Air Intelligence Information Report: Sighting of Unidentified Flying Object, North Korea, 31 May 1952

This intelligence report details an encounter between an F-94 crew and an unidentified flying object over North Korea on 31 May 1952. The report, issued by Detachment 1 of the 6004th Air Intelligence Service Squadron, describes the object as a brilliant white light with a blue tint, estimated to be round in shape. The crew, described as conservative and reliable, observed the object for approximately two minutes. During the encounter, the object displayed superior speed and climbing capabilities compared to the F-94, and it was able to perform turns as effectively as the interceptor aircraft. The object was described as appearing to be the size of a household sewing thimble from a distance of 500 yards. The crew believed they maintained contact with the object by observing its silhouette against the dawn light and the glow of the F-94's afterburner. Despite the visual engagement, ground radar failed to detect the object, a failure for which no explanation was found. The report notes that the maneuvers described by the air crew were at variance with those reported by ground observers who claimed to have witnessed the same event. The D/I FEAF concluded that the object was possibly a light carried by a high-performance aircraft. The sighting occurred just south of Chorwon, approximately 180 nautical miles from Antung, under conditions of unlimited visibility and 50-knot winds.