Project 10073 Record Card and Associated Incoming Messages — Plainville, Kansas, 19 October 1959

This document collection details a UFO sighting reported on 19 October 1959, near Plainville, Kansas. The primary witness was a United States Air Force Captain and English instructor at the Air Force Academy, who was piloting a T-33 aircraft at 40,000 feet. The witness reported observing a bright, yellowish-white light, comparable in size to the planet Venus, approaching his aircraft head-on. Upon taking evasive action to avoid a potential collision, the light faded, only to reappear shortly thereafter before disappearing over the horizon. The sighting lasted approximately 20 seconds during the first encounter and 30 seconds during the second. The report includes a Project 10073 record card, incoming staff messages, and an analysis sheet. The Air Technical Intelligence Center (ATIC) evaluated the report and concluded that the information provided was insufficient to reach a definitive conclusion. The investigators suggested several potential explanations, including the possibility of meteors, lights from another aircraft, or the reflection of ground lights. Despite the lack of a firm identification, the witness was noted as reliable. The documentation includes follow-up inquiries from ATIC to the witness regarding specific details of the object's movement, elevation, and the nature of the evasive maneuvers taken by the pilot. The pilot confirmed that he had turned to avoid a collision course with the rapidly approaching object. The final analysis sheet reiterates that the nature of the object remains unknown, noting that the angular and linear movement observed by the pilot could not be definitively attributed to any known phenomenon.