Project 10073 Record — Sighting at Mount Pleasant, Utah, 21 July 1949

This document is a formal report concerning an unidentified aerial phenomenon observed on July 21, 1949, at 2013 hours Zebra. The incident occurred 10 miles east of Mount Pleasant, Utah, at coordinates 39° 34' N - 111° 20' W. The report was generated by the Headquarters of the 97th Bombardment Group at Biggs Air Force Base, Texas, and addressed to the Air Material Command at Wright-Patterson Air Force Base, Ohio. The primary witness was a 2nd Lieutenant serving as a pilot on a C-54 aircraft, which was en route from Spokane, Washington, to Biggs Air Force Base. The witness reported observing two objects, described as silver or white in color with an indistinguishable shape. The objects were sighted under the nose of the aircraft, moving on a heading of 337° true, and were described as having excessive speed compared to the aircraft. The duration of the sighting was approximately three seconds. The pilot's co-pilot, a 1st Lieutenant, was also present on the flight deck, but the objects were sighted only by the pilot. An immediate scan by other crew members yielded negative results. The weather conditions at the time were reported as CAVU (Ceiling and Visibility Unlimited). The report notes that there was no evidence of fatigue among the crew members. The official conclusion reached by the evaluating agency was that there was insufficient data for a formal evaluation of the sighting. The document includes administrative details such as the aircraft's altitude of 9,000 feet and its own flight heading of 157° with a ground speed of 130 knots. No physical evidence, photographs, or radar data were associated with the report.