What is the speed limit around the aircraft?

The correct answer is that the speed limit around the aircraft is walking speed, typically ranging from 3 to 5 mph. This speed limit is set primarily for safety reasons. When personnel are working around aircraft, maintaining a slower pace helps to ensure that everyone can remain aware of their surroundings and respond quickly if needed.

In busy airport environments, where there can be a high volume of personnel and equipment, adhering to walking speed allows for better communication and minimizes the risk of accidents. It ensures that all personnel are vigilant, especially in areas where they might be working closely with aircraft, which can be large and require significant caution. The reduced speed encourages a safer working atmosphere where any sudden movements or changes can be recognized and addressed immediately.

Faster speeds, such as those suggested in the other options, could lead to dangerous situations where personnel or ground equipment could be at risk of injury due to limited reaction time. The walking speed rule is an established best practice aimed at maintaining safety and operational efficiency around aircraft.