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f IR f6 PD PLAIN se. feos 7325 PM URGENT 11/26/71 TLA sscecmanti on TG: . SEATTLE (164=81) FROMs PORTLAND (164-41) UNSUBS HIJACKING OF NORTHVEST ORIENT AIRLINES FLIGHT THREE ZERO FIVE, ELEVEN TWENTYFOUR SEVENTYONE,. CAA=HIJACKING$ EXTORTION, OG SEATTLE. ADVISED THAT AT APPROXIMATELY THREE THIRTY P.M. TODAY AS HE WAS MAKING APPROACH TO PORTLAND ITHTERNATIONAL ATRPORT IN FeONE ZERO ONE FIGHTER * HEARD A FATNT RADIO TONE SIGNAL BEING BROADCAST as 0 b6 THREE POINT ZERO MC, A FREQUENCY RESERVED FOR EMERGENCY b7C ON TYO FOUR AIRCRAFT RADIO TRANSMISSIONS. SIGNAL FIRST HEARD REAR EVERGREEN AIRPORT, JUST EAST OF VANCOUVER, WASHINGTON, THES HEARD SECOND TIME NEAR REYNOLDS ALUMINUM PLANT WEST OF VANCONVER, SIGNAL HEARD FOR APPROXINUTELY FIVE MINUTES, DURING wHrcK TIme[ | [___]aTTEMPTED TO OBTAIN RADIO FIX O8 AUTOMATIC DIRECTION FINDER EQUIPMENT WITHOUT SUCCESS AS SIGNAL FADED OUT. SIGNAL VAS OF END OF PAGE ONE SEARCHED. IN oI . SERIALIZE ILED Mi Bev g5 1971 C re) | FBI - ar DB Cooper-1809