|Sikorsky S-27 Type E|
|Designer||Igor I. Sikorsky|
|First flight||late 1916 |
|Primary users|| Russia|
|Number built||3+6  to 12|
|Developed from||Sikorsky S-22|
|Wingspan||31.3 m (102 ft 8 in)  to 38 m (124 ft 8 in)|
450–680 kg (1,000–1,500 lb)  to 800 kg (1,760 lb) of bombs
|Max Speed||137 km/h (85 mph) |
|Climb||2,000 m (6,500 ft) in 25:00 |
|Ceiling||3,200 m (10,500 ft)  to 4,000 m (13,100 ft)|
|Endurance||4:00  to 5:00|
Three S-27 Type E Il'ya Muromets four-engine bombers were created near the end of 1916. They were the largest of the breed and included a crew of eight with five machine-gun positions, including an aft-facing belly position. The prototype arrived at the front in early 1917. Five more were built during 1917, but they only saw service with the Soviet air force. 
For more information, see Wikipedia:Sikorsky Ilya Muromets.
- Durkota, p.324.
- Angelucci, p.73.
- Lamberton, pp.228-229.
- Angelucci, p.65.
- Enzo Angelucci, ed. The Rand McNally Encyclopedia of Military Aircraft, 1914-1980. New York: The Military Press, 1983 edition. ISBN 0-517-41021-4.
- Alan Durkota, Thomas Darcey, and Victor Kulikov. The Imperial Russian Air Service. Flying Machines Press, 1995. ISBN 0-9637110-2-4
- W.M. Lamberton and E.F. Cheesman, Reconnaissance & Bomber Aircraft of the 1914-1918 War. Great Britain: Harleyford Publications Ltd., 1962. ISBN 9780900435027