The ADS-C Ground Distribution Service enables a number of operational use cases that are described in the EUROCONTROL Specification for Data Link Ground Distribution SWIM Services: Subscribe to ADS-C Messages by Specific ICAO 24-bit Aircraft Addresses. Subscribe to ADS-C Messages matching a Filter Condition. Receive Messages from Predefined Subscriptions. Enables consumer to perform a Demand Contract Request. Enables a consumer to query Flight Status details about a flight. ADS-C Ground Distribution Service Status Monitoring.