Steve J.Wittman (United States) WOLF – Donald S.Wolf (United States) WOLFSBERG – Wolfsberg Aircraft Corporation NV (Belgium); Wolfsberg-Evektor SRO (Czech Republic) WOODS – H.L.Woods (United States) WREN – Wren Aircraft Corporation (United States) WUHAN – Wuhan Helicopter General Aviation Corporation (China) WÜST – Wüst GmbH (Germany) WZL 3 – Wojskowe Zaklady Lotnicze Nr.3 (Poland) X XIAN – Xian Aircraft Company (China) Y YAKOVLEV – Moskovskii Mashinostroitelnyy Zavod "Skorost" Imeni A.S.Yakovleva (Russia); Opytno-Konstruktorskoye Byuro Imeni A S Yakovleva OAO (Russia); Yakovlev Aviatsionnoye Korporatsiya OAO (Russia); Yakovlev OKB (Russia) YALO – Zaklad Naprawy i Budowy Sprzetu Latajacego Yalo SC (Poland) Z ZENAIR – Zenair Ltd (Canada) ZENITH – Zénith Aircraft Company (United States) ZIVKO – Zivko Aeronautics Inc (United States) ZLIN – Moravan Aeroplanes Inc (Czech Republic); Moravan AS (Czech Republic); Moravan Národní Podnik (Czech Republic); Zlinská Letecká AS (Czech Republic) See also List of aircraft manufacturers ICAO name