458 cases · 37 threads
Show
1994 · Over Coulommiers (Seine-et-Marne), France, at FL390

Air France 3532 and the giant disc over Coulommiers

On the record
Strength B · 7/10 · 3 independent
Evidence 2/4 · Witnesses 3/3 · Backing 2/3

A named airline crew reported it live, military radar recorded a matching track, and the gendarmerie and CNES investigated; the radar-visual match is not proven.

Plausibility High
Score 14 · 8 factors for, 0 against

A named airline crew reported a huge disc live, military radar recorded a matching track that vanished at the same moment, and the gendarmerie and CNES investigated.

See the factors ↓

Unexplained
Witness sketches. Page of the SEPRA/CNES investigation report on Air France AF3532 (28 Jan 1994) reproducing the captain's drawing (top: a long lens shape, annotated 'rouge/brun' and dated 14/06/2000) and the copilot's drawing (bottom: the shape changing from a sharp outline to a blurred ring and chevrons). The witnesses' names are masked on the scan. · CNES/GEIPAN (SEPRA investigation report, 2001)
When28 January 1994, 13:14Z
WhereOver Coulommiers (Seine-et-Marne), France, at FL390
Backing3 independent
Evidencesensor data, official records, documents

On 28 January 1994 the crew of Air France flight 3532, an A320 from Nice to London cruising at 39,000 ft over Coulommiers east of Paris, saw a huge dark red-brown disc that changed shape and then 'became transparent and disappeared'. They reported it live to air traffic control, which passed it to the French air defence centre. Its radar had recorded an unidentified track crossing the airliner's path at the same time, and the track vanished as the object did. The gendarmerie and the French space agency's UAP office investigated and left it unexplained.

Evidence, in date order (3)

  1. 28 Jan 1994CODA (French air defence operations centre)sensor data
    logged the crew's live report and recorded an unidentified radar track crossing their path CODA chronology
  2. 29 Jun 1997Gendarmerie (PV 00351/97, Roissy)official
    investigated in 1997, with a fax from Gen. Denis Letty; closed as unexplained PV 00351/97
  3. 10 Apr 2001CNES/SEPRA (2001)document
    investigation report; a Météo-France note (2012) rules out the Trappes radiosonde SEPRA RE-1

How plausible · High

A named airline crew reported a huge disc live, military radar recorded a matching track that vanished at the same moment, and the gendarmerie and CNES investigated.

  • ●●
    Access From the cockpit.
  • ●●
    No gain sought A live report.
  • ●●
    Character record Airline captain and crew.
  • ●●
    Independent convergence Three crew and a radar track.
  • ●●
    Checkable details check out CODA chronology; SEPRA report.
  • ●●
    Physical traces or official reaction Military radar.

Plausibility weighs how well an account fits where secrecy hides the documents by design, so missing records never count against it. Strength measures what is documented. Assessed 2026-10-23.

Claims

A huge dark red-brown disc or lens that changed shape, 'became transparent and disappeared', over one to two minutes.firsthandSourced, unconfirmedCapt. Jean-Charles Duboc and copilot Valérie Chauffour (A320 F-GFKG)
'Lentille brune marron… Les trois hommes d'équipage sont catégoriques.'firsthandOn the recordCODA chronology, reports at 13:16, 13:20 and 13:26Z (1994)
A radar track from Cinq-Mars-la-Pile, 50 seconds, about 100 kt, heading 240, no flight plan, crossed the Airbus's path about 1 NM away; the object vanished from sight and radar at the same moment.firsthandOn the recordCODA radar record, via the SEPRA report (2001)
'Les enquêteurs restent prudents quant à la corrélation entre la signature radar et le phénomène.'analysisOn the recordSEPRA/CNES investigation report (Leprevost, Weinstein, 10 Apr 2001)
A light aircraft for the radar echo, and an airliner or Super Guppy for what the crew saw. Natural cause proposed, not demonstrated; the crew reported it live in 1994.speculationLeadskeptics (zetetique.fr)

Where

Over Coulommiers (Seine-et-Marne), France, at FL390
48.8°N 3.1°E

In The picture

On the recordThe firmest layer is the one trained observers and instruments wrote down. Belgian gendarmes watched silent lit triangles in 1989-90 and ground radars tracked the wave; the Air Force sent F-16s and released its own data, though a radar study it released in 2025 puts the fighters' lock-ons down to their tracking softw…

People and organizations

Sources

A research project by Igor FrancePrivacy