HELIOPOLIS – Heliopolis Air Works (Egypt) HELIPRO – Helipro Corporation International (United States) HELI-SPORT – CH-7 Heli-Sport Srl. (Italy); Heli-Sport Srl (Italy) HELWAN – Helwan Air Works (Egypt) HENDERSON – Henderson Aero Specialties Inc (United States) HESA – HESA (Iran Aircraft Manufacturing Industries Company) (Iran) HFB – Hamburger Flugzeugbau GmbH (Germany) HIGHLANDER – Highlander Aircraft Corporation (United States) HILLBERG – Hillberg Helicopters (United States) HILLER – Hiller Aircraft Company Inc (United States); Hiller Aircraft Corporation (United States); Hiller Aviation Inc (United States); Hiller Helicopters (United States); Hiller Helicopters Inc (United States) HIRTH – Wolf Hirth GmbH (Germany) HISPANO – La Hispano Aviacion SA (Spain) HISTORICAL AIRCRAFT – Historical Aircraft Corporation (United States) HK – HK Aircraft Technology AG (Germany) HOAC – HOAC Austria Flugzeugwerk Wiener Neustadt GmbH (Austria) HOFFMANN – Hoffmann Aircraft Flugzeugproduktion und Entwicklung GmbH (Austria); Hoffmann Flugzeugbau-Friesach GmbH (Austria); Wolf Hoffmann Flugzeugbau KG (Germany) HOLCOMB – Jerry Holcomb (United States) HOLLMANN – Martin Hollmann (United States) HONDA – Honda Motor Company Ltd (Japan) HONDA-MISSISSIPPI – see HONDA and MISSISSIPPI HONGDU – Hongdu Aviation Industry Group (China) HOVEY – Robert W.Hovey (United States) HOWARD (1) – Howard Aircraft Corporation (United States) HOWARD (2) – Howard Aero Inc (United States); Howard Aero Manufacturing Division of Business Aircraft Corporation (United States) HOWARD HUGHES – Howard Hughes Engineering Pty Ltd (Australia) HPA – High Performance Aircraft GmbH & Co KG (Germany) HUGHES – Hughes Helicopters Division of Summa Corporation (United States); Hughes Helicopters Inc (United States); Hughes Tool Company,Aircraft Division (United States) HUMMEL – J.Morry Hummel (United States) HUNTING – Hunting Aircraft Ltd (United Kingdom) HUNTING PERCIVAL – Hunting Percival Aircraft Ltd (United Kingdom) HUREL-DUBOIS – Société de Construction des Avions Hurel-Dubois (France) HYDROPLANE – Gidroplan ooo (Russia); Hydroplane Ltd (Russia) HYNES – Hynes Helicopter Inc (United States) HYUNDAI – Hyundai Precision Industry (South Korea) I IAI – India Aircraft Industries Ltd (India) IANNOTTA – Dott.Ing.Orlando Iannotta (Italy) IAR – SC IAR SA (Romania) IBIS – Ibis Aerospace Ltd (Czech Republic/Taiwan) ICA – Intreprinderea de Constructii Aeronautice (Romania) ICP – ICP Srl (Italy) III – Iniziative Industriali Italiane SpA (Italy) IKAR – OOO Aviaklub Ikar (Ukraine) ILYUSHIN – Aviatsionnyi Kompleks Imeni S.V.Ilyushina OAO (Russia); Ilyushin OKB (Russia) IMCO – Intermountain Manufacturing Company (United States) IMP – IMP Group Ltd (Canada) IMPULSE – Impulse Aircraft GmbH (Germany) INDAER CHILE – Industria Aeronáutica de Chile (Chile) INDAER PERU – Industria Aeronáutica del Perú S.A.