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E-009525LANDMARK CASE · HIGH CORROBORATIONDATE PRECISION: exactRECORD COMPLETENESS: 100%

Coyne Army Reserve Helicopter Close Encounter

October 18, 1973Mansfield area, Ohio, United States

Four Army Reserve helicopter crew members reported an approaching red light becoming a close structured object that hovered ahead, illuminated the cockpit with a green beam, then departed. The helicopter was reportedly climbing despite the crew having initiated a descent.

// 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 · Hall Volume II Encounter Claim

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CLAIM-951010reported
“Coyne, Healey and Yanacek described a solid gray metallic cigar-shaped object with a slight dome, red nose light, white tail light and green beam hovering directly ahead of the helicopter after an apparent collision-course approach.”
The UFO Evidence, Volume II: A Thirty-Year Report
SRC-009500 · October 18, 1973 Coyne helicopter encounter; uploaded PDF pp. 96-99
SUPPORTS
SOURCE COMPARISON

Encounter · Hall Volume II Source Caveat

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CLAIM-951011reported
“Hall reports the helicopter’s altimeter showing a climb to about 3,500 feet while the crew had been executing a powered descent; the attempted Mansfield radio exchange was not found on later FAA tape review.”
The UFO Evidence, Volume II: A Thirty-Year Report
SRC-009500 · Coyne altitude/radio evidence caveats; uploaded PDF pp. 98-99
SUPPORTS
SOURCE COMPARISON

Hall Volume II Military-Witness Evidence Framework · Hall Volume II Source Framework

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CLAIM-951001reported
“Hall says military UFO reports were continuous during the Blue Book era and that after the public project ended, reporting became more fragmented, restricted, or difficult to access.”
The UFO Evidence, Volume II: A Thirty-Year Report
SRC-009500 · Military reporting context and post-Blue Book visibility; uploaded PDF pp. 88-128 · PRIMARY SOURCE
SUPPORTS
SOURCE COMPARISON

Hall Volume II Military-Witness Evidence Framework · Hall Volume II Interpretation

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CLAIM-951002reported
“Hall groups restricted-area incursions, interceptor pursuits, radar-visual cases and weapons-site events as especially significant because the witnesses and systems were tasked with air defense or security.”
The UFO Evidence, Volume II: A Thirty-Year Report
SRC-009500 · Military witness and security/radar case framing; uploaded PDF pp. 88-128 · PRIMARY SOURCE
SUPPORTS
SOURCE COMPARISON

Hall Volume II Model-UFO / Typical-Features Framework · Hall Volume II Source Framework

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CLAIM-955250reported
“Hall’s model-UFO table uses ten recurring features: multiple witnesses, disc/ellipse shape, E-M effects, body lights, bright illumination, light beams, hover-acceleration, sharp maneuvers, physiological effects and physical effects.”
The UFO Evidence, Volume II: A Thirty-Year Report
SRC-009500 · The Model UFO/Table 2 typical features; uploaded PDF pp. 463-465
SUPPORTS
SOURCE COMPARISON

Hall Volume II Model-UFO / Typical-Features Framework · Hall Volume II Recurring Feature

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CLAIM-955251reported
“Hall selects ten cases to illustrate combinations of the model features and describes Socorro as prototypical in other respects because of witness quality, traces, prompt investigation and an unresolved official outcome.”
The UFO Evidence, Volume II: A Thirty-Year Report
SRC-009500 · Model-case discussion; uploaded PDF pp. 463-465
SUPPORTS
SOURCE COMPARISON

Hall Volume II Model-UFO / Typical-Features Framework · Hall Volume II Source Caveat

HOW TO READ THIS →
CLAIM-955253unverified
“The typical-feature table intentionally favors detailed multi-channel cases and therefore should not be interpreted as the necessary definition of every UFO report.”
The UFO Evidence, Volume II: A Thirty-Year Report
SRC-009500 · Model-feature caveat; uploaded PDF pp. 463-465
CONTEXTUALIZES