How should a ground operator respond if they observe a fuel leak originating from an aircraft wing during ground operations?

If a ground operator observes a fuel leak originating from an aircraft wing during ground operations, immediate and decisive action is required to mitigate the fire hazard and potential environmental damage. The very first step is to immediately stop all operations in the vicinity of the aircraft. This includes stopping any fueling, baggage handling, or pushback activities. Simultaneously, alert the flight crew and airport emergency services, providing them with specific details about the leak, including its location, estimated flow rate, and the type of fuel. Immediately establish a safety perimeter around the aircraft to prevent unauthorized access and to keep personnel and equipment away from the potential ignition zone. This perimeter should be upwind of the leak, if possible. Eliminate all potential ignition sources within the safety perimeter. This includes shutting down engines of nearby vehicles, prohibiting smoking, and avoiding the use of cell phones or other electronic devices that could generate a spark. If the leak is small and contained, use absorbent materials, such as absorbent pads or booms, to soak up the fuel. Dispose of the contaminated materials properly in accordance with environmental regulations. If the leak is large or uncontrolled, do not attempt to contain it yourself. Instead, allow the airport fire department to handle the situation. They have the specialized equipment and training necessary to safely control fuel leaks. Follow the instructions of the fire department and other emergency responders. Provide them with any information they request. After the leak has been stopped and the fuel has been cleaned up, a thorough inspection of the aircraft wing should be conducted to determine the cause of the leak and to assess the extent of the damage. The aircraft should not be moved or flown until the leak has been repaired and the aircraft has been certified as airworthy. Document the incident, including the date, time, location, type of fuel, estimated quantity of fuel leaked, and the actions taken. This information will be used for reporting to regulatory agencies and for conducting a root cause analysis.