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Archive case record

San Juan, Puerto Rico, April 1953

Date of account
1953-04
Location
San Juan, Puerto Rico
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

1.DATE·TIME GRCUP 2.LOCATION 6Apx115308/1530z Sn Juan, Puerto Rioo 3. SOURCE 10.CONCLUSION alitary BAILOON Charaet of a weather balloon.Ineporioncod observer. 4.NUMSET OALECTS Snarks could be cansed sun refleeting on instnirnts attach Cne tho balloon. One rcdiosonde balloon released at San Juan, S.LENGTH OF OBSERVATION 11. BRIEF SUAMARY AND ANALYSIS thn an aircreft 10 lirutes One hito light as seen st a high altbade， hiher than B-36 a/e in the ares at the tire: 6.TYPE OF OBSERVATION It novd froi: to and diseppeared upwa rdl. Moved at high speed. Sperks could Groud-Visual ce306n the objeet.It had a spinning or waving 7.COURSE cotion. Object lost in close prozinity to sin. Bast and Sooth 8.PHOTOS OY.. 9.PHYSICAL EVIDENCE OY XOKNo FORM FTD sEP 63 0-329 (TDE) Provlous odiuono of thls form moy bo usod.

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