Project 10073 Record Card and Air Intelligence Information Report — Goose AB, Labrador, 20 September 1952

This document consists of a Project 10073 record card and an accompanying Air Intelligence Information Report (IR-49-52) regarding an unidentified aerial phenomenon observed on 20 September 1952 at Goose Air Base, Labrador. The report details an incident where a GCA (Ground Controlled Approach) radar unit detected an unidentified target while tracking aircraft 5495 on its final approach. The radar signal was described as strong and clear, resembling an aircraft. The target was observed moving from North to South at approximately 120 miles per hour. The pilot of the nearby aircraft 5495 was contacted but reported that he sighted nothing. The report notes that all other aircraft in the area were accounted for. The object was estimated to be at an altitude of less than 4000 feet, a limitation imposed by the GCA radar unit's capabilities. The object had no visible lights, and all sightings were electronic. Weather conditions at the time were reported as scattered clouds at 4500 feet and broken clouds at 6500 feet, with 30 miles of visibility. The report concludes with the classification of the event as 'Other (Possible Weather Echo)' and notes that the target was not considered a duplicate ground clutter return. The document was authored by Major Truett V. Cantrell of the Air Technical Intelligence Center and approved by Lt. Colonel Fred W. Siebert.