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USAFMay 5, 1955Project Blue Book — Statistical Studies (Special Report 14)
Project Blue Book — Special Report No. 14 (1955)
Summary
This report, produced by the Battelle Memorial Institute for the USAF in May 1955, analyzes 3,201 UFO cases investigated by Project Blue Book and earlier programs. It classifies the cases as known, unknown, or insufficient information, concluding that 22 percent of the cases remained unidentified. The report provided statistical support for the USAF's position that UAP were not a national security concern.
Key highlights
The study concluded it is highly improbable that sightings represent unknown technological developments.p.8
“it is considered to be highly improbable that reports...represent observations of technological developments.”
Statistical analysis revealed no significant patterns in the sightings data.p.24
“no trends, patterns, or correlations are to be found.”
The majority of reports were from serious observers, despite some being from unreliable sources.p.11
“a high percentage of them was submitted by serious people.”
Source
View on Battelle Memorial Institute under USAF Contract — Special Report 14 →More from USAF
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- Jeffrey Nuccetelli — Written Statement (House Oversight UAP Whistleblower Hearing, Sept 2025)