Project 10073 Record Card — Roslyn Harbor, New York, 10 March 1958

This document is a Project 10073 record card detailing a sighting that occurred on March 10, 1958, in Roslyn Harbor, Long Island, New York. The report describes a single object observed by a civilian for a duration of five minutes. The witness reported seeing a small, round, white spot with a bright white flashing light, which was moving very slowly from the southwest to the northeast at a high altitude. The weather conditions at the time were described as dark and clear. The report notes that the observer was familiar with aircraft landing lights and explicitly stated that the object observed did not match those. Despite this, the official conclusion reached by the evaluating authority was that the observer had undoubtedly seen an aircraft navigation light at high altitude. The investigator noted that the description provided was characteristic of aircraft reports and that the duration of the sighting was consistent with aircraft speed. The document includes supplementary notes indicating that the observer could not provide specific direction or elevation when the object was first sighted, but the final assessment remained firm in its conclusion that the object was an aircraft.