Dan Cooper and D.B. Cooper are pseudonyms for a hijacker who jumped from a Boeing 727 over mountainous terrain in southwest Washington state on November 24, 1971 after paying a ransom of US$200,000 (equivalent in today's equivalent). of about 1.3 million US dollars). 1972 mugshot by D.B. Cooper To date, the case has not been solved. There are a number of theories, but no certainty as to who the kidnapper was and what happened after he jumped. The only physical evidence outside the plane is three