Aircraft Fuel System Events
The event IDs listed here are all related to the fuel systems of an aircraft.
Cross Feed
| Key Name | Event ID | Parameters | Description |
|---|---|---|---|
CROSS_FEED_OPEN | KEY_CROSS_FEED_OPEN | N/A | Opens cross feed valve (when used in conjunction with “isolate” tank) |
CROSS_FEED_TOGGLE | KEY_CROSS_FEED_TOGGLE | N/A | Toggles crossfeed valve (when used in conjunction with “isolate” tank) |
CROSS_FEED_OFF | KEY_CROSS_FEED_OFF | N/A | Closes crossfeed valve (when used in conjunction with “isolate” tank) |
CROSS_FEED_LEFT_TO_RIGHT | KEY_CROSS_FEED_LEFT_TO_RIGHT | N/A | Sets the fuel crossfeed to be from left to right. |
CROSS_FEED_RIGHT_TO_LEFT | KEY_CROSS_FEED_RIGHT_TO_LEFT | N/A | Sets the fuel crossfeed to be from right to left. |
Fuel Selector
| Key Name | Event ID | Parameters | Description |
|---|---|---|---|
FUEL_SELECTOR_ALL | KEY_FUEL_SELECTOR_ALL | N/A | Turn fuel selector 1 to the ALL position. |
FUEL_SELECTOR_CENTER | KEY_FUEL_SELECTOR_CENTER | N/A | Turns selector 1 to CENTER position. |
FUEL_SELECTOR_LEFT | KEY_FUEL_SELECTOR_LEFT | N/A | Turns selector 1 to LEFT position (fuel will be retrieved from Left Tip then Left Aux then Left Main). |
FUEL_SELECTOR_LEFT_AUX | KEY_FUEL_SELECTOR_LEFT_AUX | N/A | Turns selector 1 to LEFT AUX position. |
FUEL_SELECTOR_LEFT_MAIN | KEY_FUEL_SELECTOR_LEFT_MAIN | N/A | Sets the fuel selector for engine 1 to the left Main tank. |
FUEL_SELECTOR_OFF | KEY_FUEL_SELECTOR_OFF | N/A | Turn fuel selector 1 to the OFF position. |
FUEL_SELECTOR_RIGHT | KEY_FUEL_SELECTOR_RIGHT | N/A | Turns selector 1 to RIGHT position (fuel will be retrieved from Right Tip then Right Aux then Right Main). |
FUEL_SELECTOR_RIGHT_AUX | KEY_FUEL_SELECTOR_RIGHT_AUX | N/A | Turns selector 1 to RIGHT AUX position. |
FUEL_SELECTOR_RIGHT_MAIN | KEY_FUEL_SELECTOR_RIGHT_MAIN | N/A | Sets the fuel selector for engine 1 to the right Main tank. |
FUEL_SELECTOR_SET | KEY_FUEL_SELECTOR_SET | [0]: Number | Sets selector 1 position (see the Fuel Selector Codes list for the correct code to use). |
FUEL_SELECTOR_1_ISOLATE | KEY_FUEL_SELECTOR_1_ISOLATE | N/A | Sets fuel selector 1 to “Isolate”. |
FUEL_SELECTOR_1_CROSSFEED | KEY_FUEL_SELECTOR_1_CROSSFEED | N/A | Sets fuel selector 1 to “Crossfeed”. |
FUEL_SELECTOR_2_ALL | KEY_FUEL_SELECTOR_2_ALL | N/A | Turns selector 2 to ALL position. |
FUEL_SELECTOR_2_CENTER | KEY_FUEL_SELECTOR_2_CENTER | N/A | Turns selector 2 to CENTER position. |
FUEL_SELECTOR_2_CROSSFEED | KEY_FUEL_SELECTOR_2_CROSSFEED | N/A | Sets fuel selector 2 to “Crossfeed”. |
FUEL_SELECTOR_2_ISOLATE | KEY_FUEL_SELECTOR_2_ISOLATE | N/A | Sets fuel selector 2 to “Isolate”. |
FUEL_SELECTOR_2_LEFT | KEY_FUEL_SELECTOR_2_LEFT | N/A | Turns selector 2 to LEFT position (fuel will be retrieved from Left Tip then Left Aux then Left Main). |
FUEL_SELECTOR_2_LEFT_AUX | KEY_FUEL_SELECTOR_2_LEFT_AUX | N/A | Turns selector 2 to LEFT AUX position. |
FUEL_SELECTOR_2_LEFT_MAIN | KEY_FUEL_SELECTOR_2_LEFT_MAIN | N/A | Sets the fuel selector for engine 2 to the left Main tank. |
FUEL_SELECTOR_2_OFF | KEY_FUEL_SELECTOR_2_OFF | N/A | Turns selector 2 to OFF position. |
FUEL_SELECTOR_2_RIGHT | KEY_FUEL_SELECTOR_2_RIGHT | N/A | Turns selector 2 to RIGHT position (fuel will be retrieved from Right Tip then Right Aux then Right Main) |
FUEL_SELECTOR_2_RIGHT_AUX | KEY_FUEL_SELECTOR_2_RIGHT_AUX | N/A | Turns selector 2 to RIGHT AUX position. |
FUEL_SELECTOR_2_RIGHT_MAIN | KEY_FUEL_SELECTOR_2_RIGHT_MAIN | N/A | Sets the fuel selector for engine 2 to the right Main tank. |
FUEL_SELECTOR_2_SET | KEY_FUEL_SELECTOR_2_SET | [0]: Number | Sets selector 2 position (see the Fuel Selector Codes list for the correct code to use). |
FUEL_SELECTOR_3_ALL | KEY_FUEL_SELECTOR_3_ALL | N/A | Turns selector 3 to ALL position. |
FUEL_SELECTOR_3_CENTER | KEY_FUEL_SELECTOR_3_CENTER | N/A | Turns selector 3 to CENTER position. |
FUEL_SELECTOR_3_CROSSFEED | KEY_FUEL_SELECTOR_3_CROSSFEED | N/A | Sets fuel selector 3 to “Crossfeed”. |
FUEL_SELECTOR_3_ISOLATE | KEY_FUEL_SELECTOR_3_ISOLATE | N/A | Sets fuel selector 3 to “Isolate”. |
FUEL_SELECTOR_3_LEFT | KEY_FUEL_SELECTOR_3_LEFT | N/A | Turns selector 3 to LEFT position (fuel will be retrieved from Left Tip then Left Aux then Left Main). |
FUEL_SELECTOR_3_LEFT_AUX | KEY_FUEL_SELECTOR_3_LEFT_AUX | N/A | Turns selector 3 to LEFT AUX position. |
FUEL_SELECTOR_3_LEFT_MAIN | KEY_FUEL_SELECTOR_3_LEFT_MAIN | N/A | Sets the fuel selector for engine 3 to the left Main tank. |
FUEL_SELECTOR_3_OFF | KEY_FUEL_SELECTOR_3_OFF | N/A | Turns selector 3 to OFF position. |
FUEL_SELECTOR_3_RIGHT | KEY_FUEL_SELECTOR_3_RIGHT | N/A | Turns selector 3 to RIGHT position (fuel will be retrieved from Right Tip then Right Aux then Right Main). |
FUEL_SELECTOR_3_RIGHT_AUX | KEY_FUEL_SELECTOR_3_RIGHT_AUX | N/A | Turns selector 3 to RIGHT AUX position. |
FUEL_SELECTOR_3_RIGHT_MAIN | KEY_FUEL_SELECTOR_3_RIGHT_MAIN | N/A | Sets the fuel selector for engine 3 to the right Main tank. |
FUEL_SELECTOR_3_SET | KEY_FUEL_SELECTOR_3_SET | [0]: Number | Sets selector 3 position (see the Fuel Selector Codes list for the correct code to use). |
FUEL_SELECTOR_4_ALL | KEY_FUEL_SELECTOR_4_ALL | N/A | Turns selector 4 to ALL position. |
FUEL_SELECTOR_4_CENTER | KEY_FUEL_SELECTOR_4_CENTER | N/A | Turns selector 4 to CENTER position. |
FUEL_SELECTOR_4_CROSSFEED | KEY_FUEL_SELECTOR_4_CROSSFEED | N/A | Sets fuel selector 4 to “Crossfeed”. |
FUEL_SELECTOR_4_ISOLATE | KEY_FUEL_SELECTOR_4_ISOLATE | N/A | Sets fuel selector 4 to “Isolate”. |
FUEL_SELECTOR_4_OFF | KEY_FUEL_SELECTOR_4_OFF | N/A | Turns selector 4 to OFF position. |
FUEL_SELECTOR_4_LEFT | KEY_FUEL_SELECTOR_4_LEFT | N/A | Turns selector 4 to LEFT position (fuel will be retrieved from Left Tip then Left Aux then Left Main). |
FUEL_SELECTOR_4_LEFT_AUX | KEY_FUEL_SELECTOR_4_LEFT_AUX | N/A | Turns selector 4 to LEFT AUX position. |
FUEL_SELECTOR_4_LEFT_MAIN | KEY_FUEL_SELECTOR_4_LEFT_MAIN | N/A | Sets the fuel selector for engine 4 to the left Main tank. |
FUEL_SELECTOR_4_RIGHT | KEY_FUEL_SELECTOR_4_RIGHT | N/A | Turns selector 4 to RIGHT position (fuel will be retrieved from Right Tip then Right Aux then Right Main). |
FUEL_SELECTOR_4_RIGHT_AUX | KEY_FUEL_SELECTOR_4_RIGHT_AUX | N/A | Turns selector 4 to RIGHT AUX position. |
FUEL_SELECTOR_4_RIGHT_MAIN | KEY_FUEL_SELECTOR_4_RIGHT_MAIN | N/A | Sets the fuel selector for engine 4 to the right Main tank. |
FUEL_SELECTOR_4_SET | KEY_FUEL_SELECTOR_4_SET | [0]: Number | Sets selector 4 position (see the Fuel Selector Codes list for the correct code to use). |
Fuel System
These key event IDs are used to control the modern Microsoft Flight Simulator 2024 [FUEL_SYSTEM].
| Key Name | Event ID | Parameters | Description |
|---|---|---|---|
FUELSYSTEM_JUNCTION_SET | KEY_FUELSYSTEM_JUNCTION_SET | [0]: Junction Index[1]: Option index | Set the current junction options for which lines are open or closed at any given time. This event requires two parameters: the first is the index of the junction (as defined by the N index of the Junction.N parameter), and the second is the Option index, which is what sets the lines to open/close. |
FUELSYSTEM_PUMP_OFF | KEY_FUELSYSTEM_PUMP_OFF | [0]: Pump Index | Turn a fuel pump off. The event requires the N index of the Pump.N parameter to define the pump to use. |
FUELSYSTEM_PUMP_ON | KEY_FUELSYSTEM_PUMP_ON | [0]: Pump Index | Turn a fuel pump on. The event requires the N index of the Pump.N parameter to define the pump to use. |
FUELSYSTEM_PUMP_SET | KEY_FUELSYSTEM_PUMP_SET | [0]: Pump Index[1]: Status 0 = Off 1 = On 2 = Auto | Set a fuel pump to be either on or off or auto. The event requires the N index of the Pump.N parameter to define the pump to use. |
FUELSYSTEM_PUMP_TOGGLE | KEY_FUELSYSTEM_PUMP_TOGGLE | [0]: Pump Index | Toggle a fuel pump on/off. The event requires the N index of the Pump.N parameter to define the pump to use. |
FUELSYSTEM_TRIGGER_OFF | KEY_FUELSYSTEM_TRIGGER_OFF | [0]: Trigger Index | Turn a trigger event off. The event requires the N index of the Trigger.N parameter to define the trigger to switch off. |
FUELSYSTEM_TRIGGER_ON | KEY_FUELSYSTEM_TRIGGER_ON | [0]: Trigger Index | Turn a trigger event on. The event requires the N index of the Trigger.N parameter to define the trigger to switch off. |
FUELSYSTEM_TRIGGER_SET | KEY_FUELSYSTEM_TRIGGER_SET | [0]: Trigger Index[1]: Status, either on (1) or off (0) | Set a trigger event to be either on or off. The event requires the N index of the Trigger.N parameter to define the trigger to switch off. |
FUELSYSTEM_TRIGGER_TOGGLE | KEY_FUELSYSTEM_TRIGGER_TOGGLE | [0]: Trigger Index | Toggle a trigger event on/off. The event requires the N index of the Trigger.N parameter to define the trigger to switch off. |
FUELSYSTEM_VALVE_CLOSE | KEY_FUELSYSTEM_VALVE_CLOSE | [0]: Valve Index | Close a specific valve in the fuel system. The event requires the N index of the Valve.N parameter to define the valve to target. |
FUELSYSTEM_VALVE_OPEN | KEY_FUELSYSTEM_VALVE_OPEN | [0]: Valve Index | Open a specific valve in the fuel system. The event requires the N index of the Valve.N parameter to define the valve to target. |
FUELSYSTEM_VALVE_SET | KEY_FUELSYSTEM_VALVE_SET | [0]: Valve Index[1]: Status, either open (1) or closed (0) | Set a valve to be either open or closed. The event requires the N index of the Valve.N parameter to define the valve to target. |
FUELSYSTEM_VALVE_TOGGLE | KEY_FUELSYSTEM_VALVE_TOGGLE | [0]: Valve Index | Toggle a valve open/closed. The event requires the N index of the Valve.N parameter to define the valve to target. |
Fuel Transfer Keys
The following keys are only required when using the legacy [FUEL] system.
| Key Name | Event ID | Parameters | Description |
|---|---|---|---|
| — | — | — | — |
SET_FUEL_TRANSFER_CUSTOM | KEY_SET_FUEL_TRANSFER_CUSTOM | N/A | Set the fuel transfer mode to the “custom” setting. Requires that at least 1 transfer pump has been defined in the flight_model.cfg file using the fuel_transfer_pump.N parameter. |
FUEL_TRANSFER_CUSTOM_INDEX_TOGGLE | KEY_FUEL_TRANSFER_CUSTOM_INDEX_TOGGLE | [0]: pump Index | Toggle a custom fuel transfer pump on/off. The index is the Pump ID value supplied as part of the fuel pump definition for the fuel_transfer_pump.N#fuel_transfer_pump.N` parameter in the flight_model.cfg file. |
SET_FUEL_TRANSFER_FORWARD | KEY_SET_FUEL_TRANSFER_FORWARD | N/A | Set the fuel transfer system to use the “forward” setting, which pumps from tank 1 to tank 2. |
SET_FUEL_TRANSFER_AFT | KEY_SET_FUEL_TRANSFER_AFT | N/A | Set the fuel transfer system to use the “aft” setting, which pumps from tank 2 to tank 1. |
SET_FUEL_TRANSFER_AUTO | KEY_SET_FUEL_TRANSFER_AUTO | N/A | Set the fuel transfer pump to automatically balance the fuel in tanks 1 and 2 to maintain the CG. |
SET_FUEL_TRANSFER_OFF | KEY_SET_FUEL_TRANSFER_OFF | N/A | Set the fuel transfer pump to off. |
Miscellaneous
| Key Name | Event ID | Parameters | Description |
|---|---|---|---|
ADD_FUEL_QUANTITY | KEY_ADD_FUEL_QUANTITY | [0]: The fuel quantity | Adds fuel to the aircraft, 25% of capacity by default. 0 to 65535 (max fuel) can be passed. |
ELECT_FUEL_PUMP_SET | KEY_ELECT_FUEL_PUMP_SET | [0]: Value | Set the electrical pump status for all engines. Values are as follows:0 = Off1 = On2 = AutoThese keys are only useful when using the legacy [FUEL] system. |
ELECT_FUEL_PUMP1_SETELECT_FUEL_PUMP2_SETELECT_FUEL_PUMP3_SETELECT_FUEL_PUMP4_SET | KEY_ELECT_FUEL_PUMP1_SETKEY_ELECT_FUEL_PUMP2_SETKEY_ELECT_FUEL_PUMP3_SETKEY_ELECT_FUEL_PUMP4_SET | [0]: Value | Set the electrical pump status for engines 1-4. Values are as follows:0 = Off1 = On2 = AutoThese keys are only useful when using the legacy [FUEL] system. |
ENGINE_FUELFLOW_BUG_POSITION1ENGINE_FUELFLOW_BUG_POSITION2ENGINE_FUELFLOW_BUG_POSITION3ENGINE_FUELFLOW_BUG_POSITION4 | N/A | Not currently used in the simulation. | |
FUEL_DUMP_SWITCH_SET | KEY_FUEL_DUMP_SWITCH_SET | [0]: Bool | Set to 1 (TRUE) or 0 (FALSE). The switch can only be set to TRUE if fuel_dump_rate is specified in the flight_model.cfg, indicating that a fuel dump system exists.This key is only useful when using the legacy [FUEL] system. |
FUEL_DUMP_TOGGLE | KEY_FUEL_DUMP_TOGGLE | N/A | Used to turn on (1, TRUE) or off (0, FALSE) the fuel dump switch.This key is only useful when using the legacy [FUEL] system. |
MANUAL_FUEL_PRESSURE_PUMP | KEY_MANUAL_FUEL_PRESSURE_PUMP | N/A | Activate the manual fuel pressure pump. Used for both modern [FUEL_SYSTEM] and legacy [FUEL] systems. |
MANUAL_FUEL_PRESSURE_PUMP_SET | KEY_MANUAL_FUEL_PRESSURE_PUMP_SET | [0]: The pump index[1]: A value between 0 and 16384 | Set the position of the fuel manual pump handle, as a percentage. This key is only useful when using the modern [FUEL_SYSTEM]. |
MANUAL_FUEL_TRANSFER | KEY_MANUAL_FUEL_TRANSFER | [0]: Bool | When set to 1 (TRUE) it sets the fuel transfer mode to manual. |
RELEASE_DROP_TANK_ALL | KEY_RELEASE_DROP_TANK_ALL | N/A | Release all external tanks that can be jettisoned. |
RELEASE_DROP_TANK_1 | KEY_RELEASE_DROP_TANK_1 | N/A | Release the first external tank that can be jettisoned. |
RELEASE_DROP_TANK_2 | KEY_RELEASE_DROP_TANK_2 | N/A | Release the second external tank that can be jettisoned. |
REPAIR_AND_REFUEL | KEY_REPAIR_AND_REFUEL | N/A | Fully repair and refuel the user aircraft. Ignored if flight realism is enforced. |
REQUEST_FUEL_KEY | KEY_REQUEST_FUEL | N/A | Request a fuel truck. The aircraft must be in a parking spot for this to be successful. |
ANTIDETONATION_TANK_VALVE_TOGGLE | KEY_TOGGLE_ANTIDETONATION_TANK_VALVE | [0]: Tank index (optional) | Toggle the anti-detonation valve. Pass a value to determine which tank to use if there are multiple tanks. See the Fuel Selector Codes list for the correct tank code to use. Note that this key requires the [ANTIDETONATION SYSTEM.N] system to have been set up in the engine configuration file. |
NITROUS_TANK_VALVE_TOGGLE | KEY_TOGGLE_NITROUS_TANK_VALVE | [0]: Tank index (optional) | Toggle the nitrous valve. Pass a value to determine which tank to use if there are multiple tanks. See the Fuel Selector Codes list for the correct tank code to use. Note that this key requires the [NITROUS SYSTEM.N] system to have been set up in the engine configuration file. |
Fuel Selector Codes
| FuelSelector | Code |
|---|---|
FUEL_TANK_SELECTOR_OFF | 0 |
FUEL_TANK_SELECTOR_ALL | 1 |
FUEL_TANK_SELECTOR_LEFT | 2 |
FUEL_TANK_SELECTOR_RIGHT | 3 |
FUEL_TANK_SELECTOR_LEFT_AUX | 4 |
FUEL_TANK_SELECTOR_RIGHT_AUX | 5 |
FUEL_TANK_SELECTOR_CENTER | 6 |
FUEL_TANK_SELECTOR_CENTER2 | 7 |
FUEL_TANK_SELECTOR_CENTER3 | 8 |
FUEL_TANK_SELECTOR_EXTERNAL1 | 9 |
FUEL_TANK_SELECTOR_EXTERNAL2 | 10 |
FUEL_TANK_SELECTOR_RIGHT_TIP | 11 |
FUEL_TANK_SELECTOR_LEFT_TIP | 12 |
FUEL_TANK_SELECTOR_CROSSFEED | 13 |
FUEL_TANK_SELECTOR_CROSSFEED_L2R | 14 |
FUEL_TANK_SELECTOR_CROSSFEED_R2L | 15 |
FUEL_TANK_SELECTOR_BOTH | 16 |
FUEL_TANK_SELECTOR_EXTERNAL_ALL | 17 |
FUEL_TANK_SELECTOR_ISOLATE | 18 |