What is the primary purpose of the crossfeed system?

The primary purpose of the crossfeed system in an aircraft fuel system is to allow the feeding of any engine from any tank. This capability enhances the operational flexibility of the fuel management system, especially during flight, as it permits the redistribution of fuel among various tanks. In situations where one fuel tank may be lower than another, the crossfeed system enables the engines to draw fuel from different tanks, thereby balancing the aircraft’s weight and maintaining its center of gravity.

This flexibility is critical for optimizing flight performance, extending range, and ensuring safety. In the event of a failure in one fuel tank or a need to balance fuel loads for landing or other flight operations, the crossfeed system allows for immediate adjustments to fuel supply, which is vital for effective flight management.