D.B. Cooper (1971): Seattle exchange

D.B. Cooper is the name the press invented. The ticket said Dan Cooper. The public record is a short flight, a recorded ransom, a river find and a file the FBI chose to close without a defendant. Cooper was described as a quiet man in a dark suit, white shirt, black tie and loafers, perhaps in his mid-forties, who ordered bourbon and smoked. He sat in the last row on the starboard side. After the note, he bargained through Mucklow. Northwest’s president, Donald Nyrop, authorised payment. Seattle police and FBI agents delivered a bag of $20 bills from several banks and four parachutes, two of them sport canopies from a local skydiving school.

After the passenger release, Cooper sent the remaining crew forward and used the aft stairs — a feature of the 727 that could be opened in flight. Crew instruments later showed a change consistent with a person leaving the aircraft. The jump zone was reconstructed from flight-path data as a corridor over Ariel, Washington, and the Lewis River country, later expanded as wind and timing models changed.

Special Agent Ralph Himmelsbach, who stayed with NORJAK for years, later wrote that the jumper faced night, rain, timber and a thin chance of walking out with the money. That is an investigator’s memoir, not a finding that Cooper died. The 2016 suspension cited the age of the case and the death or fading of witnesses, not a recovered body.