Schweizer Aircraft Corporation-Elmira-United States-Manufacturer - Airframe
Schweizer Aircraft Corporation-Elmira-United States-Supplier
Sikorsky Aircraft-Stratford-United States-Manufacturer - Airframe
Vought Aircraft Industries-Dallas-United States-Manufacturer - Airframe
Aviaexport-Moscow-Russia-Aviation Consultancy
California Helicopter-Ventura-United States-Supplier
Harbin Aviation Industry Group (HAIG)-Harbin-China-Manufacturer - Airframe
Pratt & Whitney (Govt. Engines & Space Propulsion)-West Palm Beach-United States-Supplier
Slone Helicopters-Sywell-United Kingdom-Supplier
Rolls-Royce Aerospace-Derby-United Kingdom-Supplier