A series of green flashes directed at an aircraft in flight means?

The series of green flashes directed at an aircraft in flight indicates that the aircraft is cleared to land. This signal is part of the standardized communication protocols used in aviation, known as light signals, which are particularly useful when radio communication is not possible.

In this context, the green flashes are used by air traffic control to visually communicate with pilots. A continuous series of green flashes specifically conveys permission for the aircraft to proceed with its landing, ensuring safety and proper coordination during the landing phase. Understanding these light signals is critical for pilots, especially in situations where other forms of communication may be compromised.

While the other responses pertain to various situations in flight operations, they do not specifically indicate a clearance to land. Actions like returning for landing or giving way to other aircraft may involve different signals or instructions that are not represented by green flashes. The light signals are standardized, and recognizing each color and pattern is essential for effective communication in aviation safety.