This paper analyzes quality management of aviation safety services in Korea and proposes practical implications for improvement. We look into how quality management is conducted in the Korean aviation industry and confirm aviation authority's efforts for a quality management system. We also compare and analyze international standard ISO 9001 and aviation safety oversight system quality management cases of International Civil Aviation Organization (ICAO) and U.S. Federal Aviation Administration (FAA) with a Korean case. Results find the difference in defining the scope of ISO 9001 management between ICAO/FAA and the Korean authority which causes unnecessary misunderstanding in oversight perception. The Korean aviation authority strives to provide a high level of safety oversight services by educating aviation safety inspectors as well as establishing a quality management system. We believe that our proposals can help Korean aviation safety oversight system secure objective credibility and seek a safe growth and development of the aviation industry.