What will alert the controller that wind shear is present?

• A. The audible alarm will sound
• B. The wind indicator spins
• C. The controller's voice call
• D. The radar color changes

Answer: (A)

Wind shear is a rapid change in wind speed or direction that can dramatically affect an aircraft, especially during takeoff and landing. The built-in wind-shear detection system in the control room is designed to give an immediate warning, so an audible alarm sounds to alert the controller that wind shear is present. This quick, unmistakable signal prompts the controller to issue the necessary advisories and adjustments to aircraft and sequencing.

A spinning wind indicator simply shows current wind readings, not an alert. A controller’s voice call is how they communicate, not an automatic warning signal. Radar color changes may reflect weather patterns, but they don’t provide a definitive automatic wind-shear alert to the controller.