16/09/1975 Mikoyan MiG-31 interceptor makes its maiden flight
Preparing for takeoff. MiG-31 'Foxhound'
WORLDS FASTEST AIRCRAFT in service today Russian Mig 31 Foxhound
Development of the MiG-25's replacement began with the Ye-155MP prototype which first flew in 1975. Although it bore a superficial resemblance to the MiG-25, it had a longer fuselage to accommodate the radar operator's cockpit and was in many respects a new design.