Quality Aircraft Accessories (QAA) stocks aircraft hydraulic power packs from a variety of manufacturers, including Cessna and Prestolite. QAA makes aircraft hydraulic power packs available on an exchange basis by working with the most trusted repair stations; Aerospace Turbine Rotables and Cox Airparts. .Overhaul/Exchange. Price shown does not include core. Core is extra. Visit our E-store to browse our huge selection!