November 21, 1957 (September 30), Ding, jet aircraft of the U.S. Air Force personnel often crash death heavy.

1957 11 21, the Japanese air force have crashed burned an American-made F-86 jet fighter type. Japanese Air Force has therefore ordered to stop flying for two days, and thorough examination of the United States to supply the Japanese air force jet.
aircraft flight training in the sea near the base of the Hamamatsu suddenly caught fire fall into the sea. Japanese air force authorities suspect that this crash and aircraft fuel barrel. Japanese Air Force authorities had found in an inspection in 28 of the 228 F-86 jets can not take off due to functional failure of barrels of fuel.
this flight crashed 20 times this year already. 38 Air Force personnel were killed in these incidents. Japanese Air Force pilots in the series shocked hull losses, once in June 1957 decided to refuse to drive American-made jets.