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Case FileNARA NAID 28937744 · T1206 Roll 7

Project Blue Book Case File

Sioux City Municipal Airport, IowaMarch 1950

Insufficient Data

Summary

Project Blue Book, the U.S. Air Force's 22-year UFO investigation program, opened a case file on a sighting reported from Sioux City Municipal Airport, Iowa in March 1950. The full case file (5 scanned pages of witness statements, Air Force memoranda, and investigator notes) is reproduced below as held by the National Archives. The Air Force assigned this case to its broader investigation of unidentified aerial phenomena alongside ~12,600 other reports filed between 1947 and 1969. Citation: NARA Record Group 341, Microfilm Publication T1206, Roll 7.

Reported location

Sioux City Municipal Airport, Iowa

Date of incident

March 1950

State / country

IA / US

Page count

5 scanned pages

USAF evaluation

unknown

Microfilm

T1206, Roll 7

Original case file scans

Original case file · scanned by NARAPage 1 of 5
Transcribed text
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i 11. DATE « TIME GROUP 2, “YP ¢ )
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| \ 30 arch 50 20/1810z Sioux City Municipal Airnort, Iowa
: 3 SOURCE - 10, CONCLUSION
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| 1dlitary Other (Debris in air)
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l4. NUMBER OF OBJECTS |
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) is. LENGTH OF OBSERVATION 1 BRIEF SUMMARY AND ANALYSIS |
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© | Not Reported Eright white object trailing a Tub A/Cs Flickt was above and 23h
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! F VATION behind the A/C in a diredtion from Fast to West, Size was estina
| j6. TYPE OF OBSER to bo absub 1/4 the sizo of tho tail of ths A/C. After following
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g rapidly. Shaped like a small Faraciute., No noise trad or exh ug
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Source: National Archives Catalog · NAID 28937744

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