How do you fuel an aircraft?

In most cases airplanes are fueled in either of 2 methods; over-wing or center point.

Over-wing is exactly that. The fueler opens a cap on the top of the wing, inserts the fuel nozzle and begins fueling. This is done on each wing. Center point fueling is done by attaching the fueling hose to a central point on the underside of the wing. Fuel is then fed to the tanks from this single connection. Proper safe fueling procedure also requires that metal fuel nozzles be grounded to the receiving aircraft before fueling is begun. This prevents a sparking electrical discharge from the plane to the hose which could cause a fire or explosion.