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Firefighting

You can integrate your aircraft's own firefighting method with the Mission Hub. You will need to implement the 3D model and VFX yourself.

To interact with the mission system, Lvars are used. The specific implementation differs depending on which firefighting method your aircraft uses:

Lvars to set

MMH_COMPATIBILITY_FIREFIGHTING

Always set to 1

MMH_BAMBI_READY

Set to 1 when the bucket is ready to be used (i.e. slung under the helicopter)

MMH_BAMBI_FULL

Set this to 100 when the bucket has been filled

Lvars to read

MMH_BAMBI_FULL

Use this to show/hide water inside of the bucket.

0 = bucket empty 100 = bucket full

MMH_WATER_RELEASE

Use this to drive when your water drop vfx is active.

0 = No water being dropped 100 = Water being dropped

Lvars to set

MMH_COMPATIBILITY_FIREFIGHTING

Always set to 1

MMH_FIREFIGHTING_WATER_TANK

Always set to 1

MMH_BAMBI_READY

Set to 1 when the bucket is ready to be used (i.e. slung under the helicopter)

MMH_BAMBI_FULL

Set this to 100 when the bucket has been filled

Lvars to read

MMH_BAMBI_FULL

Use this to show/hide water inside of the bucket.

0 = bucket empty 100 = bucket full

MMH_WATER_RELEASE

Use this to drive when your water drop vfx is active.

0 = No water being dropped 100 = Water being dropped

For MSFS2024, you can make aircraft compatible with the mission hub by setting up the native water drop system. We monitor the following simvars:

  • LIQUID DROPPING SCOOP OPEN VALUE

  • LIQUID DROPPING TANK TOTAL WEIGHT

  • LIQUID DROPPING TANK TOTAL CAPACITY

  • LIQUID DROPPING TOTAL DROPPED FLOW

See: https://docs.flightsimulator.com/msfs2024/html/5_Content_Configuration/Careers/Aerial_Firefighting.htm#simvars

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