When did the hijacking take place that was the source for the fortune being sought by the three friends in the film Without a Paddle? 
Without a Paddle:  It tells the story of three reunited childhood friends going on a trip up a remote river in order to search for the loot of long-lost airplane hijacker D. B. Cooper. D. B. Cooper: D. B. Cooper is a media epithet popularly used to refer to the hijacker of a Boeing 727 aircraft in Washington, on November 24, 1971.
i don't know