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DIRECTOR, FBI (164-2111) January 14, 1972 SAC, SEATTLE (164-81) (P) NORJAK 6, 1972, E] t permission of a Northwest Airlines, flew the same Boeing 727 aircraft that was hijacked from Minneapolis to Seattle so that an experiment could be held endeavoring to simulate the exact flight conditions in order that it could be determined if the airplane reacted in the same way and in that manner when the weight equivalent to the estimated weight of the hijacker was ejected from the airplane via the back stairs. under[——t—~*~*~“‘S™CC#éd A X@CheLNS, the last three b6 rows of seats were removed from the aircraft and special b7C measuring devices were attached to the rear end of the cabin so that it could be determined exactly what happened in the aircraft when the weight was dislodged. Through the assistance of members of the U. S. Air Force, three sleds were made on which were placed sand bag weights, bringing the total weight to approximately 235 pounds, that being the estimated weight of the hijacker, the parachute, and’ the money. On the morning of January 6, 1972, the Air Force provided a tracking plane with sophisticated photographic equipment on it, which first swept the surface to insure : that there were no surface crafts in the vicinity, and at that : point the 727 ascended to approximately 7,000 feet over the * | Pacific Ocean west of Hoquiam, Washington. 2 ~ Bureau ~ Seattle , DB Cooper-5852 po | (64-3) /9DE-