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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. 17 …Therefore, a designation of OBJECT SIGHTINGS was established, with the following definition: OBJECT SIGHTING - (1) The…
  • p. 18 …An example was the finding of the approxi- mate angular velocity and acceleration of the object…
  • p. 23 …the reported color of the objects, because of the multiplicity of reports on some of the…
  • p. 76 …a greater proportion of UNKNOWNS in the multiple object classification. Apparently these are harder to identify…
  • p. 299 …Unit sightings, single observers Unit sightings, multiple observers Object sightings X Y 0 1 2 3…
have been familiar objects. However, the resolution of this question with
any degree of certainty appears to be impossible.
Thus, out of the 434 OBJECT SIGHTINGS that were identified as,,
UNKNOWNS by the data reduction process, there were only 12 that were
described with sufficient detail that they could be used in an attempt to
derive a model of a "flying saucer". The following is a summary of the 12
good UNKNOWN SIGHTINGS:
Case I (Serial 0573.00)
Two men employed by a rug-cleaning firm were driving across a
bridge at 0955 hours on July 29, 1948, when they saw an object glide across
the road a few hundred feet in front of them. It was shiny and metallic in
construction, about 6 to 8 feet long and 2 feet wide. It was in a flat glide
path at an altitude of about 30 feet and in a moderate turn to the left. It was
seen for only a few seconds and apparently went down in a wooded area,
although no trace of it was found.
-These are round cups which protrude
Case II (Serial 4508.00)
A naval aviation student, his wife, and several others were at a
drive-in movie from 2115 to 2240 hours on April 20, 1952, during which
time they saw several groups of objects fly over. There were from two to
nine objects in a group and there were about 20 groups. The groups of
78
TV- , "

Cases discussed

About this file

Analysis, from the classic collection. 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.