Based on the Tupolev Tu-4 airframe, in 1967 China developed an AWACS platform to try and enable them to monitor US Atomic tests in the Pacific. Powered by four Ivchenko AI-20K turboprop engines, the project was named KJ-1 and had a Type 843 rotordome pylon mounted above the fuselage. Trials were unsuccessful as the equipment was too heavy and failed to meet PLAAF requirements, the project was cancelled in 1971.

An extraordinary machine by any standard. In 1967, China attempted to develop its first AEW platform based on the Tu-4 airframe with AI-20 turboprop engines. The project was named KJ-1, with a Type 843 rotor-dome on top. However, the equipment was too heavy and failed to meet PLAAF requirements so the project was cancelled in 1971