What does a flashing white signal indicate for an aircraft on the ground?

A flashing white signal for an aircraft on the ground indicates that the aircraft should return to the starting point at the airport. This signal is part of the standardized lighting communication used at airports to guide pilots effectively. It is primarily utilized when a pilot is at a location where they may be preparing for taxi or departure, but the control tower needs to direct them back to their original position, often due to traffic management or safety considerations.

In the context of ground signals, options such as taxiing to the runway or preparing for departure would typically be indicated by solid or different colored signals, which provide explicit directions for those actions. Advising the control tower of intentions is more about communication protocol rather than a direct signal indication. The flashing white signal is specifically characterized by its instruction to return, emphasizing the importance of adherence to ground signal protocols for the safety and efficiency of airport operations.