Project 10073 Record Card — Sighting of Luminous Green Object, 27 Oct 52

On October 27, 1952, at 1356Z, a Pan American Airways (PAA) flight reported a sighting of an unidentified aerial phenomenon. The aircraft, identified as PAA 233, was cruising at an altitude of 11,500 feet on a heading of 190 degrees when the crew observed a luminous green object. The object was sighted due west of Port de France at an elevation of 20 degrees above the aircraft's sight level. According to the report, the object appeared to be of bright intensity and was falling straight down. The duration of the observation was approximately three seconds. The object continued its descent until it entered a cumulus cloud layer at an estimated altitude of 5,000 feet, at which point it illuminated the cloud. Weather conditions at the time were reported as 2/8 cumulus with bases at 2,000 feet and tops at 5,000 feet. The report was verified by the co-pilot and processed through the CIRVIS reporting system. The incident was documented under Project 10073, with the final evaluation on the record card indicating 'insufficient data for evaluation.' The documentation consists of multiple copies of the same incident report, including a Project 10073 record card and several military communication cables (CAIRC X1423 OIN) distributed to various commands, including the Air Defense Command and the Air Technical Intelligence Center at Wright-Patterson Air Force Base.