CORROBORATED
CF-GEI-19790300614 CORROBORATED
The Morgny-la-Pommeraye Ice Block Incident
CASE FILE — CF-GEI-19790300614 — CASEFILES CLASSIFIED ARCHIVE
Date Date when the incident was reported or occurred
1979-03-31
Location Reported location of the sighting or event
Morgny-la-Pommeraye, Seine-Maritime, Haute-Normandie, France
Duration Estimated duration of the observed phenomenon
Instantaneous impact
Object Type Classification of the observed object based on witness descriptions
other
Source Origin database or archive this case was sourced from
geipan
Country Country where the incident took place
FR
AI Confidence AI-generated credibility score based on source reliability, detail consistency, and corroboration
85%
On March 31, 1979, the gendarmerie in Morgny-la-Pommeraye, Seine-Maritime, was contacted to investigate a large block of ice that had fallen onto the parking area of the local railway station. The incident resulted in no casualties or property damage, though ice fragments were scattered across approximately thirty meters of the parking area. Physical examination of the ice revealed the presence of beige and reddish substances embedded within the frozen mass.
Samples of the colored substances were collected and submitted for laboratory analysis. The analytical results identified the material as grease of either vegetable or animal origin. Investigators noted that the village is located directly beneath a heavily-trafficked air corridor, positioning it in the flight path of numerous commercial aircraft. The investigation concluded that the ice block most likely detached from an aircraft passing overhead.
GEIPAN classified this case as 'B' (probable identification), determining that specific atmospheric conditions combined with the high-altitude air traffic could produce such incidents. The presence of organic grease material within the ice is consistent with aircraft waste water systems, which can freeze at altitude and occasionally detach during flight, creating what aviation authorities term 'blue ice' or 'megacryometeors' when originating from lavatory drainage systems.
02 Timeline of Events
1979-03-31 unknown time
Ice Block Impact
Large block of ice falls onto the railway station parking area in Morgny-la-Pommeraye, fragmenting across approximately 30 meters
1979-03-31 shortly after
Discovery and Report
Station personnel or civilians discover the ice fragments and notify the gendarmerie
1979-03-31 same day
Official Investigation Begins
Gendarmerie officers arrive to document the scene, confirm no casualties or damage, and observe beige and reddish substances within the ice
1979-03-31 evidence collection
Sample Collection
Officers collect ice samples containing the colored substances for laboratory analysis
1979-04-XX (estimated)
Laboratory Analysis Completed
Chemical analysis identifies the substances as grease of vegetable or animal origin, consistent with aircraft waste system contamination
Investigation conclusion
GEIPAN Classification
Case classified as 'B' (probable identification) - ice block from aircraft flying through busy air corridor under specific meteorological conditions
03 Key Witnesses
Anonymous Station Personnel
Railway station staff or civilian observer
medium
Individual(s) who discovered the ice block and reported it to gendarmerie
Gendarmerie Officers
Law enforcement investigators
high
French police officers who responded to the report, documented the scene, and collected physical samples for analysis
04 Analyst Notes -- AI Processed
This case represents a well-documented instance of aircraft-related ice fall, with physical evidence collection and laboratory analysis providing concrete identification of the phenomenon. The GEIPAN investigation was thorough, including gendarmerie documentation, sample collection, and chemical analysis. The presence of organic grease material (vegetable or animal origin) is particularly significant, as it strongly suggests contamination from aircraft systems rather than naturally-occurring atmospheric ice formation.
The geographic context is crucial to the assessment: Morgny-la-Pommeraye's location beneath a busy air corridor provides both opportunity and frequency for such events. Aviation ice falls, while uncommon, are documented phenomena resulting from either lavatory system leakage freezing at altitude or atmospheric ice accumulation on aircraft surfaces. The thirty-meter scatter pattern is consistent with a single mass fragmenting upon impact. The classification as 'B' rather than 'A' (certain identification) likely reflects the absence of specific aircraft identification, though the evidence overwhelmingly points to aircraft origin rather than any anomalous phenomenon.
05 Theory Comparison
BELIEVER ANALYSIS
SKEPTIC ANALYSIS
Megacryometeor (Natural Ice Fall)
While rare, large ice masses can theoretically form in the atmosphere through natural processes without aircraft involvement (megacryometeors). However, this explanation is highly unlikely in this case due to the laboratory-confirmed presence of organic grease material, which has no natural atmospheric source. The air corridor location further diminishes the probability of natural origin.
06 Verdict
ANALYST VERDICT
This case is almost certainly explained as an aircraft ice fall incident, most likely from lavatory waste water systems (so-called 'blue ice') given the presence of organic grease material. The physical evidence, laboratory analysis, geographic location beneath air traffic corridors, and absence of any anomalous characteristics all support this mundane explanation. While the case merits documentation as a public safety concern regarding aircraft operations, it holds no significance for unexplained aerial phenomena research. Confidence level: very high (95%+). This represents proper investigative protocol for eliminating prosaic explanations before considering anomalous causes.
AI CONFIDENCE SCORE:
85%
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