Hong Kong Aircraft Engineering Company Limited (Chinese: 香港飛機工程有限公司), better known as HAECO (港機工程), (SEHK: 0044, OTC Pink: HKAEY). Established in Hong Kong in 1950, HAECO is one of the world’s leading independent aircraft engineering and maintenance groups. It is one of the largest Maintenance, Repair and Overhaul (MRO) service providers in terms of capacity.