Which system is involved in managing fuel weight and balance in flight?

The fuel jettison system plays a crucial role in managing fuel weight and balance in flight. This system is specifically designed to allow aircraft to reduce their weight by expelling excess fuel when necessary, such as during an emergency landing or when the aircraft is exceeding the maximum landing weight. By jettisoning fuel, the pilot can ensure that the aircraft is within the acceptable weight limits for a safe landing, thus aiding not only in maintaining optimal flight performance but also in ensuring safety during critical phases of flight.

Fuel weight and balance are essential for effective aircraft control, and the ability to adjust fuel levels dynamically helps maintain stability and performance as the aircraft operates. Other systems, such as the fuel injection system, hydraulic system, or electrical system, do not have responsibilities directly related to manipulating fuel weight and balance, making them less relevant in this context.