Austrian Airlines Flight 901 Austrian Airlines Flight 901 Austrian Airlines Flight 901 was a flight from Vienna, Austria to Moscow, USSR (now Russia) via Warsaw, Poland. On the night of 26 September 1960 the aircraft operating the flight, a Vickers Viscount, crashed near Moscow while on its approach to land, killing 31 of the 37 passengers and crew on board. The aircraft was a Vickers Viscount 837 four-engined turboprop airliner registered "OE-LAF". The aircraft had first flown on 10 February 1960 and had been delivered new to Austrian Airlines about two weeks later, seven months before the crash. The aircraft departed Warsaw with six
Turboprop in the experimental Consolidated Vultee XP-81. The XP-81 first flew in December 1945, the first aircraft to use a combination of turboprop and turbojet power. The technology of the Allison's earlier T38 design evolved into the Allison T56, with quartets of the T56s being used to power the Lockheed Electra airliner, its military maritime patrol derivative the P-3 Orion, and the widely produced C-130 Hercules military transport aircraft. One of the most produced turboprop engines used in civil aviation is the Pratt & Whitney Canada PT6 engine. The first turbine-powered, shaft-driven helicopter was the Kaman K-225, a development of Charles