During mobile fueling, where should the grounding wire be connected?

During mobile fueling, where should the grounding wire be connected?

• A. To the aircraft
• B. To the truck chassis
• C. To the fuel nozzle
• D. To the fuel filler cap

Answer: (A)

Static electricity can build up as fuel moves and flows, and a proper bonding path prevents a spark from igniting vapors. During mobile fueling, the grounding wire must be connected to the aircraft so the aircraft and the fueling system share the same electrical potential. The bonding point is on the aircraft’s metal structure or a designated bonding point, not the truck chassis, fuel nozzle, or filler cap. If you tried to bond to the truck, nozzle, or cap, you could miss a reliable path to the aircraft’s metal, increasing the risk of a static discharge near fuel vapors.

Static electricity can build up as fuel moves and flows, and a proper bonding path prevents a spark from igniting vapors. During mobile fueling, the grounding wire must be connected to the aircraft so the aircraft and the fueling system share the same electrical potential. The bonding point is on the aircraft’s metal structure or a designated bonding point, not the truck chassis, fuel nozzle, or filler cap. If you tried to bond to the truck, nozzle, or cap, you could miss a reliable path to the aircraft’s metal, increasing the risk of a static discharge near fuel vapors.