CIA-UAP-015, Project Blue Book Special Report No. 14 (Analysis of Reports of Unidentified Aerial Objects)

This CIA archives copy, released in 2026, holds Project Blue Book Special Report No. 14 (Analysis of Reports of Unidentified Aerial Objects). The Air Technical Intelligence Center at Wright-Patterson Air Force Base issued it on 5 May 1955. The study reduced about 4,000 sighting reports from 1947 to 1952 to IBM punched cards, with 3,201 cases charted, and applied chi square tests to compare known and unknown sightings. It concludes that it is highly improbable the reports represent technological developments beyond present-day scientific knowledge.

From the source:Release of 2026-06-12 This is the USAF Project Blue Book with a CIA cover sheet stating the document is "Official Record Copy." With the exception of the handwritten note on the first page, the content of this document has been available on CIA's public website.

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I Case VII (Serial 2728. 00}
I A Flight Sergeant saw an object over an Air Force base in Korea at
0842 hours on June 6, 1952. The object flew in a series of spinning and
I tumbling actions. It was on an erratic course, first flying level, then
I stopping momentarily, shooting straight up, flying level and again tumbling,
then changing course and disappearing into the sun. It reappeared and was
seen flying back and forth across the sun. At one time an F-86 passed
I between the observer and the _object. He pointed it out to another man who
saw it as it maneuvered near the sun.
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I Black lines evenly spaced Proportion 7 to 1
I (Dimensions are as
shown in observer's
original drawing)
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I 83
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