Dan Cooper jumped from a Boeing 727 and at the time, the weather was bad, and Cooper was said to have jumped over a heavily wooded area. The parachute was not stable, and it could not withstand the heavy winds. So many theories about what happened to Cooper emerged over the years.
Unfortunately, no trace of Cooper’s body has been found. No theory or claim could confirm who Cooper was, why he hijacked the flight, and whether or not he survived his daring jump. The FBI has said that while the case is closed, they would preserve the evidence but not act.