CORROBORATED
CF-GEI-20090802372 CORROBORATED

The Raucourt Wind Turbine Disk

CASE FILE — CF-GEI-20090802372 — CASEFILES CLASSIFIED ARCHIVE
Date Date when the incident was reported or occurred
2009-08-08
Location Reported location of the sighting or event
Raucourt-et-Flaba, Ardennes, France
Duration Estimated duration of the observed phenomenon
2-3 seconds
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
1
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 8, 2009, between 23:00 and 23:30 hours, a female driver observed a disk-shaped, slightly oval object with a white-silver color positioned above a wind turbine near Raucourt-et-Flaba in the Ardennes department of France. The observation lasted only 2-3 seconds before the object rapidly disappeared. The witness was driving at the time, and though accompanied by a passenger, the second person did not observe the phenomenon due to its brief duration. The case was submitted late to GEIPAN (France's official UFO investigation agency under CNES) and underwent preliminary investigation by their expert panel. Investigators noted the primary witness exhibited a strong emotional state during testimony. The angular size of the observed object measured approximately 4 degrees, which investigators determined corresponded precisely to the potential size of moonlight reflecting off a wind turbine blade—a possibility the witness herself mentioned during her account. GEIPAN classified this case as "C" (unexplained but low consistency) under their rating system, noting the observation presented a low degree of strangeness, was witnessed by only one person from inside an automobile, had no direct corroboration from the passenger, and the preliminary investigation (IPN) proved inconclusive. Despite remaining technically unexplained, the case lacks compelling unusual characteristics.
02 Timeline of Events
23:00-23:30
Initial Observation
Female driver observes disk-shaped, slightly oval object with white-silver coloring positioned above a wind turbine while driving near Raucourt-et-Flaba
23:00-23:30 +2-3 seconds
Rapid Disappearance
Object disappears very rapidly. Passenger unable to observe due to brief duration of event
Post-incident (date unknown)
Late Submission to GEIPAN
Case submitted to GEIPAN significantly after the incident date for official investigation
Investigation phase
Preliminary IPN Investigation
GEIPAN conducts preliminary investigation (IPN) which proves inconclusive. Investigators note witness's strong emotional state
Analysis phase
Expert Panel Analysis
GEIPAN expert panel analyzes the case. Determines 4-degree angular size matches potential moonlight reflection on turbine blade
Classification
Class C Assignment
Case classified as 'C' - unexplained but low consistency with no significant strangeness characteristics
03 Key Witnesses
Anonymous Witness 1
Civilian driver
medium
Female driver traveling with passenger near Raucourt-et-Flaba. GEIPAN investigators noted she exhibited strong emotional state during testimony, which may have affected perception or recall.
"The witness herself mentioned the possibility of moonlight reflection on the wind turbine blade during her testimony."
Anonymous Witness 2
Passenger
unknown
Vehicle passenger who did not observe the phenomenon due to its brief 2-3 second duration. Did not provide direct observation testimony.
04 Analyst Notes -- AI Processed
This case presents several factors that significantly limit its evidential value. The extremely brief observation window (2-3 seconds) provided minimal opportunity for detailed assessment, and the single-witness nature from inside a moving vehicle introduces multiple potential confounding factors including windshield reflections, optical distortions, and limited perspective. The witness's acknowledged emotional state, documented by GEIPAN investigators, must be considered when evaluating perceptual accuracy. The 4-degree angular measurement is particularly significant—this precisely matches the calculated size of potential moonlight reflection on wind turbine blades, which the witness herself proposed. Wind turbines with their large, rotating reflective surfaces are known to create unusual visual effects, especially at night when moonlight strikes at specific angles. The timing (23:00-23:30) would place the moon at a potentially optimal angle for such reflections. The rapid disappearance aligns with the brief moment when blade rotation would position the reflective surface at the correct angle to the observer's line of sight. GEIPAN's classification as "C" rather than "D" (explained) appears conservative given the strong correlation between observed and expected characteristics of the lunar reflection hypothesis.
05 Theory Comparison
BELIEVER ANALYSIS
SKEPTIC ANALYSIS
Optical Illusion or Misperception
The witness may have experienced an optical illusion created by viewing the illuminated wind turbine through a car windshield at night. Windshield reflections, internal car lighting, passing headlights, or distortions in the glass could have created a brief disk-like appearance. The witness's documented strong emotional state may have contributed to misinterpretation of a mundane stimulus. The extremely brief duration (2-3 seconds) prevented detailed observation or verification.
06 Verdict
ANALYST VERDICT
The most likely explanation for this sighting is moonlight reflecting off a wind turbine blade, as proposed by both the witness and GEIPAN analysis. The angular size match (4 degrees), the location directly above a turbine, the brief duration consistent with blade rotation, the silver-white coloration typical of moonlight reflection, and the nighttime timing all support this mundane explanation. Confidence level: high (85%). This case is significant only as an example of how familiar industrial structures can create brief, startling visual phenomena when viewed under specific lighting conditions, and demonstrates the value of witness honesty in suggesting prosaic explanations. The GEIPAN "C" classification appears to reflect procedural caution rather than genuine mystery, as the evidence strongly favors the reflection hypothesis despite the investigation being technically inconclusive.
AI CONFIDENCE SCORE:
85%
07 Community Discussion
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