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ao FD-36 (Rev. 5-22-64) FB Transmit the following in rac xm i \e. {Type in plaintext or code) PREDED EEE URGENT | (Priority) | TO : SAC, PORTLAND x Treats LNPTOR | FROM: SAC, SEATTLE (164-81) Via UNSUB; NORTHWEST AIRLINES FLIGHT THREE ZERO FIVE, NOVEMBER TWENTYFOUR, NINETEEN SEVENTYONE, CAA DASH HIJACKING; EXTORTION, OFFICE OF ORIGIN; SEATTLE. INFORMATION DEVELOPED NOVEMBER TWENTYEIGHT LAST AT VANCOUVER, WASHINGTON, THROUGH CONTACT WITH EXPERIENCED AVIATION PERSONNEL REFLECTS POSSIBILITY THAT A VOR RECEIVING DEVICE, POSSIBLY COMPOSED OF TRANSISTERIZE e) ‘PONENTS AND SMALL ENOUGH TO BE PLACED IN A POCKET, COULD HAVE BEEN USED BY THE SUBJECT TO MAKE GROUND CONTACT EVEN THOUGH VISUAL CONTACT WAS IMPOSSIBLE, SEATTLE DIVISION SECURING LIST OF DISTRIBUTORS OF VOR COMPONENTS AT A AVIATION COMPANY IN VANCOUVER, WASHINGTON, AND iT HAS BEEN SUGGESTED THAT ANOTHER MANUFACTURER OF SUCH COMPONENTS IS HILLSBORO AVIATION AT HILLSBORO, OREGON, PORTLAND, AT HILLSBORO, OREGON, CONTACT HILLSBORO AVIATION SECURE LIST OF DISTRIBUTORS OF SHALL VOR UNITS AND CONDUCT APPROPRIATE INVESTIGATION TO IDENTIFY INDIVIDUALS WHO HAVE PURCHASED SUCH ITEMS FROM THE DISTRIBUTORS, Pp, /)4-9/-/9E TIM/rmh 2 , b6 1 a —, " bIC fy” Approved: ay e Sent 10% _ M Per San ! Special abe t in Sheree Uf YY U.S, GOVERNMENT PRINTING OFFICE: (971-413-135 DB Cooper-1910