In what position should the nozzle be when hooked to the fueling door?

When the nozzle is hooked to the fueling door, it must be in the locked position. This is crucial for ensuring a safe and secure connection during the refueling process. The locked position prevents any unintended disconnection while fuel is being transferred, minimizing the risk of fuel spills, which can be hazardous. It also ensures that the nozzle is properly seated in the fueling door, allowing for an efficient and smooth fuel flow.

In contrast, the open position could lead to fuel leakage or a failure to properly fuel the aircraft. The disconnected state would obviously not allow refueling to take place. A horizontal position may not ensure the physical connection and seal required for safe fueling operations. Thus, the locked position is necessary to maintain safety and operational integrity during refueling missions on the Super Hornet.