The purpose of this study is to analyze the causes of differences in the level of development of the aircraft industry in Korea and Japan from a theoretical perspective based on the developmental state thesis, despite similar international environment and domestic efforts. Korea has caught up with Japan early and secured international competitiveness in most related industries, including the steel, shipbuilding, chemical and automobile industries, which began to be fostered as strategic industries in the 1970s, but still lag far behind Japan in the aircraft industry, which is the generalization of such industries. To analyse these causes, the study notes the level of embedded autonomy that implies governments' ability to connect and communicate with industries in the period from the 1950s to the early 1990s, which is an important time for the development of the aircraft industry in both Korea and Japan, and where strategic interactions between the countries and industries are most starkly contrasted.
Although there have been many restrictions on the development of the aircraft industry both at home and abroad after the war, the Japanese government has established and implemented effective aircraft industry policies through a high degree of embedded autonomy that links and communicates with businesses. The combined influence of the Japanese government and the business community has convinced opposing forces and enabled them to implement policies consistent with their goals, which have enabled the successful development of the aircraft industry. In Korea, on the other hand, the linkage between the government and businesses remained at a very poor level in the process of establishing and implementing policies for the aircraft industry. The government's strong autonomy was a force to ensure the cohesion of resources and the driving force of policies strongly in the early stage of the development of the aircraft industry, but the embedded autonomy of the government, which remained at a low level, delayed the development of the industry. As such, the difference in embedded autonomy between Korea and Japan in the aircraft industry directly affected each country's industrial policy-making and implementation process, which consequently led to a wide gap in the level of aircraft industry development.