What is one of the primary functions of the Boost Pumps?

The primary function of boost pumps in an aircraft fuel system is to enable fuel crossfeeding. Boost pumps are designed to maintain fuel pressure and ensure that fuel is delivered from the tanks to the engine consistently, especially when the aircraft is in certain flight conditions or configurations, such as during takeoff and landing or if there is a low fuel level in a tank.

Crossfeeding allows fuel to be transferred between tank systems when needed, optimizing the fuel supply and allowing for a more balanced weight distribution across the wings, which is particularly important for flight safety and performance.

While boost pumps can indirectly support functions related to engine shutdown or tank weight management, their main role is to ensure adequate pressure and flow of fuel, facilitating crossfeeding to maintain operational efficiency. Using boost pumps for navigation assistance is not their intended function, as they are not related to the aircraft's navigational systems.