Which sequence of "Mike Keys" results in the highest light intensity at airports with pilot controlled lighting?

The correct answer, which indicates the highest light intensity at airports with pilot-controlled lighting, corresponds to the sequence of “Mike Keys” set to 7. This sequence is designed to increase the output of the lighting system, thus providing maximum visibility for pilots during their approach and landing procedures.

When pilots engage a pilot-controlled lighting system, they utilize the "Mike Key" function, which allows them to send a specific number of clicks to adjust the light intensity. Each sequence corresponds to a different level of brightness, with a higher sequence number representing a greater intensity.

In this context, the number 7 represents the maximum setting, which is crucial during times of low visibility or at night, helping to guide pilots safely to the runway. The other options represent lower intensity settings, which, while still functional, do not provide the same level of illumination essential for enhanced safety in critical phases of flight.