When and where was F-61 Radar-Visual Intercept over Japan documented?

This encounter was documented on October 15, 1948 in Japan patrol area, unspecified, Japan.

What sources and physical claims back the F-61 Radar-Visual Intercept over Japan record?

The ANOMALY archive indexes 0 independent source citations across 0 claims, achieving a provenance completeness score of 43%.

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E-006503LANDMARK CASE · HIGH CORROBORATIONDATE PRECISION: exactRECORD COMPLETENESS: 43%

F-61 Radar-Visual Intercept over Japan

Name: F-61 Radar-Visual Intercept over Japan
Start: October 15, 1948
Location: Japan patrol area, 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)→

// PROVENANCE COVERAGE

43% record completeness

This measures documentation coverage, not whether the encounter or its claims are true.

0 SOURCES · 0 PRIMARY

Date documented

October 15, 1948

Location documented

Japan patrol area, unspecified, Japan

Map coordinates available

No latitude/longitude is available for mapping.

Catalogue classification linked

1 family link(s), 0 case-specific component(s).

Published citation-backed claims

0 encounter-target claim(s), 0 component claim(s).

Source coverage

0 unique source edition(s); 0 marked primary for at least one claim.

Assessment has encounter-level provenance

Assessment fields exist, but no encounter-target published citation-backed claim currently supports them.

Assessment values are present without encounter-target published citation-backed claims. Treat the matrix as unprovenanced metadata until direct claims are added.

Witness totals are stored, but no encounter-level cited claim currently documents where those numbers came from.

// ASSESSMENT METADATA

Stored case-assessment fields

DIRECT PROVENANCE INCOMPLETE

Stored total witness estimate2

Stored verified-report count0

Instrumental evidence flagYES

Official investigation flagYES

These stored assessment values are shown transparently but should not be treated as source-backed facts until encounter-target claims cite their provenance.