Abstract:In order to meet CCAR/FAR/CS 25.1309 airworthiness requirements, commercial airplane safety design and management platform has been established, combined with the COMAC new plane development procedures. In areas of development processes management, life cycle configuration management and security quantitative analysis, this engineering method will provide aircraft systems security analysis and assessment, airworthiness work flow management and technical support and guarantee, to initiate research and development in this field in China, and to improve China's commercial airplane airworthiness certification work.