As mentioned previously, as of December 8, 2022, this case remains unsolved. But not for lack of trying: As the FBI notes, the agency has been steadfastly investigating this case for half a century, and has even interviewed a few suspects. One suspect, Richard Floyd McCoy, was arrested a few months after the D.B. Cooper hijacking for — wait for it — hijacking an airplane and parachuting away with the money. However, physical descriptions provided by two witnesses to the Cooper hijacking did not in any way match McCoy, and he was cleared as a suspect in this particular case.
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In order for “Cooper” to have pulled off this heist, he and his co-conspirators (if indeed there were any) would have required knowledge in several key areas, including the mechanics of certain Boeing aircraft and the lay of the land in and around southwestern Washington. And by 2022, the FBI had turned its attention to a woman named Marla Cooper and her relatives, who possibly checked off a couple of those boxes.
