A distributed communication, navigation and surveillance (CNS) system architecture is designed to improve the internal space and reduce the empty weight and power consumption of the next generation large passenger aircraft. The distributed CNS system architecture design integrates the RF transceiver sensors and distributes most of the system processing to the aircraft area near the antenna, with the rest of the system's digital portion hosted on a general-purpose computing platform, the IMA. The results show that the design can maximize the use of shared resources, reduce RF cable loss, system design complexity, cost and size, weight, and power (SWaP), and provide ideas for aircraft design and development.