On August 6 1997 about 0142:26 Guam local time Korean Air flight 801 a Boeing 747-300 crashed at Nimitz Hill Guam. The aircraft was on its way from Seoul Korea to Guam with 237 passengers and a crew of 17 on board. Of the 254 persons on board 228 were killed. The airplane was destroyed by impact forces and a post-crash fire. The National Transportation Safety Board determined that the probable cause of the accident was captain’s fatigue and Korean Air’s inadequate flight crew training.