The 1938 Japan mid-air collision between an Imperial Japanese Army Air Force flying school Mitsubishi Ki1 military trainer and a Japan Air Transport Fokker Super Universal airliner occurred on August 24, 1938 over the Ōmori district of Tokyo. Both aircraft were destroyed, killing the crew of both planes – two on the military trainer and three on the airliner (there were no passengers). A large number of people on the ground were killed or injured.
Different sources give different ground casualty totals: 40 dead and 106 injured, at least 53 dead, 55 dead and 190 injured, 63 dead, 65 dead and 60 injured, 80 dead and 76 injured, 80 dead and 78 injured. The precise number is probably lost to history, but the high casualty count was because when the Fokker crashed a curious crowd gathered around the wreckage, and then the Fokker's fuel tank exploded, a few minutes after it had crashed.