Serving the industry since 1969, Summit Accessory Services specializes in the repair, overhaul and modification of Aircraft Pneumatics, Hydraulics, Fuel, Surface Controls and Auxiliary Power Units (APU). This includes but is not limited to, pneumatics starters, pneumatic valves, air cycle machines, power control units (PCU), fuel pumps, fuel shut off valves, flap transmissions, jack screws, actuators and much more.