Minimum Safe Altitude Warning (MSAW)

Minimum Safe Altitude Warning (MSAW) is a safety system used in air traffic control that alerts controllers if an aircraft is flying below a predetermined safe altitude, which could pose a risk of collision with terrain or obstacles. When such a situation is detected, the system issues an alert, prompting controllers to notify pilots and ensure corrective action is taken. MSAW helps prevent accidents by providing timely warnings, especially in areas with challenging terrain or limited visibility, thereby enhancing overall flight safety.