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SAC, SEATTLE (164-81) 11/30/71 SA CHARLES £. FARRELL URKHOWN SUBJECT; HVORTHWEST ATREINGS PLIGHT 2305, PORTLAND TO SEATTLE, 11/24/71 CAA ~- HIJACKING; CXTORTION 00: SEATTLE BUFile 164-2111 Re: SUSPECT ~ CESSNA or TR-6 plane, near Yacoit, Washinaton On 11/30/71, SA THOMAS J. NANNING advised that investigation concerning the suspect aircraft now discloses that it could be a TR-6 instead of a Cessna and that both kinds of aircraft should be considered. He said a TR-6 was a World War II training plane and that several of them are still being used. ELE ak FEI—SEATTLE DB Cooper-2208 Srzeua H, ts