Brazil's Official Night of UFOs

Theoretical Alignment

The Official Night of UFOs is unusual in this catalogue for how much of its weight rests on institutional, not popular, testimony: the account that carries the case is not a crowd of frightened civilians but named fighter pilots, air traffic controllers, a decorated aviation executive, and ultimately the Minister of Aeronautics himself, publicly declining to offer any conventional identification. That combination pushes the Extraterrestrial Hypothesis score meaningfully higher than most radar-visual cases in this archive, without approaching certainty, because no photograph, recovered fragment, or unambiguous instrument trace corroborates any pilot's account beyond his own cockpit tape and memory. The Psycho-Social Hypothesis is scored modestly rather than dismissed, reflecting the genuine national media excitement the case generated in the days after May 19 — sensational headlines, a nickname ("the flying saucer festival") drawn from a tower operator's own radio quip, and considerable pressure on the Ministry to say something definitive by May 23. The core military witnesses, however, were on duty in separate cockpits and control rooms. The Interdimensional Hypothesis finds essentially no support in the documentary record; nothing in any pilot or controller account describes anything resembling a dimensional transition, only sudden, extreme changes in apparent velocity and heading.

Background

By May 1986, Brazil's Air Force had spent nearly a decade with unusually direct institutional exposure to the UFO question. Operação Prato, the FAB's official 1977 investigation into the Colares wave, had already produced hundreds of photographs, hours of Super-8 film, and, per its own commanding officer's later account, converted skeptical intelligence officers into believers after they personally observed low-altitude craft over the Amazon delta — though that program's findings were still classified in 1986 and became widely known only after Captain Hollanda's 1997 interview with Ademar Gevaerd and Marco Petit. Brazil in May 1986 was also a country in the middle of a fragile democratic transition: President José Sarney had taken office barely a year earlier following the death of president-elect Tancredo Neves, ending more than two decades of military rule, and the armed forces — including the Air Force — still held substantial institutional weight and public visibility even as civilian government reasserted itself. Brazil's air defense infrastructure was, by regional standards, genuinely sophisticated: the Integrated Center for Air Defense and Air Traffic Control (CINDACTA I), headquartered in Brasília, had been operational since the 1970s specifically to give the FAB continuous radar coverage of the country's most strategically important southeastern airspace — exactly the region, encompassing São Paulo's industrial heartland, Rio de Janeiro, and the Paraíba Valley aerospace corridor, that would fill with unidentified returns on the night of May 19.

It was against this backdrop — a military still culturally accustomed to taking aerial anomalies seriously as a matter of national air-defense procedure, a recently reopened civilian press eager to report on anything extraordinary after decades of dictatorship-era censorship, and a capable integrated radar network — that Sergeant Sérgio Mota da Silva, on duty in the control tower at São José dos Campos Airport, began watching strange lights shortly after 18:30 on the evening of May 19, 1986.

Complete Timeline

Date	Event
1977	The Brazilian Air Force runs Operação Prato, an official military investigation into the Colares "Chupa-Chupa" UAP wave in Pará — an institutional precedent for taking 1986's events seriously.
March 15, 1985	José Sarney is sworn in as acting president after president-elect Tancredo Neves is hospitalized before his scheduled inauguration.
April 21, 1985	Tancredo Neves dies; Sarney becomes Brazil's first civilian president in 21 years in his own right.
May 19, 1986, ~18:30	Sergeant Sérgio Mota da Silva, on duty in the control tower at São José dos Campos Airport, São Paulo, begins watching a red-orange light entering from the northwest sector near Guarulhos, using binoculars and radar (Portal Vigília, from the 2015 audio release).
~19:00–20:15	São José dos Campos reports primary radar targets and CINDACTA reports up to eight targets around 20:00 (Gross). Around 20:00 Brasília calls the São José tower and Mota da Silva answers: "Welcome to the flying saucer festival." The total eventually cited is 21.
~21:08	An EMB-121 Xingu (PT-MBZ) inbound from Brasília to São José dos Campos, carrying Ozires Silva and Alcir Pereira, reports bright red lights; the crew breaks off its approach to try to close on them, makes repeated landing attempts, and lands around 21:30.
~21:39	Santa Cruz Air Force Base goes on alert for unidentified radar plots around São José dos Campos.
22:23–22:34	The first F-5E, flown by Lt. Kleber Caldas Marinho, is scrambled and takes off from Santa Cruz Air Force Base, Rio de Janeiro, at 22:34.
22:48–22:50	The first Mirage III, flown by Capt. Armindo Sousa Viriato de Freitas, takes off from Anápolis Air Force Base, Goiás (22:48); the second F-5E, flown by Capt. Márcio Brisolla Jordão, takes off from Santa Cruz (22:50).
~22:50–23:15	Guided by Anápolis approach radar, Viriato closes to about one nautical mile of a radar target, which then vanishes and reappears farther away. He has no visual contact.
~22:40–23:30	Lt. Kleber reports a radar contact and a white light 10–12 miles ahead that changes to red and green and climbs to about 33,000 ft; the target heads out toward the Atlantic and he returns at minimum fuel.
23:17–23:36	Capt. Jordão sees a red light that goes out as he approaches; later the controller reports 13 radar plots behind his F-5E, and when he turns 180 degrees he sees nothing. Mirages flown by Capt. Rodolfo da Silva Souza (23:17) and Capt. Júlio Cézar Rozenberg (23:36) take off from Anápolis.
~23:30–01:00, May 20	Contacts continue intermittently, with recurring mismatches between what pilots could see and what their radar or ground radar registered.
~01:00, May 20	The fighters are back at base and the detections end; the minister later gave the window as roughly 20:00 to 01:00.
May 20–22, 1986	News of the intercepts breaks in the Brazilian press.
May 23, 1986, 16:30	Moreira Lima holds a press conference at the Ministry of Aeronautics in Brasília, with the five pilots, the controllers on duty and CODA chief Major Ney Antônio Cerqueira; he promises a full report within 30 days.
June 2, 1986	Interim Air Defense Command chief Brigadier José Pessoa Cavalcanti de Albuquerque signs the FAB report, which concludes that the phenomena "are solid and reflect, in a certain way, intelligence," since they could keep their distance from observers and fly in formation, and were "not necessarily manned."
September 10, 1986	In Veja, Brig. Cavalcanti rejects the space-debris explanation: "It could have been space debris, but it wasn't only that" (quoted by Gross).
1993	Capt. Armindo Sousa Viriato de Freitas, interviewed on TV Globo's Globo Repórter, estimates one target's peak escape velocity at roughly Mach 15 — a figure not present in any 1986 radar log and drawn entirely from his own recollection nearly seven years later.
2004–2005	Revista UFO editor Ademar Gevaerd leads the "UFOs: Freedom of Information Now" campaign; on May 20, 2005, the Air Force receives a committee of ufologists in Brasília and lets them examine UFO files at CINDACTA I and COMDABRA.
September 25, 2009	The June 2, 1986 report is declassified and released through Brazil's National Archive, 23 years after Moreira Lima promised a report within 30 days.
October 22, 2015	After a request by researcher Edison Boaventura Júnior, Brazil's National Archive makes 16 audio tapes public through its SIAN system; eight cover May 19, 1986, and the set runs to just under 13 hours (Portal Vigília).
May 22, 2016	TV Globo's Fantástico airs an extended 30th-anniversary retrospective built around the newly released audio recordings.
January 2022	BBC News Brasil publishes a long retrospective with new interviews, including Sérgio Mota da Silva, who says the number of objects seen that night "was much higher than 21."

The First Sightings at São José dos Campos

The night's documented record begins with a single air traffic controller doing his job. Shortly after 18:30 on May 19, 1986, Second Sergeant Sérgio Mota da Silva, on duty in the control tower at São José dos Campos Airport in the Paraíba Valley of São Paulo state, began watching what he called a "farolzinho" (a little light), red-orange, entering from the northwest sector near Guarulhos about three degrees above the horizon, using binoculars and his radar (Portal Vigília, drawing on the tapes released in 2015). Accounts give different times for the escalation: Patrick Gross's compilation has the tower reporting three primary radar targets around 19:00 and CINDACTA up to eight targets around 20:00, and the Wikipedia summary has Mota da Silva seeing three bright lights hovering at about 20:15, which turned red, yellow, green and orange and seemed to approach when he dimmed the runway lights. Around 20:00 Brasília called his tower, and he answered: "Brasília? Boa noite! Bem vindo ao festival dos discos voadores" ("Brasília? Good evening! Welcome to the flying saucer festival"). At one point the tower counted 13 objects; the total later cited was 21. Mota da Silva told BBC News Brasil in 2022 that "the number of objects sighted that night was much higher than 21," and he added that the Air Force counted only sightings that had simultaneous radar and visual confirmation (gov.br).

Ozires Silva's Xingu Sighting

At about 21:08 the case acquired its most prominent civilian witness. An Embraer EMB-121 Xingu twin-turboprop, registration PT-MBZ, was inbound from Brasília to São José dos Campos carrying Ozires Silva, the founder of Brazil's aircraft manufacturer Embraer, who was returning from a meeting with President José Sarney and was due to take over as president of the state oil company Petrobrás. Sources differ on who was flying: BBC News Brasil (2022) and the Wikipedia summary say Silva himself was at the controls with Alcir Pereira as co-pilot, while Patrick Gross and Portal Vigília describe Pereira as the commander. The crew reported bright red lights east of the airport, and Silva later described them as "big red stars." With Brasília's authorization and the tower's guidance, the Xingu broke off its approach, turned 180 degrees and tried to close on the lights. Gross puts the chase at about 25 minutes and says the aircraft made three landing attempts before landing at São José dos Campos around 21:30. According to BBC News Brasil, Pereira, visibly frightened, warned that "everyone who tries to chase something like that ends up disappearing." Silva described the target as a "luminous point" and "very huge," and he has said he had never seen anything like it.

The F-5E Interceptions from Santa Cruz

At about 21:39 Santa Cruz Air Force Base, outside Rio de Janeiro, went on alert for unidentified radar plots around São José dos Campos, and the Air Defense Operations Center (CODA) decided to scramble fighters. The first F-5E Tiger II of the 1st Fighter Group (callsign JB17 in the Wikipedia summary) was scrambled at 22:23 and took off at 22:34 under Lieutenant Kleber Caldas Marinho. According to the Revista Asas account, he flew at Mach 0.7 with his lights off and saw a white light that sometimes turned red and green; when he lit his afterburner and accelerated to Mach 0.95, the radar showed the target turning abruptly toward the Atlantic. The Wikipedia summary has the light climbing to about 33,000 ft while staying 10–12 miles ahead; his closest approach was about 18.5 km, and he turned back at minimum fuel. He asked whether a foreign aircraft carrier was off the coast (BBC News Brasil). Asked about the experience, he said: "I wasn't afraid because I like the unknown" (quoted by Gross). The second F-5E took off at 22:50 under Captain Márcio Brisolla Jordão. He found many stationary radar contacts and saw a red light near São José dos Campos that disappeared as he approached, and his radar showed diagonal lines over the Paraíba Valley that cleared when he left the area (Revista Asas). Later the controller reported numerous plots "at six o'clock" (behind his aircraft); BBC News Brasil says 13 were on the radar, seven on one side and six on the other. When Jordão turned 180 degrees, he saw nothing.

The Mirage III Interceptions from Anápolis

More than 800 km to the northwest, three Dassault Mirage III interceptors (FAB designation F-103E) took off from Anápolis Air Force Base in Goiás after Anápolis reported radar echoes west of the base around 22:09. CINDACTA's operations center did not see these contacts. The first, at 22:48, was flown by Captain Armindo Sousa Viriato de Freitas (callsign Jaguar 116). Working only from the Anápolis approach radar, he closed to about one nautical mile of a contact, which then vanished and reappeared about 23 km away. He had no visual contact (Revista Asas; Wikipedia). On the released tapes, the controller tells him that other intercepts showed the same pattern: "there's a contact, you get close to the contact, and it increases the distance" (as quoted on Metabunk). In a 1993 Globo Repórter interview, nearly seven years later, Viriato estimated that one target accelerated to about Mach 15: "If there is a plane that can reach that speed, I'm not aware of it" (BBC News Brasil). That figure is a later estimate, not a value from any released 1986 radar record. Captain Rodolfo da Silva Souza took off at 23:17. Revista Asas says he could see the ground but not the target, which repositioned behind him or passed over or under the Mirage whenever he maneuvered, and a controller on the tapes reports a plot "always at your 6 o'clock." Captain Júlio Cézar Rozenberg took off at 23:36. Revista Asas says he relied only on the Anápolis approach radar, got within about 1.8 km of a target and saw nothing. The sources disagree about these two sorties: BBC News Brasil says Souza and Rozenberg had no visual or radar contact at all, and the Wikipedia summary says the later Mirages reported no further contacts.

Radar Ghosts, Interference, and Contradictions

What distinguishes this case from a simple "jets chased lights" narrative is how openly the participants described its inconsistencies. Sergeant Mota da Silva later summarized the pattern: "Sometimes the pilots had visual contact with the targets, but the radars recorded nothing," and at other times the radar picked up objects the pilots could not see (BBC News Brasil; gov.br). Some contacts appeared on the Anápolis approach radar but not on CINDACTA's screens. Revista Asas also notes equipment malfunctions reported both in the fighters and at the CINDACTA I operations center, and Jordão's radar showed diagonal lines over the Paraíba Valley. These could be genuine interference or an equipment fault, and the released record does not settle which. At the May 23 press conference, CODA chief Major Ney Cerqueira said, "The appearance and disappearance of these objects on the radar screens are unexplained," and added that "the Air Force has not closed the case" (quoted by Gross). The open admission of instrument confusion matters both ways. It argues against every report being a simple radar phantom with nothing visible behind it, and it also undercuts any claim that the radar returns alone prove physical objects with fixed positions.

The May 23 Press Conference in Brasília

At 16:30 on May 23, 1986, Minister of Aeronautics Brigadier Octávio Júlio Moreira Lima held a press conference in Brasília, attended by the five fighter pilots and the controllers on duty (gov.br). According to Gross's compilation, he said that at least 20 objects had been detected by Brazilian radar between about 20:00 on May 19 and 01:00 on May 20. He also said: "Radar detects only solid metallic bodies and heavy (mass) clouds," and "Radar doesn't have optical illusions." Asked whether the objects were extraterrestrial, he gave the lines that have defined the case ever since: "It's not about believing or not. We can only give out technical information. There are several hypotheses. Technically, I'd tell you gentlemen that we have no explanation." He promised a full report within 30 days, and it did not become public for 23 years. Major Ney Cerqueira, CODA's chief, spoke to the radar contradictions described above. Later retellings say that Brigadier Sócrates da Costa Monteiro, then commanding the IV Regional Air Command in São Paulo and later Minister of Aeronautics (1990–1992), said that the objects jumped from about 240 to 1,500 km/h in fractions of a second and that the Air Force had filmed the events. This file could not trace those remarks to a 1986 newspaper or to the press conference itself, and no such film has been released. Several statements often attributed to the conference could not be confirmed in any source checked, including a claim that the sky was clear, speeds of "3,600 km/h," and the phrase "incredible rapidity." Ozires Silva was a witness aboard the Xingu, not a speaker at the conference.

Silence, Rumor, and the Long Wait for Disclosure

The thirty-day report Moreira Lima promised on May 23 did not appear for a very long time. In Veja on September 10, 1986, Brigadier José Cavalcanti of the Air Defense Command rejected the space-debris explanation then circulating: "It could have been space debris, but it wasn't only that" (quoted by Gross). Later retellings say that the participants were discouraged from discussing the case and that an "electronic warfare" or test explanation was floated. Metabunk posters say Moreira Lima himself mentioned an enemy electronic-warfare tactic as one hypothesis, but this file found no primary record of either claim. In 2004 Revista UFO editor Ademar Gevaerd launched the "UFOs: Freedom of Information Now" campaign. On May 20, 2005, the Air Force received a committee of ufologists in Brasília and let them examine UFO files at CINDACTA I and COMDABRA (Gevaerd's own account, via Patrick Gross). The report dated June 2, 1986 was released on September 25, 2009, through the National Archive, 23 years after it was written (gov.br). On October 22, 2015, after a request by researcher Edison Boaventura Júnior, the National Archive made 16 audio tapes public through its SIAN system. Eight of them cover May 19, 1986, and the whole set runs to just under 13 hours (Portal Vigília). The tapes let the public hear Mota da Silva's "flying saucer festival" call and the pilots' exchanges with ground control for the first time.

Key Witnesses

The Five Observables Assessment

The Five Observables framework, developed by former AATIP director Luis Elizondo, is used to classify UAP encounters by performance characteristics exceeding known technology of their era. Applied to the Official Night of UFOs, the framework returns a genuinely mixed result reflecting the case's unusual combination of strong witness corroboration and internally contradictory instrumentation:

Assessment: Instant Acceleration is rated present because several radar-guided intercepts, and the FAB's own 1986 report, describe targets that varied speed from hovering to supersonic, accelerated or decelerated suddenly, and opened distance as fighters closed. The report summarises the phenomena as able to vary speed from subsonic to supersonic and hover, and to make sharp 90-degree turns. Hypersonic Velocity is rated only speculative, because the case's one hypersonic figure, Captain Viriato's "Mach 15," is an estimate he gave on television in 1993, not a number from any released 1986 radar record. Anti-Gravity Lift is rated speculative: no pilot described any propulsion, but the reported hovering followed by abrupt acceleration is suggestive without being conclusive. Low Observability is rated absent because several of the lights were visually conspicuous, though some radar contacts were never seen at all. Trans-Medium travel is rated absent: no witness described a transition between air, water, or space.

Evidence Assessment

Why "Credible"

The Official Night of UFOs is rated CREDIBLE. The core events are documented by the Brazilian government itself: radar at several sites logged unidentified targets for about five hours, five fighters were scrambled, a tower controller and the crew of a civilian aircraft saw lights, the Minister of Aeronautics said publicly four days later that the Air Force had no explanation, and the Air Force's own report, written in 1986 and released in 2009, called the phenomena "solid" and said they reflected "in a certain way, intelligence." The audio tapes released in 2015 let anyone check the exchanges. The case is not rated Verified because the evidence that anything unusual was physically present is weaker than the popular retellings suggest. Only two of the five pilots reported seeing a light, and their lights did not behave like the radar targets in any documented, measured way. The three Mirage pilots relied on approach radar and saw nothing, and two of them may have had no contact at all. Several radar plots appeared on one radar but not on another, and equipment malfunctions were reported on the night. The most dramatic figures, such as Viriato's "Mach 15," come from interviews years later. No photograph or film has been released. Space debris and radar artefacts were proposed at the time and have not been ruled out for every contact.

Sensor & Instrumentation Detection Profile

This is one of the most heavily instrumented cases in the catalogue by number of detection systems, and also one of the most internally inconsistent. The São José dos Campos tower, Guarulhos, the Anápolis approach radar and CINDACTA I all reported unidentified returns at various times, though not always the same ones: the contacts Anápolis reported around 22:09 were not seen by CINDACTA's operations center, according to the Wikipedia summary. The two F-5Es carried intercept radar. Marinho reported a radar plot together with his light, and Jordão saw many stationary contacts and diagonal lines on his scope. The Mirage pilots were guided largely by the Anápolis approach radar, and Viriato reported a contact that vanished and reappeared about 23 km away as he closed. The case's central sensor problem, described by controller Sérgio Mota da Silva and acknowledged by CODA chief Major Ney Cerqueira, is the mismatch between radar and eyesight: pilots sometimes saw lights the radar did not show, and radar sometimes showed targets the pilots could not see. Revista Asas reports equipment malfunctions in both the fighters and the CINDACTA I operations center that night. No gun-camera film or tower photograph of the objects has been released.

Environmental & Geospatial Context

The weather on the night of May 19, 1986 is not documented in the sources checked; the often-repeated statement that the minister stressed a clear sky could not be confirmed. Geospatially, the case spans one of the busiest stretches of airspace in South America: the Paraíba Valley (Vale do Paraíba) between São Paulo and Rio de Janeiro, home to São José dos Campos's aerospace industry, including Embraer, whose founder was aboard one of the witness aircraft that night. The interceptors launched from opposite ends of a wide triangle: Santa Cruz Air Force Base on Rio de Janeiro's western outskirts, and Anápolis Air Force Base more than 800 km northwest in Goiás, near Brasília. Ground observers at the Air Force's sergeants' school (EEAR) in Guaratinguetá also reported sightings (Revista Asas). Halley's Comet had passed perihelion in February 1986, and debris from the Soviet Salyut-7 station and NASA's Solarwind satellite was discussed in the Brazilian press as a possible cause.

Observer Credibility & Occupational Profile

Few cases in this catalogue concentrate as much on-duty professional testimony into a single night. The five fighter pilots were active-duty Air Force officers scrambled under orders from the Air Defense Operations Center (CODA): Lieutenant Kleber Caldas Marinho and Captain Márcio Brisolla Jordão in F-5E Tiger IIs, and Captains Armindo Sousa Viriato de Freitas, Rodolfo da Silva Souza and Júlio Cézar Rozenberg in Mirage IIIs. Not all of them saw anything, and they reported as much. On the ground, Second Sergeant Sérgio Mota da Silva, the São José dos Campos tower operator whose "Welcome to the flying saucer festival" gave the night its nickname, was a trained controller on duty. The most senior civilian witness, Ozires Silva, was the founder of Embraer and a former Air Force officer and aeronautical engineer, and he saw the lights from his Xingu together with Alcir Pereira. At the institutional level, Minister of Aeronautics Brigadier Octávio Júlio Moreira Lima and CODA chief Major Ney Antônio Cerqueira went on the public record within days. That degree of senior government exposure was not matched in later Brazilian cases such as Varginha.

Physical & Material Assays

No physical specimen, wreckage fragment or trace evidence connected to the May 19 objects has ever been recovered, tested or publicly described. This is a radar-and-eyewitness case, not a physical-evidence case. Its hard record is documentary: the June 2, 1986 report signed by interim Air Defense Command chief Brigadier José Pessoa Cavalcanti de Albuquerque, released through Brazil's National Archive in 2009, and the 16 audio tapes of controller and pilot communications released in 2015. No radiation, burn or biological effect on any witness was reported, which separates this case from more dramatic Brazilian episodes such as the 1977 Colares "Chupa-Chupa" wave.

Historical Precedents & Archive Matches

The Official Night of UFOs did not occur in an institutional vacuum. Nine years earlier, the Brazilian Air Force had already run a sustained, official military UAP investigation of its own: Operação Prato (Operation Saucer), led by Captain Uyrangê Hollanda Lima, into the 1977 Colares "Chupa-Chupa" light-attack wave in Pará state — meaning that by 1986, the FAB already possessed a genuine institutional memory of taking UAP reports seriously enough to scramble resources and open a formal file, rather than dismissing every report on arrival. A decade later, the January 1996 Varginha incident would produce Brazil's better-known creature-encounter case and two further formal Army investigations, but notably took the Brazilian government nearly thirty years to discuss with anything like the openness Moreira Lima brought to the microphone on May 23, 1986. Internationally, the case's radar-visual structure — ground radar, multiple scrambled interceptors, onboard airborne radar, and a persistent radar/visual mismatch — closely parallels the pattern of Cold War-era Western radar-visual flaps such as the 1952 Washington, D.C. flap and the 1957 RB-47 Bomber Chase, though Brazil's choice to hold an open press conference while the case remained unresolved — rather than issuing a delayed, carefully worded press release, as the U.S. Air Force typically did — has no close American analogue in this catalogue.

Material Analysis

No physical specimen, wreckage or trace evidence connected to the May 19, 1986 objects has ever been recovered or publicly described. The case rests on radar returns, eyewitness testimony and the surviving documentary and audio record. Unlike Brazil's other major files, such as the injuries claimed at Colares or the disputed medical claims in Varginha a decade later, it produced no burns, samples or fragments. The closest thing to physical evidence is the typed June 2, 1986 report, now in the National Archive, and the audio tapes released in 2015. The film that Brigadier Sócrates Monteiro reportedly said the Air Force had shot has never been released, so that claim remains unconfirmed.

The Conventional Explanation Candidate: Re-Entering Space Debris

Related Cases

Further Reading — Recommended Literature

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Essential Viewing

Sources

• "1986 Brazilian UFO incident," Wikipedia. en.wikipedia.org
• "Noite dos discos voadores," Wikipédia (Portuguese). pt.wikipedia.org
• CNN Brasil. "Noite dos OVNIs: Brasil já teve caças da FAB perseguindo objetos voadores," February 13, 2023. cnnbrasil.com.br
• Portal Vigília. "Brasília? Boa noite! Bem-vindo ao festival dos discos voadores," November 1, 2015. vigilia.com.br
• Revista UFO / ufo.com.br. "A Noite Oficial dos UFOs no Brasil, 30 anos depois." ufo.com.br
• Government of Brazil (Portal Gov.br). "Official UFO Night in Brazil," 2022. gov.br
• UFO Insight. "The 'Night Of UFOs' — The 1986 Brazilian Air Force Chase." ufoinsight.com
• Gross, Patrick. "UFOs at close sight: Jets chase UFOs over Brazil in 1986." ufologie.patrickgross.org
• UFO Evidence. "Jet Chase Over Brazil — Brazil — May 19, 1986." ufoevidence.org
• Revista Asas / edrotacultural.com.br. "Há 40 anos, FAB caçou alvos na 'Noite Oficial dos Óvnis'." edrotacultural.com.br
• Click Petróleo e Gás (English edition). "The night the Brazilian Air Force hunted UFOs in the sky of Brazil." en.clickpetroleoegas.com.br
• Metabunk. "Brazilian UFO Flap of 1986 — 'Night of Lights' / 'Official UFO Night'" (skeptical discussion thread; quotes portions of the released tapes). metabunk.org
• Arquivo Nacional do Brasil (National Archive of Brazil). Declassified Air Defense Command Occurrence Report, dated June 2, 1986, released September 25, 2009 (PDF). sian.an.gov.br
• Kean, Leslie. UFOs: Generals, Pilots, and Government Officials Go on the Record, Harmony Books, 2010 (general context; not checked for coverage of this case).
• "Ozires Silva," Wikipedia. en.wikipedia.org
• "Ademar José Gevaerd," Wikipedia. en.wikipedia.org
• "CINDACTA," Wikipedia. pt.wikipedia.org
• Gevaerd, A. J. Account of the May 20, 2005 meetings with the Brazilian Air Force, hosted by Patrick Gross. ufologie.patrickgross.org
• Wikimedia Commons. "Brazilian Air Force Northrop F-5E Tiger II.jpg" (Guilherme Bystronski, CC BY-SA 4.0). commons.wikimedia.org
• Clark, Jerome. The UFO Encyclopedia, 4th Edition, Relevant Information LLC.
• Good, Timothy. Above Top Secret: The Worldwide UFO Cover-Up, William Morrow, 1988.
• Pratt, Bob. UFO Danger Zone: Terror and Death in Brazil, Horus House Press, 1996.
• BBC News Brasil. "A noite em que 21 óvnis invadiram o espaço aéreo brasileiro e foram perseguidos por caças da FAB," January 14, 2022 (republished by Correio Braziliense; read there). correiobraziliense.com.br

Corrections (October 2026)

This page was corrected in October 2026 after checking it against the government's 2022 retrospective (gov.br), the BBC News Brasil retrospective (2022), the Revista Asas sortie-by-sortie account, Portal Vigília's report on the 2015 audio release, Patrick Gross's compilation (which quotes the 1986 press and Veja), and quotations from the tapes posted on Metabunk. The main corrections: the first Mirage to take off (22:48) was flown by Captain Viriato, not Captain Rodolfo da Silva Souza, who took off at 23:17. Viriato's contact was radar only, with no visual sighting. Captain Jordão's 13 contacts were radar plots behind his aircraft that he could not see when he turned, not lights flying in formation beside him. Rodolfo and Rozenberg saw nothing, and BBC News Brasil says they had no contact at all. BBC News Brasil and the Wikipedia summary say Ozires Silva was flying the Xingu himself, with Alcir Pereira as co-pilot. The 2015 audio release was 16 tapes, eight covering May 19 and just under 13 hours in total, not "seven hours" of the night itself. The FAB report's conclusion is now quoted exactly ("solid and reflect, in a certain way, intelligence"). Major Cerqueira's quote is replaced with his recorded words.

Following this review, the rating was changed from Credible 82 to Credible 70 (October 27, 2026), because the higher rating had rested partly on claims corrected or removed above.

Removed or softened as unconfirmed in any source checked: the minister's "the sky was clear," "3,600 km/h" and "incredible rapidity"; Brigadier Sócrates Monteiro speaking at the press conference (his reported remarks about filming and 240–1,500 km/h are now attributed to later retellings); his "regular occurrence" interview as minister; Alcir Pereira's "never seen anything like it" and "too agile, impossible that there was a human inside" quotes; Lt. Marinho's "speeds and maneuvers impossible" quote; Captain Rodolfo's "practically visual with the ground" quote; Captain Jordão's off-duty exam-study anecdote; Captain Rozenberg's "three intercept attempts over a 54-minute flight"; FAB tail numbers 4848, 4849 and 4913; a 21:20 CODA notification; a 01:45 end time; a May 25, 1986 Fantástico broadcast; Moreira Lima's 1997 interviews and his briefing of President Sarney that night; "roughly 50 pages" examined in 2005; a 2023 documentary with "over one million viewers"; astronomer Ronaldo Mourão's Halley's Comet explanation; pilots being privately told of "electronic warfare" testing; Viriato's target speed of "850 mph" (Gross gives Mach 1.1 for Marinho's F-5E); and the claim that the case was "never formally closed."