engines and were used as anti-submarine aircraft in the LeLv 6 squadron. Two aircraft were rebuilt and were used as trainers. The Finnish Air Force withdrew all SB aircraft in 1945, and all were scrapped in 1950. Luftwaffe operated captured aircraft, including Czech-built Avia B-71 and Soviet SB. Polish Air Force operated few USB 2M-103 aircraft for training after World War II. Slovakia Slovak Air Force operated one Avia B-71 aircraft until April 18, 1943, when čtk Anton Vanko and four other airmen defected with it to Turkey. Soviet Air Force Aeroflot received an unknown number of retired military SB 2M-100 aircraft in 1938 and after rebuild, used them under the designation PS-40. Another batch of retired SBbis 3 bombers was rebuilt in 1940 and used under the designation PS-41. Republican Spanish Air Force received its first 31 SB 2M-100A bombers on 14 October 1936. The second batch of 31 aircraft was delivered in June–July 1937 and a final batch of 31 following in 1938. The Soviet Union delivered a total of 93 SBs to Spain. Nationalist Spanish Air Force captured 19 SB 2M-100A bombers. All were overhauled and Soviet M-100 engines were replaced with French Hispano Suiza 12Ybrs. These aircraft were used operationally and later for training duties, and were retired in 1950. Spanish pilots called captured SB bombers Katiuska. Aircraft on display After Stalin's post-war cleanup in the 1950s, many ANT-40s that survived the Second World War were scrapped. In the late 1970s, however, Vozdushni Transport (A Soviet aviation newspaper) sent an expedition led by Evgeny Konoplev to survey an ANT-40 that was forced to land during a snow storm near the Yuzhne Muiski mountain range in the Baikal region. Konoplev considered what they found encouraging, with the aircraft being in fairly decent condition, in turn leading a team of VVS pilots to recover the airplane. It was returned to Moscow and restored by a group of volunteer Tupolev employees. The restored aircraft was unveiled in April 1982 at the Central Air Force Museum at Monino Airfield. Another ANT-40 is displayed in Verhnyaya Pyshma. A reproduction of an SB-2 is under construction by the La Senia Airfield Association in La Sénia, Catalonia. Specifications (SB 2M-103) See also References Notes Bibliography Beevor, Antony. Stalingrad. London:Penguin Books, 1999. . Duffy, Paul and Andrei Kandalov. Tupolev: The Man and His Aircraft. Shrewsbury, UK:Airlife, 1996. . Gunston, Bill. The Osprey Encyclopedia of