This paper designs a set of airborne equipment integrated with RDSS satellite communication and 3G/4G data communication. This airborne equipment realizes the function of emergency communications and positioning of common aero vehicle, provides the data communication of low cost and multi channels, and strengthens the security of aircraft, supplements the coverage of general aviation airspace control. This equipment has a small size and high integration, and it can be customized according to the user needs, and has the ability of high expansibility and scalability. The power part of RDSS airborne equipment adopts soft switch control mode, and has the strong reliability and maintainability.