We specialize exclusively in aircraft accessory repair, developing unmatched expertise across hydraulic, pneumatic, power generation, electromechanical, fuel system, and other critical aircraft systems rather than spreading ourselves across avionics, landing gear, or heavy maintenance. This specialization enables us to solve complex problems that generalist shops cannot.
Our Tumwater, Washington facility was designed for precision and efficiency, equipped with advanced machining, testing, and NDT capabilities. As an Accessory Classes I, II, III (Unlimited) repair station, we operate under FAA, CAA, and EASA certifications, with Lockheed Martin authorization for advanced accessory repair.
With more than 20,000 part numbers supported, Four Star helps operators consolidate maintenance, reduce downtime, and simplify logistics with a single trusted partner.