The K-8's development began in 1955, known as
R-8 in service. Like most Soviet air-to-air missiles, it was made with a choice of
semi-active radar homing or
infrared seeker heads. The original missile was compatible with the Uragan-5B
radar used on the
Sukhoi Su-11 and several developmental aircraft from
Mikoyan-Gurevich. An inert training version was also developed, designated
UR-8M. The R-98 brought down
Korean Air Lines Flight 007 on September 1, 1983. ==Operators==