Project 1C073 Record — Indianapolis, Indiana, 6 September 1967

This document contains records and correspondence regarding an unidentified aerial phenomenon reported in Indianapolis, Indiana, on 6 September 1967. The primary report details a sighting by a civilian witness, identified as a treasurer for Lippman Assoc., who observed a white, saucer-shaped object that was flat on the top and bottom. The witness, who was described as having a college education and being normally reliable, observed the object for two minutes as it performed a straight, climbing flight toward the east-northeast at a constant speed. The witness noted that the object had no visible windows, doors, lights, or markings. The observer also noted that a civilian airliner passed through the area at the time of the sighting and compared the object to the aircraft. The Aerial Phenomena Office, led by Major Victor Quintanilla, Jr., conducted an investigation into the incident. The office noted that there were atmospheric inversions at 1200, 5500, and 8500 feet. The official conclusion reached by the Air Force was that the observer might have seen an aircraft, noting that the witness lacked special training or background to make accurate estimates of the object's size or distance. The document includes internal Air Force staff messages and correspondence requesting information from local aviation authorities regarding any aerial advertising planes that might have been operating in the area at the time, as the office had received similar descriptions of such planes in the past.