A mid-air collision between a Boeing 727 and a fighter jet in Japan kills 162 people on this day in 1971. The military plane was flying without radar.

All Nippon Airways Flight 58 was traveling from Chitose Airport in Hokkaido to Tokyo, filled largely with members of a group dedicated to the assistance of war victims. Takeoff was uneventful and the plane soon reached 28,000 feet. Cruising over the Japanese Alps, Flight 58 suddenly encountered two military jets.

One of the Japanese F-86 Sabre jets was piloted by Captain Kuma; the other was being flown by his student, Sergeant Ichikawa, who had only a few hours of flying experience. Neither jet was equipped with radar, which would have indicated the presence of the Boeing 727. Ichikawa’s fighter jet struck the airliner and sent both planes plunging into the mountains. Ichikawa was able to eject himself and parachute to safety. Everyone on board Flight 58, however, was killed.

Yoshimi Ichikawa was charged with involuntary manslaughter, but was acquitted at trial.