What should be used to guide a vehicle's approach to the aircraft within the Circle of Safety?

Using spotters to guide a vehicle's approach to the aircraft within the Circle of Safety is essential for maintaining safety during ground operations. Spotters are trained personnel who have a clear line of sight and can communicate critical directions to the vehicle operator. Their role is to ensure that the vehicle does not encroach on areas where it could potentially interfere with aircraft operations or pose a danger to personnel working on the ramp.

By utilizing spotters, the vehicle operator receives real-time feedback and instructions, helping to navigate safely and efficiently in the vicinity of aircraft. This approach reduces the likelihood of accidents by providing an additional layer of situational awareness and ensuring that safety protocols are followed during ground handling activities.

Other methods, such as self-guided systems or visual markers, may not provide the level of real-time, adaptive guidance that spotters offer in dynamic environments. While communication devices are important for conveying information, the presence of spotters directly enhances safety by actively managing the vehicle's positioning and movement around aircraft.