United States.Coyne Helicopter

On 18 October 1973, at 23:05 according to the official report (Coyne later said 23:10), U.S. Army Reserve UH-1H helicopter 68-15444 was returning from Columbus to Cleveland at 2,500 feet on a heading of 030, east-southeast of Mansfield Airport, Ohio. On board were four members of the 316th Medical Detachment: Captain Lawrence J. Coyne (pilot in command), First Lieutenant Arrigo Jezzi (co-pilot, who was flying), Sergeant Robert Yanacsek (crew chief) and Sergeant John Healey (flight medic). It was a clear, moonless night. Yanacsek saw a red light on the eastern horizon, 90° to the flight path, and about 30 seconds later reported that it was converging on the helicopter at the same altitude, at more than 600 knots and on a collision heading. Coyne took the controls and began a powered descent from 2,500 to 1,700 feet; in investigator Jennie Zeidman's reconstruction, first at about 500 feet per minute and then at about 2,000.

According to the report, instead of striking them the object 'hesitated momentarily' over the helicopter and continued slowly west, then accelerated sharply, passed west of Mansfield Airport and turned 45° to the northwest. The physical description came later: to UPI, two weeks afterwards, Coyne spoke of a 'big, gray, metallic-looking' hull about 60 feet long, shaped like an airfoil or a 'streamlined fat cigar', with a red light in front, a centre dome and a green light at the rear that swivelled like a spotlight and bathed the cabin in green. The uncontrolled spinning of the magnetic compass appears in later crew accounts gathered by Zeidman, not in the report or the 1973 press. The most striking point is in the report: Coyne saw the altimeter showing a 1,000 feet-per-minute climb and 3,500 feet with the collective in the full-down position. In Zeidman's reconstruction, when Coyne raised the collective the helicopter kept climbing to 3,800 feet, where he felt he had regained control. He told UPI there had been no noise, turbulence or noticeable g-forces.

Coyne radioed Mansfield tower to ask whether there were any high-performance aircraft in the area; the tower acknowledged and then gave no further response. According to Zeidman, contact was lost on both UHF and VHF and was later restored with Akron-Canton. The Air National Guard F-100s based at Mansfield were not airborne, Coyne told UPI. Zeidman later found ground witnesses who do not appear in the report: a woman and four children driving by the Charles Mill Reservoir saw a very bright red light and a green one converging with a helicopter, and when the red one stopped 'everything was green', the trees and the car; and in another house southeast of Mansfield a 14-year-old boy woken by the roar of a helicopter saw his room lit by an intense green light. The report, an Army disposition form titled 'Near Midair Collision with UFO Report', was signed by all four crewmen on 23 November 1973 and reproduced by Fawcett and Greenwood in Clear Intent (1984). Zeidman published her reconstruction through the Center for UFO Studies (CUFOS) in 1979.

The main skeptical explanation was offered by Philip J. Klass: a bolide from the Orionid meteor shower, active at the time, and a climb caused by the crew itself, which would have pulled on the controls by reflex without registering it. An ephemeris calculation gives that hypothesis a point in its favour: at 23:05 Eastern Daylight Time the Orionid radiant was only 1° above the east-northeastern horizon, and an earth-grazing meteor from that radiant crosses the sky precisely from east to west, long and slow, like the light Yanacsek saw. The 1973 accounts, moreover, give an approach of about 10 seconds and a momentary 'hesitation', not a long observation. Against it, Zeidman reconstructed a continuous observation of at least five minutes, incompatible with a meteor; no independent record of a bolide at that place and time is known; and the ground witnesses describe the green light over the helicopter. The piloting-error hypothesis remains the strongest objection to the physical component, because a reflexive climb is hard to exclude without an instrumental record of the controls.

Coyne offers a specific physical data point: the reported discrepancy between flight-control position (collective down, commanding descent) and actual altitude (a climb of ~1,800 feet). If accurate, it describes an apparent kinetic manipulation of a military aircraft, documented by four aviators who signed the report and supported, as to the green light, by civilian ground witnesses whom Zeidman found later.

The counterweight is central. Klass's objection (operator error, a reflexive collective pull-up under stress, plus a possible Orionid bolide for the light) is the most serious mundane explanation and, without a record of the controls, cannot be excluded: the 'climb against the controls' is in the signed report, but it rests on what Coyne read on the altimeter, not on an independent instrumental record. The geometry also gives the meteor an edge, since the Orionid radiant sat right on the eastern horizon, where the light came from. At the same time, the meteor fits poorly with the object's apparent halt and with the several-minute duration Zeidman reconstructed, and no record of the bolide is known.

What the case has is an institutional trail (a near-midair-collision report signed by all four crewmen and routed through the 83d USARCOM chain) and converging witnesses; it has no sensor record. It clearly illustrates a tension common to such cases: consistent professional testimony and a striking physical effect, but without the instrumentation that would close the debate between anomalous interaction and a perceptual-operational artifact under stress.