When should you mention the ATIS letter code to ATC?

Mentioning the ATIS letter code to Air Traffic Control (ATC) on the initial call is a standard procedure for aircraft communications. The ATIS, or Automatic Terminal Information Service, provides essential information to pilots, including weather conditions, runway availability, and other pertinent data for a specific airport. The letter code helps ATC ensure that pilots have received the latest information before arriving at an airport and helps reduce radio congestion.

During the initial call, when a pilot communicates with ATC, stating the ATIS letter code confirms that they are referencing the correct and most recent information available. This practice aids in maintaining safety and efficiency in air traffic operations, as it enables ATC to quickly identify which information the pilot has received.

While mentioning the ATIS code during approach, upon landing, or in response to a query may be useful in certain contexts, doing so during the initial call is critical for establishing proper communication right from the start of the interaction with ATC. This ensures that expectations are clear and that both the pilot and ATC are working with the same information, which is key to safe flight operations.