Which of the following describes a situation requiring an immediate clear area on the airfield?

A fuel spill creates a hazardous situation that necessitates an immediate clear area on the airfield. Fuel spills can lead to fire risks and contamination, which can severely impact the safety of operations and personnel on the airfield. In such scenarios, swift action is essential to mitigate danger, prevent accidents, and ensure that emergency response teams can address the situation effectively.

In contrast, ground support inspections, routine maintenance, and landing assistance typically do not pose immediate dangers that would require an immediate clearing of the airfield. While each of these activities is important for safe airfield operations, they do not inherently present the same level of urgency for clearance as a fuel spill does. Therefore, understanding the immediate risks associated with different situations helps prioritize actions on the airfield, particularly in the case of hazardous conditions like fuel spills.