Meanings

Air Training Command

National Air Traffic Controllers Association

Air Developing and Proving Command

National Aeronautics and Space Administration

Air Staff College

Air Staff Office

Institute of Navigation

Air Support Command

Civil Aviation College - Obihiro Branch

Air Officer Candidate School

Civil Aviation College

Hong Kong Airlines

Civil Aviation College - Sendai Branch

Air Koryo

International Academy of Astronautics

Federation Aeronautique Internationale

International Association of Marine Aids to Navigation and Lighthouse Authorities

Regional Civil Aviation Bureau

China Airlines

Civil Aviation Administration of China