When is it necessary to use ATIS frequency?

Using the ATIS (Automatic Terminal Information Service) frequency is primarily essential for obtaining updated weather information and significant airport conditions. ATIS provides pilots and airside vehicle operators with continuous broadcasts of important data such as wind direction and speed, visibility, cloud cover, temperature, runway availability, and active NOTAMs (Notices to Airmen). This information is crucial for ensuring safety and effective decision-making while operating in the airport environment.

While it might seem relevant to use ATIS for situations like preparing for takeoff, landing, or taxiing, the primary purpose of ATIS is to supply current weather and airport condition updates. Thus, accessing ATIS before any flight maneuver is part of a good safety practice, but specifically, its primary function centers on delivering critical environmental data, making that the most accurate choice in this context.