What did the declassified documents reveal?

Document Title: Airport Rio de Janeiro-Brazil, May 30, 1952 Agency: Air Technical Intelligence Center Date: May 30, 1952 This is a declassified document from the Air Technical Intelligence Center, detailing a UFO sighting at the International Airport of Galeao in Rio de Janeiro, Brazil. The document is part of the Project 10073 Record Card series, which was released through The Black Vault. The document was released through The Black Vault, a non-profit organization dedicated to declassifying government records. The canonical PDF is available at archive.org. PROVENANCE The document was released through The Black Vault, a non-profit organization dedicated to declassifying government records. The document is part of the Project 10073 Record Card series, which was released through The Black Vault. THE DOCUMENT PROJECT 10073 RECORD CARD Z VOCATION Airport Rio de Janeiro, Brazil, May 30, 1952. DATE-TIME GROUP L[e]l GMT 14:30: PHOTOS 0 Y[es] AN 7. LENGTH OF OBSERVATION 10 minutes. TYPE OF OBSERVATION [four lines redacted under exemption B1]. NUMBER OF OBJECTS 1. COURSE 12. CONCLUSIONS [four lines redacted under exemption B1]. BRIEF SUMMARY OF SIGHTING [four lines redacted under exemption B1]. COMMENTS [four lines redacted under exemption B1]. The original document reads: HoYorod then moved near horizon then moved slowly Returned to original spot and really took off Done—- too little information so % 4 0 s • ^ 0 ATtC rORU 33 CRBV 30 OEP S3) p w The document was written by an Inspector of the Aeronautic Civil of Brazil, who reported observing a long, thin, blue-gray object with a rounded shape, which remained stationary for approximately 10 minutes. The object then moved slowly to the right, disappearing in a rapid and indescribable manner. CONTEXT The document is part of the Project 10073 Record Card series, which was released through The Black Vault. The document was written by an Inspector of the Aeronautic Civil of Brazil, who reported observing a UFO at the International Airport of Galeao in Rio de Janeiro, Brazil. OUTRO This is what the public record looks like at its most ordinary. The document provides a glimpse into a UFO sighting in Brazil in 1952. For more information, visit storyflo.com and the canonical PDF at archive.org.

Why was this case declassified?

This material was released by the Central Intelligence Agency (CIA) through the U.S. declassification and Freedom of Information Act (FOIA) process. The originating source document is linked on this page so the citation chain is auditable.

1952 05 9613619 Airportriodejaneiro Brazil

◆ BLUF — The short version

Document Title: Airport Rio de Janeiro-Brazil, May 30, 1952 Agency: Air Technical Intelligence Center Date: May 30, 1952 This is a declassified document from the Air Technical Intelligence Center, detailing a UFO sighting at the International Airport of Galeao in Rio de Janeiro, Brazil.

Agency: Central Intelligence Agency (CIA)
Date: JUL 18 · 2026
Release: Declassified · U.S. public record (FOIA)
Source document: View the primary source documenthttps://archive.org/details/1952-05-9613619-AirportRiodeJaneiro-Brazil

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Source document: https://archive.org/details/1952-05-9613619-AirportRiodeJaneiro-Brazil

Questions about this case

What was 1952 05 9613619 Airportriodejaneiro Brazil about?: Document Title: Airport Rio de Janeiro-Brazil, May 30, 1952 Agency: Air Technical Intelligence Center Date: May 30, 1952 This is a declassified document from the Air Technical Intelligence Center, detailing a UFO sighting at the International Airport of Galeao in Rio de Janeiro, Brazil.
Why was this case declassified?: This material was released by the Central Intelligence Agency (CIA) through the U.S. declassification and Freedom of Information Act (FOIA) process. The originating source document is linked in the case notes above so the citation chain is fully auditable.

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1952 05 9613619 Airportriodejaneiro Brazil

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