ST Engineering Aerospace is an aircraft maintenance company at 8 Changi North Way, close to Changi Airport. The company calls itself the world's largest commercial airframe maintenance, repair and overhaul provider. Its engineering work includes passenger-to-freighter conversions, aircraft interiors and unmanned aerial systems. Airframe work means maintaining, repairing and overhauling the body and structure of aircraft, so this is not a car workshop, and visitors come on business rather than for a walk-in service. Open Locally lists three other mechanics within a kilometre.