Documents / Official release
This Air Materiel Command file, released by the U.S. Department of War, holds Incident Summary Sheets 173 through 233, sent under a 1949 transmittal. Most of the sheets record sightings of unidentified aerial objects in 1948 and early 1949. They cover Santa Fe, New Mexico, San Pablo, California, Honolulu, Kentwood, Louisiana, and Jackson, Mississippi. Each sheet gives the observer's details and the object's size, speed and shape, and often an investigator's note on how reliable the witness seemed. The file ends with a blank guide for investigating reports, including radar sightings.
From the source:Release of 2026-05-08 Incident: N/A, N/A. NARA Record Group 38, catalogue id 143685. Each of these incident summaries includes a "Check-List - Unidentified Flying Objects" that contains details about the incident. Many summaries also include witness lists or statements and other narrative reports or descriptions.
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1. Date and Time of Observation: 6 Nov 1948 1157 hrs 2. Where Sighted: Immediately above Radar Site at Makkunai, Japan 3. Observer's Position: Ground - operating radarscope (i.e., ground, air, control tower, etc.) b. Name and Address of Observer: I/8 5. Occupation and/or hobbies: Radarscope operator 6. Attention Attracted by: slip on the radarscope 7. Number of Object( ) Seen: Target at first appeared as single craft and at times as 2 aircraft 2. Size of Object(s): normal for aircraft on radarscope 9. Color of Object(s): N/s (Object was not observed visually at any time) 10. Shape (Sketch if Possible) 11. Nature of Luminosity: B/S (directed beam of light?) 12. Altitude of Object: Unknown (estimated) 15. Estimated Distance of Object from Observer: Could not be estimated 24. Estimated Speed of Object: Varying - from 160 miles to 240 miles per hour 15. Time in sight: Circled radar site continuously for one hour and 5 minutes 16. Tactics: Target at times gave impression of 2 fighter aircraft dog-fighting. Continuously changed course. 17. Sound made by Object(s): 18. Direction of Flight of Object(v) Ciraling 19. Apparent Construction: X/S 20. Effect on Clouds: 2/3 11. Exhaust Trail Color of): x/8 22. manner of Disappearance: 2/8 23. Weather Conditions at Time of Sighting: Low & high cloud formation forming very dense overcast of unknown height. 24. Peculiarities Noted: Slip at times appeared single and at times gave appearance of 2 aircraft in vicinity 25. Summary of Incident: (over) (See attached page)
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Official release, from the pursue collection. The PDF is mirrored here; the original link is above. The text was read from the page images by GLM-OCR; expect the odd misread word. 144 pages are in the text index: search them above, or from the library's search.