What is the typical update frequency for ATIS?

The typical update frequency for Automatic Terminal Information Service (ATIS) is set to ensure that pilots receive the most current and relevant information for their flights. The correct option reflects that updates are usually made every 15 minutes before the hour to 5 minutes after. This schedule allows for a timely flow of information in a structured manner, providing pilots with accurate Weather, Runway, and other operational data pertinent to their approach and landing.

This frequent updating is crucial at busy airports, where conditions can change rapidly, necessitating regular refreshes of available information. The slight window after the hour ensures that key updates are made just after the quarter hour mark, keeping the information current for incoming flights.

While updates may occur every 10 minutes or 30 minutes in certain operations or under specific conditions, the standard timing balances the need for timely updates with the operational efficiency of the airport, which aligns with the correct answer. Additionally, updates occurring every hour on the hour would not reflect the dynamic nature of air traffic and weather changes, making that approach less effective for operational requirements at most airports.