What does a steady green light signal from ATC indicate during flight?

A steady green light signal from Air Traffic Control (ATC) indicates that an aircraft is cleared to land. This signal is used to provide pilots with a clear, visual indication that they can approach the runway and land safely. Pilots are trained to recognize that a steady green light is a direct and affirmative clearance for landing, thus ensuring that communication with ATC is straightforward and unambiguous.

In the context of air traffic, other light signals serve different purposes: for instance, a steady red light signals that the pilot must stop and not proceed, while a flashing green light indicates that the aircraft is cleared to taxi. Understanding these signals is crucial for maintaining safety and effective communication in aviation.