CORROBORATED
CF-GEI-20070801851 CORROBORATED

The Nantes Circoflex Kite Sighting

CASE FILE — CF-GEI-20070801851 — CASEFILES CLASSIFIED ARCHIVE
Date Date when the incident was reported or occurred
2007-08-28
Location Reported location of the sighting or event
Nantes, Loire-Atlantique, France
Duration Estimated duration of the observed phenomenon
3-4 minutes
Object Type Classification of the observed object based on witness descriptions
disk
Source Origin database or archive this case was sourced from
geipan
Witnesses Number of known witnesses who reported the event
2
Country Country where the incident took place
FR
AI Confidence AI-generated credibility score based on source reliability, detail consistency, and corroboration
85%
On August 28, 2007, between 19:00 and 19:10 hours, two witnesses observed an unusual flying object from their terrace in Nantes, Loire-Atlantique department. The object was described as round and flat with a transparent dome on top. It rose while swaying or rocking in the air, moving from east to west across the sky. The underside of the object appeared dark, and notably, no sound was heard during the approximately 3-4 minute observation period. The witnesses were the only ones to report this phenomenon, with no corroborating testimony from other residents in the area despite the early evening timing when many people might be outdoors. The object's distinctive rocking motion and silent operation initially seemed anomalous to the observers, prompting them to file a report with GEIPAN. Following an official investigation by GEIPAN (France's official UAP investigation service under CNES), investigators determined that the witnesses had most likely observed a Circoflex-type kite. This conclusion led to a 'B' classification, indicating a phenomenon that was likely identified with a high degree of certainty. The case demonstrates how unfamiliar aerial objects, particularly recreational devices viewed under certain conditions, can appear anomalous to even attentive observers.
02 Timeline of Events
19:00
Initial Observation
Two witnesses on their terrace in Nantes first notice an unusual object in the sky, described as round and flat with a transparent dome
19:00-19:10
Object Movement Observed
For approximately 3-4 minutes, witnesses observe the object rising while swaying or rocking, moving from east to west. The underside appears dark, and no sound is detected
19:10
Observation Ends
Object disappears from view or observation concludes after approximately 3-4 minutes of viewing
Post-incident
Report Filed with GEIPAN
Witnesses file official report with France's GEIPAN (UAP investigation service under CNES)
Post-investigation
GEIPAN Investigation Concludes
Official investigation determines witnesses likely observed a Circoflex-type kite. Case classified as 'B' (probable explanation identified)
03 Key Witnesses
Anonymous Witness 1
Civilian
medium
One of two witnesses observing from residential terrace in Nantes
"Celui-ci est rond, plat avec un dôme transparent. L'objet s'élève en se balançant et se déplace d'Est en Ouest."
Anonymous Witness 2
Civilian
medium
Second witness observing alongside first witness from the same terrace location
04 Analyst Notes -- AI Processed
This case represents a textbook example of misidentification of a known aerial device. The Circoflex kite is a specific type of steerable kite with a distinctive dome-like structure that matches the witnesses' description of a 'round, flat object with a transparent dome.' The rocking or swaying motion described is entirely consistent with kite behavior in variable wind conditions. The silent operation is expected for an unpowered device, and the dark underside would be typical of the kite's fabric construction when backlit by the evening sky. The credibility of the witness testimony is not in question—they accurately reported what they saw. However, the lack of familiarity with this specific type of recreational kite led to the misinterpretation. The east-to-west trajectory matches prevailing wind patterns that would be expected in the Nantes region during late summer. The timing (early evening in late August) coincides with favorable kite-flying conditions. The absence of corroborating witnesses, while limiting the investigation, is not unusual for a brief sighting of what turned out to be a mundane object. GEIPAN's 'B' classification is appropriate, indicating a likely explanation supported by investigation findings.
05 Theory Comparison
BELIEVER ANALYSIS
SKEPTIC ANALYSIS
Conventional Aerial Device
Beyond the specific Circoflex kite identification, this object could have been any number of conventional aerial devices including various kite designs, a small experimental drone, a balloon with an unusual shape, or even debris caught in wind currents. The lack of sound, the description of transparent and dark materials, and the swaying motion all point to a lightweight, wind-driven object rather than any powered or anomalous craft.
06 Verdict
ANALYST VERDICT
This case is confidently explained as the misidentification of a Circoflex-type kite. The physical description, behavior pattern, silent operation, and swaying motion all align perfectly with the characteristics of this recreational device. GEIPAN investigators made the correct determination, and the 'B' classification appropriately reflects a case that is likely solved but lacks absolute confirmation (such as identifying the specific kite operator). This case holds minimal significance for UAP research beyond serving as an educational example of how unfamiliar conventional objects can appear anomalous. It demonstrates the importance of thorough investigation and knowledge of various aerial devices, and validates the value of France's systematic approach to investigating reported phenomena.
AI CONFIDENCE SCORE:
85%
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