HTK-BS104 Early Su-27S/P/UB "Flanker-B/C" paint set
Standard colours of Su-27 fleet in early service
The Sukhoi Su-27 Flanker is a twin-engine multirole fighter (S version) / pure fighter-interceptor aircraft (P version). First prototype of T10-1 (Sukhoi internal designation) flew in May 1977. The production Su-27S "Flanker-B" began to enter Soviet AF service in 1985, while the twin-seater Su-27UB ("Flanker-C") appeared only in 1987.
Due to manufacturing optimisation reasons production of single and twin seaters was separated and conducted by two remote factories (hence two lines of Su-27 family development in later years).
In total 517 Su-27S/P and 123 Su-27UB/UP were built till end of 1991 and the collapse of the Soviet Union. Further 56 of both versions were produced for the Russian AF from 1992 till 2011.