Most of the 230 occupants on-board were from the United States, but 42 more came from France, 10 from Argentina, and 60 more from sixteen other countries.
The pilots on board TWA Flight 800 were Captain Ralph G. Kevorkian, Co-pilot Steven E. Snyder and Flight Engineer Richard G. Campbell. All had more than 30 years employment with Trans World Airlines. There was also a Flight Engineer Trainee on board Oliver Krick, who was starting the sixth leg of his initial operating experience training.