What ATC light gun signal indicates 'Stop'?

What ATC light gun signal indicates 'Stop'?

• A. Steady Red
• B. Steady Green
• C. Flashing Green
• D. Flashing Red

Answer: (A)

A steady red light from ATC is the direct signal to stop. When the controller uses the light gun and holds a steady red, it means you must halt your movement and remain in place until another signal is given. This method provides a clear, unambiguous instruction to stop, which is crucial for safety on the ground and when radio communication isn’t available. Other light gun signals use green signals to indicate proceed (either for landing/takeoff or taxi, depending on the situation) or flashing patterns to convey caution or different actions, but the steady red is specifically the stop instruction.

A steady red light from ATC is the direct signal to stop. When the controller uses the light gun and holds a steady red, it means you must halt your movement and remain in place until another signal is given. This method provides a clear, unambiguous instruction to stop, which is crucial for safety on the ground and when radio communication isn’t available. Other light gun signals use green signals to indicate proceed (either for landing/takeoff or taxi, depending on the situation) or flashing patterns to convey caution or different actions, but the steady red is specifically the stop instruction.