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September 16, 1975
The prototype of the Mikoyan MiG-31 (example pictured), one of the fastest combat jets in the world, made its maiden flight.
Mikoyan MiG-31
The Mikoyan MiG-31 is a supersonic interceptor aircraft developed for the Soviet Air Forces by the Mikoyan design bureau as a replacement for the earlier MiG-25 "Foxbat"; the MiG-31 is based on and shares design elements with the MiG-25.