Case study · CASE-034 · Military radar / fighter interception / civilian sightings
Brazil — Official Night of the UFOs (1986)
ExplainedOfficial military response documented; object identity unresolvedWhere São José dos Campos, São Paulo; Anápolis, Goiás; other Brazilian locationsWhen 1986-05-19/20
Case
- Overview
- Brazilian civilian and military personnel reported luminous aerial targets; CINDACTA air-defense radar reports prompted five Brazilian Air Force fighter launches. Government archival sources document the response, not a confirmed nonhuman origin.
- Investigative phases
- São José dos Campos tower and approach radar reports; Santa Cruz and Anápolis fighter sorties; May 23 ministerial press briefing; June 2 COMDA report; subsequent archival release.
- Reported phenomena
- Multiple luminous objects and radar contacts; intermittent visual/radar correlation; pilots described unusual apparent motion and difficulty intercepting.
- Public evidence status
- Brazilian National Archives confirms original military reports and pilot records; public government account states 21 objects reported and five fighters launched. Raw radar tracks not independently evaluated here.
- Alternative explanations / caveats
- Radar system limitations, atmospheric effects, aircraft/astronomical misidentification and observation geometry require assessment; the 21 figure is an official reported count, not 21 independently validated craft.
- Next research tasks
- Obtain complete June 2 COMDA report and pilot accounts from SIAN; evaluate timestamps, radar returns, intercept geometry and alternative explanations.
- Last reviewed
- 2026-11-01
Assessment
- Event date
- 1986-05-19/20
- Source category
- Brazilian government historical summary and national archival holdings
- Original data accessibility
- Official report and pilot documents identified; raw radar data not assessed
- Witness / instrument basis
- Civilian/military witnesses, radar contacts, five fighter launches
- Corroboration limitations
- Intermittent visual-radar correlation; incomplete sensor data and flight geometry
- Extraordinary claim assessment
- Unidentified reports do not establish extraordinary propulsion or origin
- Current status
- Official military response documented; object identity unresolved
- Priority research task
- Retrieve and analyze June 2 COMDA report, individual pilot logs and radar records
- Lead source ID
- SRC-135
- Last reviewed
- 2026-11-01
Evidence (2)
Documents gathered (2 lines of evidence)
On the timeline (1)
- 1986-05-19/20 Brazil's Official Night of the UFOs: sightings, air-defense radar reports and five fighter launches Claim unverified