Simonini Flying - Two stroke engines for paramtors. Limbach Flugmotoren - German manufacturer of the Limbach aircraft engine. [Flash required] MTU Aero Engines - Manufacturer providing development, production and maintenance services for civil and military aero engines and industrial gas turbines. Franklin Aircraft Engines, Inc. - Manufacturer of light aircraft piston engines. Atkins Rotary Specialties Inc. - Supplying Mazda (RX7) rotary engines for installation in homebuilt aircraft. Zoche Aero-Diesels - Developing type certificated, direct drive, air cooled, radial, two-stroke Diesel engine. Compact Radial Engines - Manufactures and distributes radial, boxer and inline aircraft engines for experimental, PPG and ultralight aircraft. Firewall Forward - Manufacturer of Honda Civic based aircraft engines as well as propeller speed reduction units and ignition systems. EPI, Inc. - Design and development of piston engine technology and systems, specializing in aircraft V8 engines and propeller reduction gearboxes. Universal Turbine Parts - Pratt and Whitney Canada approved supplier of PT6, JT15D, and PW100 engines and components. Willis Lease Finance Corporation - Acquires and provides commercial aircraft spare engines in the aftermarket and purchases and resells used and refurbished commercial aircraft engines and airframe and engine components. (Nasdaq: WLFC). Pratt and Whitney - Leader in the design, manufacture, and support of turbine engines. Progressive Air Services - Aircraft engines, parts and accessories to worldwide market. DeltaHawk, Inc. - Designing a new two-stroke diesel engine aimed at the general aviation market. Kreisler Manufacturing Corporation - Manufactures precision metal components and assemblies for use in military and commercial aircraft engines. (Nasdaq: KRSL).