Documents / Report
This is Project Blue Book Special Report No. 14, "Analysis of Reports of Unidentified Aerial Objects," Project No. 10073, dated 5 May 1955. The study reduced about 4,000 sighting reports received by the U.S. Air Force between June 1947 and December 1952 to IBM punched cards and analyzed them statistically, including chi square tests comparing knowns with unknowns. It concludes that the reports very probably do not represent technological developments beyond present scientific knowledge, and it notes that no case produced physical evidence.
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CODE 56 DISAPPEARANCE BEARING X - Disappeared suddenly Y 0 - N 1 - NE 2 - E 3 - SE 4 - S 5 - SW 6 - W 7 - NW 8 9 CODE 57-58 ELEVATION WITH RESPECT TO GROUND, DEGREES X Y 0 I 2 3 4 5 6 7 8 9 Initial Variable 0-9 10-19 20-29 30-39 40-49 50-59 60-69 70-79 80-89 X Y 0 1 2 3 4 5 6 7 8 9 Final Variable 0-9 10-19 20-29 30-39 40-49 50-59 60-69 70-79 80-89 CODE 61 OBJECT ORIENTATION Apparent inclination of principal axis of object from horizontal X Y 0 1 2 3 4 5 6 7 6 9 Variable •90 to ^0 «.6O to 30 4.30 to 10 4-10 to 0 0 0 to -10 -10 to -30 -30 to -60 -60 to -90 CODE 65 SERVICE X Y 0 1 2 3 4 5 6 7 8 9 Army Navy Marine Air Force Coast Guard Merchant Commercial Air CAA Gov't, Other . Contractor CODE 62-63-64 CIVILIAN OCCUPATION Dictionary of Occupational Titles, Vol. II, 2nd Edition, pp. XIX-XXVI. U.S* Department of Labor, Bureau of Employment Security. U.S. Government Printing Office, Washington, D. C , 1949. See pp. XIX-XXVI. CODE 66 DUTY X Y 0 1 2 3 4 5 6 7 8 9 Pilot Weather tech. Radar tech. Tover op. Balloon obs. Tech. spec. Guards, lookouts Ground or deck crews Navig. or bombardier Other 294
Report, cited by the archive. The PDF is mirrored here; the original link is under it. 309 pages are in the text index: search them above, or from the library's search.