Aeroflot Flight 418 figured in an accident (possibly caused by a radar failure) on June 1 1976.
Undetermined (possible radar failure) The cause of the accident could not be determined, but the investigation commission suspected a possible failure of the MSRP-12 radar on the aircraft may have led the crew to be unaware of their position. The plane crashed on into a mountain near Malabo Airport on Bioko Island, Equatorial Guinea on 1 June 1976. 
