What is the purpose of an approved static ground interconnected with aircraft and support equipment?

• A. Equal electrical potential to prevent arcing
• B. To drain moisture from surfaces
• C. To accelerate fuel vaporization
• D. To reduce electrical resistance

Answer: (A)

Static electricity can build up on aircraft and support equipment as they move and interact. If the aircraft, fueling truck, and other ground gear aren’t bonded to the same potential, a voltage difference can exist. When connectors are made or charges find a path, that difference can discharge as a spark, which is dangerous around fuel and sensitive systems.

An approved static ground that interconnects the aircraft and support equipment provides a single, low-impedance path to earth, so all parts are at the same electrical potential. This equalization prevents arcing and sparks during fueling and maintenance, enhancing safety for people and equipment. It’s not about draining moisture, accelerating fuel vaporization, or reducing inherent resistance—the goal is to keep everything at the same potential to avoid discharge.