Coyne Incident

Widely documented UFO encounter involving a U.S. Army Reserve helicopter crew commanded by Captain Lawrence J. Coyne near Mansfield, Ohio, on October 18, 1973, featuring multiple witness testimony about an unidentified aerial object that allegedly interfered with the aircraft’s flight controls and communications systems.

The incident occurred during a routine training flight when Coyne’s UH-1H helicopter crew observed a red light approaching from the east at high speed. Initially believing the object to be another aircraft on a collision course, Coyne attempted radio contact while descending to avoid impact, but received no response and experienced temporary radio equipment failure.

The crew reported that a large, metallic, cigar-shaped craft passed directly overhead, estimated at 50-60 feet in length with a bright white searchlight that illuminated the helicopter cabin through a green filter. During the encounter, the helicopter’s collective control lever allegedly moved upward without crew input, causing an uncommanded climb from 1,700 to 3,500 feet altitude.

Ground witnesses in Mansfield confirmed observing both the helicopter and an accompanying bright object performing unusual aerial maneuvers, providing independent corroboration of the crew’s account. The incident attracted significant media attention and investigation by UFO researchers, aviation authorities, and skeptical investigators seeking conventional explanations.

Analysis of the event has produced conflicting interpretations, with some researchers suggesting the crew encountered a classified military aircraft or experienced instrument malfunctions during night flying conditions, while others consider it among the most credible military UFO encounters due to the multiple qualified witnesses and documented flight anomalies.