R-33 (missile) - R-37

R-37

A governmental decision of 8 April 1983 authorized the development of K-37 (izdeliye 610, upgraded version of R-33) for the MiG-31M. The first flight of MiG-31M №0151 was on 21 December 1985. The first launches of K-37 were performed from MiG-31M in 1988. The tests were continued up to 1997.