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3/2/73 AIRTEL ATRHAIL TO: ACTING DIRECTOR, FBI (164-2111) > i Cu FROM: SAC, SEATTLE (164~81)(P) v= SUBJECT: NORJAK 00: SEATTLE MONTHLY SUMMARY Re: Seattle airtel to the Bureau, 2/7/73. SEARCH AREA AND COURSE In attempt to determine the accuracy of the first search area, the following ‘vas learned: The first search area Was calculated using a system of plotting known as "GEOREF" (i.e. Geographical Reference) which has a plotting error of plus or minus one mile. A new plotting system using a computer rsenerated latitude and lonpgi- tude has a plottins erp lus or minusS 1/2 wile. Using the new system, | | Northwest Orient Airlines[ b6 plotted a new course for the Norjak airplane and a new seqre b7C area based on the new course. The new search area is partially outside the first area. It is felt that if Unsub's parachute opened, he is no longer in the southvest Washington area, but if Hs parachute did not open, he would ba in a corridor along the flight path. The time of jump is known, and an arca approximately one mile by seven miles represents the area Unsub. would have landed in if his parachute did not open. Seattle Division is currently making arrangements ‘to Search that portion of the above described area not previously searched, ARTIST SKETCH \ ot _- Bureau - Soarchoa ping Gg ~ Seattle Serialized.._.* W/s Indexed cence, pice) Awe) Filed ro -s DB Cooper-10800 /469—-§1-YWV?7