This standard defines an Internet Protocol (IP)-based communication management function for data communications called the Manager of Air/Ground Interface Communications (MAGIC). This standard recognizes that the number of available off-board communication links is expanding (e.g., broadband satellite, broadband terrestrial, Gatelink), and that each link may be provided by a different service provider. In addition, each link may be available to the aircraft in specific flight phases and in specific geographic locations. As the industry continues to increasingly embrace IP-based communications, there is reason to define an aircraft routing function that provides standardized access by all aircraft subnets to available communication links.