Airplane is one of the transportation modes that is safety sensitive and must comply with certain regulations to still be airworthy to fly. Therefore, maintenance plays an important role in the airline industry. To deliver excellent service, airlines need to provide airworthy aircrafts that can perform maximum flight hours to optimize the company’s ticket sales. Aircraft Maintenance Organization, under the qualification of Directorate General of Civil Aviation (DGCA) and in accordance with the airline’s maintenance manuals, performs and ensures the airworthiness of each aircraft through preventive maintenance activities or better known as maintenance program. Preventive maintenance has several characteristics defining it, including manpower, intervals, spares and materials, managers, failures, etc. The aim of this study is to identify the characteristics implemented in aircraft maintenance organizations in Indonesia which conducted maintenance of Airbus A320 fleet and the importance each characteristic plays in it.