What should you do if you are approaching a towered airport but cannot receive instructions?

When approaching a towered airport and you are unable to receive instructions, the best course of action is to join the airport traffic pattern and look for light gun signals.

By entering the traffic pattern, you can conform to the established procedures and maintain safe separation from other aircraft that may be in the pattern or landing. The use of light gun signals from the control tower is a standard method of communication in situations where radio communication is not possible. The tower can use these signals to provide guidance on whether you should continue to orbit, land, or make other maneuvers.

This approach ensures that you remain predictable to both other pilots and the tower, creating a safer environment until you regain radio communication or receive further instructions. It's important to remain vigilant and maintain a lookout for other aircraft while in the pattern.