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Project Blue Book Special Report No. 14: Analysis of Reports of Unidentified Aerial Objects

United States Air Force, Air Technical Intelligence Center · 1955-05-05 · 309 pages · text from the file's own layer

Special Report No. 14 was issued by the U.S. Air Force's Air Technical Intelligence Center on 5 May 1955. It is a statistical study of about 4,000 reports of unidentified aerial objects from June 1947 to December 1952. The reports were reduced to IBM punched cards and analyzed with methods including chi square tests. The report concludes that the reports it examined are very unlikely to represent technology beyond present scientific knowledge, and it notes that no case produced valid physical evidence.

  • p. 94 …approach the speed of a jet before it disappeared. No propulsion was apparent. Time of observation…
Case X (Serial 1119.00)
An employee in the supersonic laboratory of an aeronautical lab-
oratory and some other employees of this lab, were by a river, 2-1/2
miles from its mouth, when they saw an object. The time was about 1700
hours on May 24, 1949. The object was reflecting sunlight when observed
by naked eye. However, he then looked at it with 8-power binoculars, at
which time there was no glare. (Did glasses have filter?) It was of
metallic construction and was seen with good enough resolution to show
that the skin was dirty. It moved off in horizontal flight at a gradually in-
creasing rate of speed, until it seemed to approach the speed of a jet
before it disappeared. No propulsion was apparent. Time of observation
was 2 - l / 2 to 3 minutes.
,Something equivalent
to a patch Smoother in
front
Direction
of motion
Rough and wrinkled
in rear
"Surface appeared dirty
and spotty in color
86
I

Cases discussed

About this file

Analysis, from the classic collection. The PDF is mirrored here; the original link is above. 309 pages are in the text index: search them above, or from the library's search.