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E-006503LANDMARK CASE · HIGH CORROBORATIONDATE PRECISION: exactRECORD COMPLETENESS: 100%

F-61 Radar-Visual Intercept over Japan

October 15, 1948Japan patrol area, unspecified, Japan

Hall, citing Ruppelt, describes an F-61 night fighter repeatedly trying to close on a radar target that accelerated away; on one pass the crew reported a 20–30-foot silhouette shaped like a rifle bullet.

// LINKED CLASSIFICATIONS:Elongated / Cigar / Cylinder(C-000255)→Scientific & Observational Types(P-000101)→
Claims are displayed with the source wording, locator, relationship and verification state. Competing claims remain separate rather than being averaged into a single answer.
SOURCE COMPARISON

Encounter · Reported Encounter Observation

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CLAIM-693106reported
“Hall, citing Ruppelt, describes an F-61 night fighter repeatedly trying to close on a radar target that accelerated away; on one pass the crew reported a 20–30-foot silhouette shaped like a rifle bullet.”
The UFO Evidence
SRC-002107 · Radar UFO Sightings: F-61 Radar-Visual Intercept over Japan; uploaded PDF pp. 149-149
SUPPORTS
CLAIM-695078reported
“Section X repeats the 1948 Japan F-61 radar-visual intercept as a Far East military example.”
The UFO Evidence
SRC-002107 · Japan F-61 recap; uploaded PDF pp. 243-243
SUPPORTS
Multiple claim rows are intentionally retained when sources disagree. ANOMALY does not silently reconcile competing values.
SOURCE COMPARISON

Encounter · Investigation Source Caveat

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CLAIM-693107reported
“Project Sign case reported through Ruppelt and Hall. Original radar data and Air Force file are not directly ingested in this phase.”
The UFO Evidence
SRC-002107 · Radar UFO Sightings: evidential caveat for F-61 Radar-Visual Intercept over Japan; uploaded PDF pp. 149-149
SUPPORTS
SOURCE COMPARISON

Hall Radar Evidence Dossier · Hall Phase 05 Special-Evidence Analysis

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CLAIM-693007reported
“Hall distinguishes diffuse/intermittent meteorological radar returns, sharp persistent targets resembling solid objects, and slow-moving radar “angels,” and argues that specialized radar patterns require case-specific analysis.”
The UFO Evidence
SRC-002107 · Radar theory and target-type discussion; uploaded PDF pp. 142-148
SUPPORTS
CLAIM-693008reported
“Hall considers simultaneous radar-visual cases stronger than radar-only cases because two modes of observation can constrain explanations.”
The UFO Evidence
SRC-002107 · Radar-visual evidential framework; uploaded PDF pp. 142-148
SUPPORTS
Multiple claim rows are intentionally retained when sources disagree. ANOMALY does not silently reconcile competing values.
SOURCE COMPARISON

Hall Far East Foreign Reports Dossier · Hall Section X Foreign Reports Claim

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CLAIM-695010reported
“Hall states that language difficulties limited NICAP’s Far East collection and quotes the Taiwan Weather Bureau as favoring military responsibility for UFO observation and selective public release.”
The UFO Evidence
SRC-002107 · Far East source limitations and Taiwan Weather Bureau letter; uploaded PDF pp. 243-243
SUPPORTS
F-61 Radar-Visual Intercept over Japan (October 15, 1948): Evidence Dossier & Witness Reports | ANOMALY | ANOMALY UAP Archive & Controlled Vocabulary