The 1952 Washington, D.C. UFO Incident: Analysis of Project Blue Book Records

The Washington National Airport Sightings

In July 1952, the United States experienced what is now referred to as the 'Washington Flap,' a series of unidentified aerial phenomena sightings that culminated in a high-profile encounter over the nation's capital. The incident began on the night of July 19, 1952, when air traffic controllers at Washington National Airport observed multiple unidentified blips on their radar screens. These objects were tracked moving at speeds and performing maneuvers that defied the capabilities of contemporary aircraft. Simultaneously, pilots in the vicinity reported visual sightings of bright, fast-moving lights.

Military and Government Response

The situation escalated on the weekend of July 26–27, 1952, when radar at both Washington National Airport and Andrews Air Force Base tracked objects hovering over restricted airspace, including the White House and the Capitol. The U.S. Air Force scrambled F-94 interceptors to investigate, but the objects reportedly outpaced the jets or vanished from radar as the aircraft approached, only to reappear once the interceptors departed. The intensity of the sightings forced the Air Force to hold a press conference—the largest since World War II—to address public concern. While the official explanation eventually attributed the radar returns to temperature inversions and the visual sightings to misidentified stars or meteors, the incident remains a cornerstone of UAP research due to the corroboration between ground radar and pilot testimony. The event prompted the CIA to form the Robertson Panel to evaluate the threat posed by UAP, marking a significant shift in how the U.S. government handled anomalous aerial reports during the Cold War era.