What type of messages are played back by the ATIS system?

The ATIS (Automatic Terminal Information Service) system primarily delivers looped broadcast messages to pilots that contain essential information about airport conditions, weather updates, runway usage, and important notices. These messages are non-urgent and are regularly updated to provide current information relevant for flight operations.

The ATIS system operates by continuously looping these messages, allowing pilots to receive critical updates without needing direct communication with air traffic control. This enables a more efficient flow of information and reduces the workload on the controllers.

Given the context of the options, the choice of loop back messages reflects the nature of how ATIS disseminates information, which is through a repeated play of the pre-recorded announcements that pilots listen to before their approach or departure. This ensures they are well-informed about real-time operational conditions at the airport.