He then made her write a note demanding four parachutes and $200,000 (£150,324) in 20-dollar bills as ransom, which he exchanged at Seattle airport for the 36 passengers on board the flight. Seattle plane crash: Experts baffled by 'incredible manoeuvres’ performed by airline worker who hijacked aircraft. While on the flight, he handed a stewardess a note saying he had a bomb in his briefcase and wanted her to sit with him.

He was described by his hostages as 'a quiet man who appeared to be in his mid-40s, wearing a business suit with a black tie and white shirt'. (If you need help, you can call the National Suicide Prevention Lifeline at 1-80. The FBI added that if any individual comes across any physical evidence related to the case like the parachute or the money taken by the hijacker, they should contact their local FBI field office.Ī man said to be calling himself Dan Cooper boarded the Northwest Orient Airlines for Seattle in Portland, Oregon, on 24 November, 1971. Although authorities have not released his name, The Seattle Times identified the man as Richard Russell. the airline ground agent at Seattle-Tacoma International Airport who stole a plane and flew it for more than an hour before crashing. In between the 1971 hijacking and the 1980 money find, the Columbia River was dredged and sand was deposited on Tena Bar in 1974. The plane landed in Seattle where he demanded 200 K in cash. 'In order to solve a case, the FBI must prove culpability beyond a reasonable doubt, and, unfortunately, none of the well-meaning tips or applications of new investigative technology have yielded the necessary proof,' the FBI said in a statement. While in the air, he opened his brief case showing a bomb to the flight attendant and hijacked the plane.

The FBI has closed active investigation of the 1971 D B Cooper hijacking case in which the hijacker jumped out of the plane after receiving the ransom money worth $200,000 FBI

Audio from hijack plane from seattle