Diplomatic Cable, Brazil, November 20, 1963
🏛️ Department of State
This document is a U.S. Department of State diplomatic cable from the U.S. Embassy in Rio de Janeiro, Brazil to the Office of the Secretary of State in Washington, D.C., on November 20, 1963. This cable relays the findings of the scientific attaché at the American Consulate in Salvador, Bahia, Brazil, that a widely reported incident allegedly involving a crashed unidentified object was unsubstantiated, characterizing the reports as a fabrication originating in Rio de Janeiro. The Consulate cites a lack of contemporary local reporting regarding the alleged incident, as well as contradictory reporting from local newspapers after the fact, as evidence that the published claims are unsubstantiated. The Consulate also cites a statement from the Brazilian Ministry of Aeronautics categorically denying that there was “any “strange object” in Conde [Bahia].” This correspondence follows a previous exchange between the Embassy and the Department of State, included in this collection under the title “DOS-UAP-D001.”
Key points
- 🏛️ Official U.S. government release — batch 5 (Aug 7, 2026)
- Official file: DOS-UAP-D002
- When: 11/20/1963
- Where: Bahia, Brazil
📖 In the encyclopedia
Read it yourself
The description above is the government’s own, from the official release. The official file is linked on this page.
Department of State. (1963). Diplomatic Cable, Brazil, November 20, 1963. https://www.war.gov/medialink/ufo/release_05/Aug_07/documents/DOS-UAP-D002_Diplomatic-Cable_Brazil_November-20-1963.pdfRelated records
Diplomatic Cable, Brazil, November 14, 1963
Department of State
This document is a U.S. Department of State diplomatic cable from the U.S. Embassy in Rio de Janeiro, Brazil to the Office of the Secretary of State in Washington, D.C., on November 14, 1963. This cable documents an effort by the Embassy to verify that the Department had assessed certain content published in a local newspaper as inauthentic, following a discussion on a poor-quality telephone connection the previous night. To ensure both offices were referencing the same reporting, the cable cites descriptive language paraphrased from the press, namely a “large metal manned balloon” and a “dead crewman aboard wearing [a] uniform or spacesuit with strange markings.” The cable concludes with the embassy’s understanding that an object assessed to be a weather balloon had been reported in the vicinity, but that no such object had been found to have crashed. A follow-on correspondence regarding the alleged incident is included in this collection under the title “DOS-UAP-D002.”
NASC Inquiry into Bahia, Brazil Incident, November 13, 1963
Executive Office of the President
This document is a Central Intelligence Agency (CIA) Foreign Broadcast Information Service (FBIS) wire report dated November 9, 1963, tracking a local Portuguese-language radio broadcast from Rio de Janeiro, Brazil, regarding an alleged crash of a “large metal sphere” containing a deceased occupant in Conde, Bahia, Brazil. This FBIS report is excerpted from the files of Edward C. Welsh, Executive Secretary of the National Aeronautics and Space Council (NASC). NASC was a cabinet-level advisory body within the Executive Office of the President responsible for coordinating U.S. space policy from 1958 to 1973. Handwritten annotations dated November 13, 1963, document a communication between officials at NASC and the U.S. Department of State. The note records a NASC request to a State Department official to query the U.S. Embassy in Rio de Janeiro for local verification of the reporting. This inter-agency request precedes a subsequent diplomatic cable sent by the Embassy the following day, cataloged in this collection under the title “DOS-UAP-D001.”
Unidentified Flying Object Reported near Puerto Rico, 1965
CIA
This file contains Central Intelligence Agency (CIA) memoranda exchanged between the Assistant Director for Special Activities (AD/SA) and the Assistant Director for Scientific Intelligence (AD/SI) regarding an incident allegedly involving unidentified aircraft in the vicinity of Puerto Rico. The AD/SI was then-responsible for analyzing foreign scientific advancements and technological threats, such as Soviet nuclear, chemical, and ballistic missile capabilities. The AD/SA managed the CIA’s classified overhead reconnaissance operations, including the deployment of advanced aircraft like the U-2 and A-12 OXCART. Together, these offices ensured the United States could both gather critical intelligence over contested territories and accurately evaluate the technical capabilities of foreign adversaries during the Cold War. The memoranda refer to an incident on November 19, 1964, in which a U.S. Naval aviator described observing an unidentified object as “delta-shaped, about the size of a jet fighter.” The pilot visually estimated the object’s velocity as Mach 3 (approximately 2,200 mph). A corresponding track from an AN/SPS-49 radar system aboard a U.S. Navy guided missile destroyer in the area, USS Gyatt, measured the object’s speed at 3,800 knots (approximately 4,373 mph). The memoranda indicate that, in the opinion of the AD/SI, the object was conceivably associated with foreign intelligence gathering activities, citing active missile testing within the AFWR, or Atlantic Fleet Weapons Range, as being an attractive reconnaissance target. The AD/SA and AD/SI also ruled out domestic experimental aircraft, such as the YF-12A OXCART, as a potential attribution.
59 214434 SP 16 [7.18.1963]
Department of State
This memorandum, dated July 18, 1963, from the Executive Office of the President, National Aeronautics and Space Council, relates to thoughts on the space alien race question. Included are details relating to plans if alien intelligence is discovered, expanding scientific knowledge, the possibility of life on Mars, and diplomatic policy.