SIA Engineering Co Ltd and its subsidiaries maintain, repair, and overhaul aircraft for many airlines. The company is organized into two segments: airframe/line maintenance and engine/component. In hangars and workshops, the company tends to airframes, engines, and other components. It offers scheduled checks and provides modifications to fit customers’ aesthetic desires. The line maintenance division provides aircraft certification and ground handling services and assists communication at airports. Its geographical segments include East Asia, Europe, South West Pacific, America, and West Asia & Africa.