CORROBORATED
CF-GEI-20070601730 CORROBORATED
The Monein Transall Overflight
CASE FILE — CF-GEI-20070601730 — CASEFILES CLASSIFIED ARCHIVE
Date Date when the incident was reported or occurred
2007-06-12
Location Reported location of the sighting or event
Monein, Pyrénées-Atlantiques, France
Duration Estimated duration of the observed phenomenon
5 seconds visual observation, 10 minutes of audible presence
Object Type Classification of the observed object based on witness descriptions
triangle
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 the night of June 12-13, 2007, two witnesses at their residence in Monein, Pyrénées-Atlantiques, experienced two distinct encounters with a low-flying aircraft. The first occurrence began at approximately 22:30 when both witnesses heard a deafening roar lasting 10 minutes, though they could see nothing through their windows despite the intensity of the sound. The second encounter occurred at precisely 00:08 when the same thunderous noise returned.
During this second event, one witness managed to observe the source for approximately 5 seconds: a gray triangular object with colored lights flying at very low altitude in a precise direction. The object then disappeared from view as the noise gradually faded. The witnesses' descriptions, combined with official flight records, provided a clear explanation for the sighting.
GEIPAN investigation revealed that several Transall C-160 military transport aircraft conducted flights in this sector during the night of June 12-13. The witness descriptions—particularly the triangular shape, colored lights, low altitude flight profile, and distinctive engine noise—were entirely consistent with the Transall aircraft's characteristics. GEIPAN classified this case as 'B' (probable identification with high confidence), concluding it was most likely an observation of military aviation activity.
02 Timeline of Events
22:30
First Auditory Encounter
Both witnesses at their home hear a deafening roar lasting approximately 10 minutes. Despite the intensity of the sound, they cannot see anything through their windows.
00:08
Visual Sighting of Triangular Object
The same thunderous noise returns. One witness observes a gray triangular object with colored lights flying at very low altitude in a precise direction. Visual observation lasts 5 seconds.
00:08-00:09
Object Disappears
The triangular object moves out of the witness's field of view and the roaring noise gradually diminishes and fades away.
2007-06-13
GEIPAN Investigation Initiated
Official investigation begins. GEIPAN investigators cross-reference witness testimony with military flight records for the region.
Investigation Period
Flight Records Confirm Transall Activity
GEIPAN confirms that several Transall C-160 military transport aircraft conducted flights in the Monein sector during the night of June 12-13, 2007.
Case Resolution
Classification B: Probable Identification
Case classified as 'B' - probable observation of Transall aircraft. Witness descriptions match aircraft characteristics and confirmed flight activity.
03 Key Witnesses
Anonymous Witness 1
Civilian resident
medium
Primary visual witness who observed the object during the second encounter at 00:08. Provided detailed description including timing, shape, color, and flight characteristics.
"At 00:08 precisely the same roaring noise was heard and [I] saw for 5 seconds a gray triangular object with colored lights. The object flew at very low altitude in a precise direction."
Anonymous Witness 2
Civilian resident
medium
Secondary witness who corroborated the auditory aspects of both encounters, hearing the deafening noise during both the 22:30 and 00:08 events.
04 Analyst Notes -- AI Processed
This case demonstrates the importance of cross-referencing witness reports with known aviation activity. The witnesses' account shows several hallmarks of credible testimony: they reported the incident twice (suggesting they initially believed it anomalous), provided specific timing (00:08 precisely), and accurately described observable characteristics of the Transall C-160 aircraft without initially recognizing it.
The Transall C-160 is a twin-engine military transport aircraft with a distinctive triangular silhouette when viewed from certain angles, prominent navigation lights, and notably loud turboprop engines—all matching the witness description. The 10-minute duration of sound during the first encounter suggests the aircraft was conducting low-altitude maneuvers or approaches in the area. Military training flights often occur at night and at low altitudes, which would explain both the visual observation difficulty during the first encounter (22:30) and the exceptional loudness. The GEIPAN 'B' classification indicates strong evidence supporting conventional explanation, with the investigation corroborating flight records with witness testimony.
05 Theory Comparison
BELIEVER ANALYSIS
SKEPTIC ANALYSIS
Misidentification Due to Unfamiliarity
The witnesses, likely unfamiliar with military aircraft operating at night and at unusually low altitudes, naturally found the experience anomalous. The Transall C-160, when viewed from below at night, presents a triangular aspect with navigation and position lights that could appear unusual to civilian observers. The exceptional loudness and duration of the sound, combined with the inability to see the aircraft during the first encounter (possibly obscured by the house or trees), created an impression of mystery. This is a textbook case of how conventional aircraft can be reported as unidentified objects when context is lacking.
06 Verdict
ANALYST VERDICT
This case is almost certainly explained as an observation of French Air Force Transall C-160 military transport aircraft conducting night operations. The confidence level is high due to: (1) confirmed Transall flights in the sector during the exact timeframe, (2) precise match between witness descriptions and aircraft characteristics, and (3) typical behavior patterns of military training flights. While the witnesses initially found the experience unusual—understandably so given the noise intensity and low altitude—the case holds minimal significance as an anomalous event. It does, however, serve as a useful example of how unfamiliarity with military aircraft can lead to reports that appear mysterious until properly investigated. GEIPAN's thorough investigation and access to military flight records allowed for definitive resolution.
AI CONFIDENCE SCORE:
85%
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