If you receive a flashing green light signal while in the air, what should you do?

A flashing green light signal received while in flight indicates that you should return for landing. This signal is used by air traffic control to communicate with pilots who are airborne, informing them that they need to return to the airport.

It is crucial for pilots to understand these signals, as they provide critical instructions during various phases of flight. When you receive a flashing green light while in the air, it signifies an urgent need for you to return to the airport safely. This could be due to several factors, such as a need for you to land for operational reasons or a change in traffic that requires your return.

In this context, the other choices do not align with the meaning of the flashing green signal. For instance, landing immediately may not address the specifics of the situation at hand, and "cleared for taxi" pertains to ground movements rather than airborne communication. Proceeding to an alternate airport is not indicated at this stage either, as it suggests a level of operational separation from the original airport that is not recommended in response to a flashing green light. Understanding these signals and their meanings ensures that pilots are prepared to respond correctly in real-time operational scenarios.