Declassified UFO / UAP Document
PROJECT 10073 RECORD CARD — Brasilia, Brazil, 9 November 1958
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AI-Generated Summary
A sighting of an unidentified object by 500 people in Brasilia on November 9, 1958, prompted an investigation by the Brazilian Air Force. The military pilot could not identify the object, and official records concluded there was insufficient data for analysis.
On November 9, 1958, at approximately 16:00 local time, an unidentified object was observed by an estimated 500 people in Brasilia, Brazil. The sighting was reported as a 'flying saucer.' In response to the event, a Brazilian Air Force (FAB) aircraft was dispatched to investigate. The pilot ascended to an altitude of 3,000 meters but was unable to obtain additional data or intercept the object. Upon returning to base, the pilot reported that the object appeared to be at an altitude of approximately 12,000 meters, or 35,000 feet. The official record card for Project 10073 notes that the object remained in the area for some time, though no specific motion was reported. The evaluating agency concluded that while the object might have been a balloon, the available information was insufficient to support a definitive conclusion or to perform a comprehensive analysis. The incident was also documented in an FBIS Latin America report dated January 2, 1959, which reiterated that the FAB plane commander found no results during the investigation.
Unidentified object thought to be a flying saucer observed by 500 people.
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Official Assessment
Probably a balloon but data is not sufficient to support this conclusion.
The object was observed by approximately 500 people. A Brazilian Air Force (FAB) aircraft ascended to 3,000 meters to investigate but returned to base without results. The pilot estimated the object's altitude at 12,000 meters (approximately 35,000 feet). The report notes that while the object might have been a balloon, there is insufficient data to confirm this or to conduct a full analysis.
Key Persons
- FAB plane commanderPilot who investigated the object