On October 31 , 1999 , EgyptAir Flight 990 , a 767-300ER , crashed off Nantucket , Massachusetts , in international waters killing all 217 people on board . The United States National Transportation Safety Board ( NTSB ) concluded " not determined " , but determined the probable cause to be due to a deliberate action by the first officer ; Egypt disputed this conclusion . On April 15 , 2002 , Air China Flight 129 , a 767-200ER , crashed into a hill amid inclement weather while trying to land at Gimhae International Airport in Busan , South Korea . The crash resulted in the death of 129 of the 166 people on board , and the cause was attributed to pilot error
Air China Flight 129
Air China Flight 129
Boeing 767