Why is bonding the fuel supply to the aircraft important?

Bonding the fuel supply to the aircraft is crucial primarily for reducing the risk of a spark from static electricity. During refueling, fuel flows at high velocity, which can cause static charge accumulation due to friction. If a static charge builds up and discharges, it can create a spark that poses a significant fire hazard, especially in the presence of flammable aviation fuels.

By bonding the fuel supply and the aircraft, you establish an electrical connection that allows any static charge to dissipate safely to the ground. This process not only protects the aircraft but also ensures the safety of ground personnel and equipment involved in the refueling process. This practice is fundamental in maintaining safety standards in aviation operations.

While the other choices may relate to various aspects of fuel management and operational efficiency, they do not specifically address the paramount concern that bonding is intended to mitigate—the risk of static electricity igniting fuel vapors during the refueling process.