What happens when balancing fuel in the Pilatus PC-12 NG?

When balancing fuel in the Pilatus PC-12 NG, the system is designed to manage the distribution of fuel between the left and right fuel tanks to maintain proper aircraft balance during flight. The heavier side of the airplane, which contains more fuel, pumps fuel out and simultaneously closes a check valve to prevent backflow, ensuring that the fuel moves from the tank where it is most abundant to the tank where it is needed most.

This process is critical because an imbalanced fuel load can affect the aircraft's performance and handling characteristics. By allowing the heavier side to pump out fuel, the aircraft achieves a more balanced center of gravity, which is essential for optimal flight performance. Therefore, this option accurately describes the functioning of the fuel system in balancing the fuel, as it reflects the mechanics of how fuel is managed within the aircraft's design.