Draft — this page has not been reviewed yet.
Fuel system¶
From the README¶
- Migrated to "modern fuel system" (MSFS 2024) architecture.
- Restored the IRL behavior of the wing tanks: the "Engine" position enables the electric pump that feeds fuel from the wing tanks into the main tanks.
- A valve will pause the transfer around 75-80% per target tank.
- The wing tanks "refuel" position does nothing.
- Wing tank pump failure warning lights illuminate when the pumps can't draw fuel.
From the release notes¶
Verbatim from docs/release-notes-*.md, grouped by the section they appeared in. The tag is the version each item first appeared in.
Fuel system¶
- Overhauled boost pumps and fuel selector for more accurate behavior. Restored missing audio, removed conflicting audio. (v2024.2.142)
- Worked around the sim driving engine-driven fuel pump pressure from shaft (propeller) RPM instead of Ng. The pump is now hard-off below 35 % Ng and ramps back in above 40 %, with a small pressure floor so combustion stays alive with a feathered or near-stopped prop. (v2024.2.142)
- Migrated to "modern fuel system" (MSFS 2024) architecture. (v2024.2.x)
- Restored the IRL behavior of the wing tanks: the "Engine" position enables the electric pump that feeds fuel from the wing tanks into the main tanks. (v2024.2.x)
- A valve will pause the transfer around 75-80% per target tank. (v2024.2.x)
- The wing tanks "refuel" position does nothing. (v2024.2.x)
- Wing tank pump failure warning lights illuminate when the pumps can't draw fuel. (v2024.2.x)
- Electric fuel pumps now take a moment to build pressure. (v2024.3.183)
- Feedback: Removed the mandatory boost pump requirement below 8000 ft density altitude. (v2024.3.183)
L:vars¶
Variables worth binding to hardware, driving from FSUIPC / Axis&Ohs / SPAD.neXt,
or reading on an external display. R is read-only state; R/W can be set.
This is a selection, not the full list — the aircraft defines around a thousand
DHC6_* names, most of them internal.
| L:var | R/W | Meaning |
|---|---|---|
DHC6_FUEL_WING_TANK_L |
R/W | Left wing-tank selector |
DHC6_FUEL_WING_TANK_R |
R/W | Right wing-tank selector |
DHC6_WING_PUMP_ELEC_L |
R | Left wing electric pump running |
DHC6_WING_PUMP_ELEC_R |
R | Right wing electric pump running |
DHC6_WING_PUMP_WARN_L |
R | Left wing pump can't draw — the warning lamp |
DHC6_WING_PUMP_WARN_R |
R | Right wing pump warning |
DHC6_FUELBOOST_FWD_STATE |
R | Forward boost pump state |
DHC6_FUELBOOST_AFT_STATE |
R | Aft boost pump state |