What is the procedure for grounding an aircraft during cold refueling?

Grounding an aircraft during cold refueling is a critical safety procedure aimed at preventing static electricity discharge, which can ignite fuel vapors. The correct answer involves grounding the jet, the fuel truck, and creating a bond between the truck and the jet, which ensures that any static electricity can be safely dissipated to the ground.

Grounding the aircraft ensures that it is at the same electrical potential as the ground to prevent any static build-up. Grounding the fuel truck similarly protects against static electricity that can accumulate during the fuel transfer process. Establishing a bond between the truck and the aircraft creates a continuous conductive path, allowing any static charge to equalize and further preventing the risk of ignition. This comprehensive grounding procedure reduces the likelihood of fire hazards during the refueling process.

In scenarios where only the aircraft or fuel truck is grounded, or if there’s no bonding between both the truck and the jet, there would still be a potential risk of static discharge, which can lead to dangerous situations. Hence, grounding all involved parties and ensuring proper connections is essential for safe operations during cold refueling.