Operation Prato, or Operacao Prato, was a Brazilian Air Force field investigation run through the First Regional Air Command, I COMAR, after reports of luminous bodies and alleged beam injuries spread through Colares, Vigia, Baia do Sol, Mosqueiro, and other communities in Para during 1977.123 The operation sits between a local panic known as chupa-chupa and a formal military record set: residents, clergy, doctors, journalists, intelligence officers, and Air Force personnel all became part of the documentary trail.234
The strongest official spine is archival rather than explanatory. The Arquivo Nacional identifies its OVNI fund, BR DFANBSB ARX, as material produced by the Comando da Aeronautica and composed of reports, questionnaires, correspondence, photographs, drawings, videos, audio, and press clippings on unidentified objects seen over Brazil.1 A separate Arquivo Nacional notice says the public collection can be consulted through SIAN, while a Ministry of Justice notice describes the same UFO holdings as one of SIAN's most accessed record groups.15
Origin and Mandate
The immediate trigger was the Amazon-coast wave of reports in which people described lights, "corpos luminosos", and beams associated with fear, illness, burns, or puncture marks.34 Near-primary document inventories place the first mission from 20 October to 11 November 1977, followed by a second mission from late November into early December and later monitoring during 1978.3
I COMAR's February 1979 forwarding memo gives the clearest official mandate after the fact. Brigadier Protasio Lopes de Oliveira sent the Chief of the Air Staff a collector folder containing 130 records of OVNI observations from 2 September 1977 through 28 November 1978, catalogued by I COMAR's Second Section.2 That memo frames Operation Prato less as a public-facing scientific program than as a regional intelligence and reporting effort feeding the Estado-Maior da Aeronautica.2
Field Organization
The investigation is most closely associated with Captain Uyrange Bolivar Soares Nogueira de Hollanda Lima, but the surviving record points to a broader I COMAR/A2 field apparatus involving Second Section personnel, military informants, civilian witnesses, and other intelligence channels.234 The document guide maintained by Operation Prato researchers separates the available corpus into official FAB/CENDOC records, SNI/GSI records, and leaked mission reports, which is a useful caution because not every widely circulated page has the same custody history.3
The official and near-primary files show a field method built around witness interviews, location checks, sketches, observation logs, press monitoring, and later tabulation.263 The military files also preserve the social setting of the case: isolated river and island communities, heavy press amplification, frightened residents, and local authorities seeking help from military institutions.34
Records and Evidence
The declassified official record does not settle what caused the luminous-object reports. It does, however, establish that the Air Force treated the flap as serious enough to collect a structured file, continue monitoring into 1978, and preserve a large record package in the national archive system.126
Timeline
Findings and Cautions
Operation Prato is historically important because it was a real military field investigation of a civilian UAP flap, not merely a later ufological reconstruction.263 Its official record supports the existence of a structured I COMAR investigation, a 130-entry observation register, and long-running official custody through FAB-CENDOC and Arquivo Nacional.126
The evidence is uneven beyond that point. Claims about photographs, films, injuries, extraordinary performance, and nonhuman interpretation come through a layered record of official summaries, intelligence files, leaked reports, press coverage, and later interviews.893 The CMRI decisions are especially important because they show that later citizens asked for the original report, photos, images, and films, while Brazilian authorities answered that available OVNI material had been sent to the Arquivo Nacional or that the requested items were not held in the form described.89
For that reason, the best reading of Operation Prato is disciplined but open: the program is well documented as a Brazilian Air Force investigation, yet the public record remains incomplete and does not provide an official final explanation for the Colares/Para flap.2893