No 136, 1914; fitted with two Salmson engines of 200 hp each and two Salmson engines of 136 hp each. Type B No 137, 1914; fitted with two Salmson engines of 200 hp each and two Salmson engines of 136 hp each. Type B No 138, 1914; fitted with two Salmson engines of 200 hp each and two Salmson engines of 136 hp each. Type B No 139, 1914; fitted with two Salmson engines of 200 hp each and two Salmson engines of 136 hp each. Ilya Muromets S-23 V(eh) Series Bomber, First flight 1914, fitted with four Sunbeam Crusader V-8 engines of 148 hp each Type V No 151, 1915; fitted with four Argus engines of 140 hp each. Type V No 159 Trainer aircraft, 1915; fitted with two Sunbeam 225 hpV-8 engines. Type V No 167, 1915; fitted with four RBVZ-6 engines of 150 hp each. Ilya Muromets S-24 G-1 Series Bomber, First flight 1914; 18 built. Ilya Muromets S-25 Series Bomber, First flight 1915; 55 built. Ilya Muromets S-25 G-2 "Russobalt" Bomber, fitted with four RBVZ-6 engines of 150 hp, 170 kg bombload, five MG. Ilya Muromets S-25 G-3 "Renobalt" Series Bomber, fitted with two Renault engines of 220 hp each and two RBVZ-6 engines of 150 hp, 190 kg bombload, six MG Ilya Muromets S-26 D-1 DIM Series Bomber, First flight 1916, fitted with four Sunbeam engines of 150 hp; three built. Ilya Muromets S-27 E (Yeh-2) Series Bomber, First flight 1916, fitted with four Renault engines of 220 hp each; two built. Operators Military / Imperial Russian Air Service Soviet Air Forces Polish Air Force Ukrainian State Ukrainian Air Force Civilian Soviet Union Civil Air Fleet Replica One Ilya Muromets S-22 replica exists in the Monino Air Force Museum near Moscow built in 1970. Specifications (Ilya Muromets Type S-23 V) See also List of Russian inventions References Notes Citations Bibliography Angelucci, Enzo. The Rand McNally Encyclopedia of Military Aircraft, 1914–1980. San Diego, California: The Military Press, 1983. . Cochrane, Dorothy and Von Hardesty. The Aviation Careers of Igor Sikorsky. Seattle, Washington: University of Washington Press, 1989. . Darcey, Alan, Thomas Kulikov and Victor Durkots. The Imperial Russian Air Service: Famous Pilots and Aircraft of World War I. Mountain View, California: Flying Machine Press, 1995. . Delear, Frank J. Igor Sikorsky: Three Careers in Aviation (Air & Space Series, No 24). New York: Bantam, 1992. Durkota,