A leading Chinese aviation engineer has outlined a plan to create a fully independent supply chain for large passenger jets, addressing potential Western sanctions.

A leading Chinese aviation engineer has set out a detailed blueprint for building a fully self-sufficient supply chain for large passenger jets. The paper, written by Zhang Yanzhong, a senior academician at the Chinese Academy of Engineering and the former chief scientist of the Aviation Industry Corporation of China, acknowledged there was a very real risk that the country could be cut off entirely from components made in the West. Known as the “father of China’s large aircraft” for his decades...