Incident #209 Sighting Report — South Korea, 4 November 1948

This document details Incident #209, which occurred on 4 November 1948 in South Korea. An unidentified aircraft was observed at 1043 hours by Army observation posts #1, #2, #4, and #5. The aircraft was described as a twin-engine bomber flying from east to west at an altitude of 5,000 feet. The object was reported to have circled observation post number 2 before heading north. The incident was subsequently investigated by the Air Materiel Command. The final official conclusion stated that there was no astronomical explanation for the sighting and that the object had been independently identified as a Soviet aircraft. The document includes various administrative forms, including an incident summary sheet and a memorandum from the Air Weather Service at Andrews Air Force Base to the Commanding General of the Air Materiel Command at Wright-Patterson Air Force Base, dated 11 May 1949. This memorandum references the review of incident summaries 173 through 233 against routine weather-balloon ascents and provides recommendations for improving the 'Guide to Investigation of Unidentified Aerial Objects,' specifically regarding the clarification of flight direction and radar settings.