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Archive case record

Sakhalin, Japan, February 1951

Date of account
1951-02
Location
Sakhalin, Japan
Source
uap_archive
Record updated
2026-10-10

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Record summary

Project Blue Book case file indexed from National Archives metadata; page-level review pending.

Published source text

Read the available text below. Archive transcriptions may contain OCR errors; later context is labelled separately. A recorded claim is not a finding that it happened.

Source page 1

Source text · mention only

PROJECT 10073RECORDCARD 1.DATE 2.LOCATION 12.CONCLUSIONS 口 Was Balloon 21.-22Feb51 Sakhalin,Japan Probably Bolloon 口 Possibly Balloon 3.DATE-TIME GROUP 4.TYPEOF OBSERVATION Local _Night .Ground-Rodar Ground-Visual Was Aircrcfr 口 Probabiy Aircraf! Air-Visuai Air-lntorcept Radar 口 Possibly Aircraf! GMT. 5.PHOYOS 6.SOURCE 口 Was Astronomicai OYos 口 PraboblyAstronomical YNo Military 口 Possibly Astronomicai 7.LENGTH OF OBSERVATION 8.NUMBER OF OBJECTS 9.COURSE 口 Othsr. 口 InsufficientData forEvoluation 口 Unknown 1 or2each track Varied 10. BRIEF SUAMARY OF SIGHTING 11.COMMENTS 10 Tracks of unidentified A/c picked upp on Identified as USSR Tracks by ADC. Ground Radar.Speeds varied from 150-500 ATICFORM329(REV26SEP52)

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