Patent ID: 8850552

Claim:
A method of ensuring secure and cost effective communication of aeronautical data to and from an aircraft, the method comprising: uplinking air-ground aircraft data communications via an aeronautical safety data link, wherein the aeronautical safety data link is a communications link licensed and/or regulated to exchange safety/security data between the aircraft and at least one of a mobile system and a fixed system; implementing downlink routing protocols to output the safety/security data from a closed domain of the aircraft through a one-way firewall and through at least one of a private domain of the aircraft and a public domain of the aircraft; and downlinking air-ground aircraft data communications, including the safety/security data, from the respective at least one of the private domain of the aircraft and the public domain of the aircraft to a ground system via a consumer data link separated from the aeronautical safety data link by the one-way firewall.