UFOB Index Card and Project 10073 Record Card — Las Vegas, Nevada, March 1955

This document consists of a collection of records, including a UFOB Index Card and a Project 10073 Record Card, detailing an unidentified aerial phenomenon sighting reported on 2 March 1955. The incident involved an American Airlines pilot flying Flight 637, who observed a single, long object with no contrails while positioned approximately 50 miles away from his aircraft. The object was sighted while the pilot was over Las Vegas, Nevada, specifically noted as being 5 miles east of McCarran Airport. The pilot reported that the object changed its position without any apparent change in altitude. The sighting occurred just prior to sunset. The report was relayed to the March Flight Service Center by Captain Lester, an Airdrome Officer at Nellis Air Force Base, who had spoken with the pilot. The Air Technical Intelligence Center (ATIC) attempted to gather further information by mailing a Form 164 to the pilot on 3 March 1955; however, the form was never returned. Consequently, the case was classified as unresolved due to insufficient data for a formal evaluation. Weather conditions at the time were reported as having unlimited visibility with a surface wind from the south at 5 knots. The documentation includes internal military communications between various units, including the 27th Air Division (Defense) and the March Flight Service Center, confirming the details of the report and the subsequent lack of follow-up information.