the former Soviet Union using the original plans and dies. These aircraft are powered by the American Allison V-1710 or the Pratt & Whitney R-1830 Twin Wasp engine in place of the Klimov V-12s used during the war. Several of these aircraft are airworthy, mostly based in the United States with others in Germany, Australia and New Zealand. Others have been converted to "Yak-3U" status from original Yak-11 trainers for private owners and museums. Flying a modified modern production Yak-3UPW powered by a Pratt & Whitney R-2000 engine, William Whiteside set an official international speed record for piston-engined aircraft in the under- category on 10 October 2011, reaching over a course at the Bonneville Salt Flats in Utah in the United States, greatly exceeding the previous record of set in 2002 by Jim Wright. The following day, Whiteside used the same aircraft to set an unofficial speed record for aircraft in the category of over the same 3-km (1.863-mile) course. Specifications (Yak-3) See also References Notes Bibliography Bergström, Christer. Bagration to Berlin: The final Air Battle in the East 1944–45. Hersham UK, Classic Publications, 2008. . Donald, David and Jon Lake, eds. Encyclopedia of World Military Aircraft. London: AIRtime Publishing, 1996. . Glancey, Jonathan. Spitfire: The Illustrated Biography. London: Atlantic Books, 2006. . Gordon, Yefim. Soviet Airpower in World War II. Hinckley UK: Midland / Ian Allan Publishing, 2008. . Gordon, Yefim and Dmitri Khazanov. Soviet Combat Aircraft of the Second World War, Volume I: Single-Engined Fighters. Earl Shilton, Leicester, UK: Midland Publishing Ltd., 1998. . Green, William. Warplanes of the Second World War, Volume III: Fighters. London: Macdonald & Co. (Publishers) Ltd., 1961 (seventh impression 1973). . Green, William and Gordon Swanborough. WW2 Aircraft Fact Files: Soviet Air Force Fighters, Part 2. London: Macdonald and Jane's Publishers Ltd., 1978. . Gunston, Bill. Aircraft of World War Two. London: Octopus Books Limited, 1980. . Kopenhagen, W., ed. Das große Flugzeug-Typenbuch (in German). Stuggart, Germany: Transpress, 1987. . Liss, Witold. The Yak 9 Series (Aircraft in Profile number 185). Leatherhead, Surrey, UK: Profile Publications Ltd., 1967. Matricardi, Paolo. Aerei Militari: caccia e ricognitori. (in Italian) Milano: Mondadori Electa S.p.A., 2006. NO ISBN. Mellinger, George. Yakovlev Aces of World War 2. Botley, UK: Osprey Publishing Ltd., 2005. . Morgan, Hugh. Gli assi Sovietici della Seconda guerra mondiale. Edizioni del Prado/Osprey Aviation, 1999. . Morgan, Hugh. Soviet Aces of World War 2. London: