ATC Terminal Practice Test

The duration for which wind shear information is included in the Automatic Terminal Information Service (ATIS) is 20 minutes following the last report or indication of its presence. This time frame is established to ensure that pilots have access to the most relevant and timely weather information that could impact their approach, landing, or takeoff phases. Wind shear can pose significant risks during these operations, and maintaining an updated status for 20 minutes allows for a more cautious and informed decision-making process by flight crews.

This 20-minute window takes into consideration the dynamic nature of weather conditions and helps ensure safety by informing incoming or departing aircraft of any recent phenomena. As conditions can change and new wind shear occurrences may arise, having a shorter reporting time might not fully capture the current situation, while a longer reporting time could lead to outdated information that no longer reflects the current conditions.