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5-202 (REV. 3-8-77) 7 me FEDERAL BUREAU OF INVESTIGATION Sew ot vomecrosion 1/33/78 In an effort to determine the capabilities of fellow passengers of the Lockheed Jetstar, N-777 EP, to bear a conversation being conducted into the Air Flite telephone, the following procedures were followed: SA a. on the divan at the farthest position towar e rear of the plane. This would be the normal position for an individual who would use the Air Flite telephone, since the instryupent is located on the fuselage wall next to the divan. picked up the telephone receiver and, sitting facing the sisle, conducted @ conversation into the telephone moutb piece in a sormal tone of voice such as used during a telephone conversation. The plane was in flight at the time maintaining s constant altitude and speed so that there was no increase or decrease in noise from the jet engines. While SA s aking into the telephone ry Te receiver, SA initially sat in the first chair on the forward right side of the passengers’ compartsent, then moved to the chair immediately aft or toward the rear from “Nis first “chair and thereafter sat in each of the pas: 5 chairs of the plane. With the exception of the two seats, one on each - Side of t which are the farthest to the rear of the plane s able to hear the siaulated conversa by who remained sitting on the divan as moved out the passenger cabin to each passenger ° It should be aoted that ats farthest to the rear in the plane froa which 8A expressed Gifficulty in overbearing the telephone conversation os located closest to the jet engines of the plane. was able to bear some of the cohversation in those H however, this was accomplished only because he was paying close attention to the fact the telephone was in use. At bis last annual physical, November "1977, there abnormalities noted in the hear ca bilities of SA tavecisgstien on 12/29/27 ___. » MEMPHIS, TEUNESSER ens o ME 996-27 a 5 Th secument conte aectner eecommondetions ner concussions of one FETS ie preserty of wna '! ong ts enned to yous agency: (2 one rts Contents ore met te be Guirsbuted euteide your epency. (1