bit 0)<span></span>2 = Center 2 (Bit 1)<span></span>3 = Center 3 (Bit 2)<span></span>8 = Left Main (Bit 3)<span></span>16 = Left Aux (Bit 4)<span></span>32 = Left Tip (Bit 5)<span></span>64 = Right Main (Bit 6)<span></span>128 = Right Aux (Bit 7)<span></span>256 = Right Tip (Bit 8)<span></span>512 = External 1 (Bit 9)<span></span>1024 = External 2 (Bit 10){{< /params/smallfont-list >}} |
| <a id="TURB_ENGINE_1_THROTTLE_COMMANDED_N1"></a>`TURB_ENGINE_1_THROTTLE_COMMANDED_N1`<span></span><a id="TURB_ENGINE_2_THROTTLE_COMMANDED_N1"></a>`TURB_ENGINE_2_THROTTLE_COMMANDED_N1`<span></span><a id="TURB_ENGINE_3_THROTTLE_COMMANDED_N1"></a>`TURB_ENGINE_3_THROTTLE_COMMANDED_N1`<span></span><a id="TURB_ENGINE_4_THROTTLE_COMMANDED_N1"></a>`TURB_ENGINE_4_THROTTLE_COMMANDED_N1` | `n` (FLOAT64) | The turbine engine 1/2/3/4 commanded {{< glossterm >}}N1{{< /glossterm >}} for the current throttle position, as a percentage. |
| <a id="TURB_ENGINE_1_VIBRATION"></a>`TURB_ENGINE_1_VIBRATION`<span></span><a id="TURB_ENGINE_2_VIBRATION"></a>`TURB_ENGINE_2_VIBRATION`<span></span><a id="TURB_ENGINE_3_VIBRATION"></a>`TURB_ENGINE_3_VIBRATION`<span></span><a id="TURB_ENGINE_4_VIBRATION"></a>`TURB_ENGINE_4_VIBRATION` | `n` (FLOAT64) | The engine 1/2/3/4 vibration value. |

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