FAA Ground School Practice Test

A flashing white light signal from the control tower to a taxiing aircraft means:

1. Return to starting point on the airport

2. Proceed to the runway

3. Prepare for takeoff

4. Hold position

The correct answer is: Return to starting point on the airport

A flashing white light signal from the control tower to a taxiing aircraft indicates that the aircraft should return to the starting point on the airport. This signal is part of the series of light signals used by air traffic control to communicate with pilots when radio communication is not possible or is being supplemented. In this context, it's important to understand the implications of such a signal. Returning to the starting point means that the aircraft must taxi back to the original location, which is typically a taxiway or ramp area where it can safely remain on the ground without impeding other operations. This ensures the safety and orderly management of aircraft movement on the airport. The other signals have specific meanings as well: for example, a steady green light indicates that it is safe to proceed to the runway, while a steady red light instructs the aircraft to hold its position. A flashing white light is distinct in its instruction, emphasizing the need for the aircraft to maneuver back to its initial position, making it a clear directive within ground operations.