The Coyne Helicopter Incident

On the night of October 18, 1973, a U.S. Army Reserve UH-1H Huey commanded by Captain Lawrence Coyne, flying near Mansfield, Ohio, encountered a gray, cigar-shaped object with a red bow light and a green beam that swept the cockpit. During the encounter the helicopter, trimmed for descent, climbed instead. All four crew members reported the event immediately and testified consistently for years, and ground witnesses corroborated the object. The case won a French newspaper's prize for the best-documented case of the year and remains a benchmark aviation encounter.

Flying at about 2,500 feet, crew chief Robert Yanacsek spotted a red light converging on them. Coyne took the controls and put the Huey into a powered descent. The object closed rapidly, then stopped, seemingly hovering above and ahead: a featureless gray cigar with a domed section, its green beam swinging into the cabin. Radio contact failed on multiple frequencies during the encounter. Moments later the crew found the helicopter at 3,500 feet and climbing at a rate Coyne insisted matched no control input he had made. The object departed to the northwest. Total duration was several minutes.

Four crew members on the record immediately (the incident was reported that night and covered within days), the radio failure, the unexplained climb, and a family of ground witnesses who described the object and beam over the helicopter. No radar data was recovered.

The Army accepted the crew's report; no formal explanation was issued. The case arrived post-Blue Book, in the great October 1973 wave, and received no federal investigation.

Philip Klass proposed a bright bolide from the Orionid stream: the closing light, the green tint (common in fireballs), and seconds of drama stretched by memory, with the climb explained by Coyne unconsciously pulling collective while distracted. Proponents, led by researcher Jennie Zeidman's exhaustive CUFOS investigation, answer that the encounter lasted minutes, not seconds, that the object stopped and paced the aircraft, that four crewmen do not collectively hallucinate a hover, and that the ground witnesses watched the same shape. Zeidman's report remains the standard, and the case remains unexplained.