Where is the engine-driven fuel boost pump mounted?

Where is the engine-driven fuel boost pump mounted?

• A. On the helicopter fuselage
• B. On the engine accessory module
• C. In the engine block
• D. In the fuel tank

Answer: (B)

The engine-driven fuel boost pump is mounted on the engine accessory module. This keeps the pump directly connected to the engine via the accessory gearbox, so it can deliver pressurized fuel to the engine’s fuel control unit during start and high-demand operations. Placing the pump here provides a short, reliable fuel path and consistent pressure regardless of aircraft attitude. It wouldn’t be on the helicopter fuselage, inside the engine block, or inside a fuel tank because those locations wouldn’t provide the immediate, engine-driven pressure the system requires and would complicate the fuel path or rely on gravity rather than mechanical drive.

The engine-driven fuel boost pump is mounted on the engine accessory module. This keeps the pump directly connected to the engine via the accessory gearbox, so it can deliver pressurized fuel to the engine’s fuel control unit during start and high-demand operations. Placing the pump here provides a short, reliable fuel path and consistent pressure regardless of aircraft attitude.

It wouldn’t be on the helicopter fuselage, inside the engine block, or inside a fuel tank because those locations wouldn’t provide the immediate, engine-driven pressure the system requires and would complicate the fuel path or rely on gravity rather than mechanical drive.