Helicopter Bell OH-13H Sioux Serial 2479 Register 3B-HA used by Österreichische Luftstreitkräfte (Austrian Air Force). Aircraft history and location Aircraft History 3B-HA Österreichische Luftstreitkräfte 1966-02-21OL w/o 21Feb66 1987 A Museum of Military History Exhibit On display at the Heeresgeschichtliches Museum by Send Updates Use APP to upload photo @ (optional) When Now? / / Send