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E-009535LANDMARK CASE · HIGH CORROBORATIONDATE PRECISION: exactRECORD COMPLETENESS: 100%

Lake Michigan L-1011 Silvery-Disc Pass

July 4, 1981Lake Michigan, Great Lakes, United States

An L-1011 captain reported a silvery disc darting ahead and above the airliner, rolling to reveal a thin profile with six dark porthole-like markings before disappearing northward.

// LINKED CLASSIFICATIONS:Disc / Saucer(C-000253)→Physical Trace & Environmental Effects(P-000103)→
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 · Hall Volume II Encounter Claim

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CLAIM-951031reported
“An L-1011 captain reported a silvery disc rapidly crossing ahead, rolling to show an approximately 10:1 thin side profile with six evenly spaced dark porthole-like markings.”
The UFO Evidence, Volume II: A Thirty-Year Report
SRC-009500 · July 4, 1981 Lake Michigan L-1011 case; uploaded PDF pp. 156-157
SUPPORTS
SOURCE COMPARISON

Hall Volume II Pilot and Aircrew Evidence Framework · Hall Volume II Source Framework

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CLAIM-951003reported
“Hall argues that professional pilots are experienced observers of aircraft, balloons, weather, lights and aerial hazards, while noting that pilot reporting channels became more restrictive over the decades.”
The UFO Evidence, Volume II: A Thirty-Year Report
SRC-009500 · Pilot expertise and reporting context; uploaded PDF pp. 130-163 · PRIMARY SOURCE
SUPPORTS
SOURCE COMPARISON

Hall Volume II Pilot and Aircrew Evidence Framework · Hall Volume II Recurring Feature

HOW TO READ THIS →
CLAIM-951004reported
“Section III’s chronology repeatedly describes pacing, close passes, abrupt acceleration, formation changes, radar correlation and occasional aircraft electromagnetic effects.”
The UFO Evidence, Volume II: A Thirty-Year Report
SRC-009500 · Aircraft encounter chronology and recurring patterns; uploaded PDF pp. 132-163 · PRIMARY SOURCE
SUPPORTS
Lake Michigan L-1011 Silvery-Disc Pass (July 4, 1981): Evidence Dossier & Witness Reports | ANOMALY | ANOMALY UAP Archive & Controlled Vocabulary