For a certain period after the end of the war, Japan was forbidden from any activities related to the development and production of aircraft, and our aerospace industry thus fell behind those of the US and Europe. Starting with the licensed production of defense aircraft, national development and production systems have grown. The development and manufacture of defense aircraft forms the foundation of the Japanese aerospace industry. In recent years the F-2 fighter (a joint Japan-US project), the OH-1 observation helicopter, the T-4 and T-7 trainer, and the US-2 search & rescue flying boat have been successfully developed and manufactured. The P-1 Fixed- wing Maritime Patrol Aircraft has been in operation since 2013, and the C-2 Transport Aircraft has begun its delivery to the base in March 2017. Japanese manufacturers are participating in the manufacture of the F-35A fighter jet, helping to further strengthen the foundation of the aerospace industry. Delivery of the F-35A has begun in 2018. Moreover, In 2020, the next fighter(F-2 successor) business had been launched under the leadership of Japan, and on December 14,2023, the Japan, the United Kingdom, and Italy held a meeting of defense ministers to establish an efficient collaboration system in the Global Combat Air Programme (GCAP), which is being jointly developed under the scheme called “GCAP International Government Organisation(GIGO)” and Founding Treaty was signed. In a joint statement, the minister of the three countries signed the “Convention on the Establishment of GCAP Government Agencies” and stated that GIGO would lay the foundation for strengthening the defense industrial base of each country and deploy the next generation of fighter aircrafts by 2035. And in 2021, development of the UH-2 Multipurpose Helicopter, successor to the UH-1J, has