Which agency documented the Washington D.C. UFO Flap — Capitol Airspace case?

DoD is the primary agency that documented this UAP incident, indexed as file DOD-011 in the Now Declassified archive. The original source context is available via NARA RG 615 / OSD.

Where did the Washington D.C. UFO Flap — Capitol Airspace UAP sighting occur?

The Washington D.C. UFO Flap — Capitol Airspace incident occurred in Washington D.C. / Capitol Airspace, USA in 1952. The region classification is North America.

What shape was the UAP in the Washington D.C. UFO Flap — Capitol Airspace incident?

The UAP documented in the Washington D.C. UFO Flap — Capitol Airspace incident was classified as disc / saucer shaped. Classification: CONFIDENTIAL. Altitude: ~7,000 ft.

HOME›INCIDENTS›DOD-011

CONFIDENTIAL

DOD-011 · 1952-07-19

Washington D.C. UFO Flap — Capitol Airspace

Q: What behaviors were observed in the Washington D.C. UFO Flap — Capitol Airspace case?

Observed behaviors in the Washington D.C. UFO Flap — Capitol Airspace incident included: Formation / Group, Rapid Acceleration, Instant Disappearance. Duration: ~6 hours (July 19–20); repeated July 26–27, 1952. Witnesses: Washington National Airport radar controllers, Civil Aeronautics Administration, USAF Air Defense Command pilots, commercial airline crew.

DOD-011is this archive's internal reference, not an official government file number, and the CONFIDENTIAL tag is an editorial archival label — not a current U.S. classification. Now Declassified is an independent index and is not affiliated with the U.S. government. See the original records via NARA RG 615 / OSD.

DoD◎ Washington D.C. / Capitol Airspace, USA◌ North America #1952 ◈ Disc / Saucer↑ ~7,000 ft⏱ ~6 hours (July 19–20); repeated July 26–27, 1952

EVIDENCE GALLERY

Visual reconstruction and recovered media extracted from the incident dossier. This case includes still evidence and analytical reconstruction.

Representative official gallery image traced to an official public-source archive

Cinematic archive imagery for Washington D.C. UFO Flap — Capitol Airspace — intelligence record illustration

DoDDISC / SAUCER

ARCHIVE GALLERY

DOD-011NORTH AMERICA

Recovered visual evidence

MEDIA STATUS

Official gallery media is shown as representative archive context for this case.

SOURCE TYPE

Witness testimony, radar language, and dossier reconstruction.

VIEW MODE

Still view highlights silhouette, environment, and encounter geometry.

AT A GLANCE

Multiple unidentified objects were tracked on radar at Washington National Airport and Andrews AFB on two separate weekends in July 1952. USAF interceptors were scrambled twice; objects vanished when jets arrived and returned when jets departed. This prompted the largest Air Force press conference since World War II and remains one of the best-documented mass radar UAP events in U.S. history.

PRIMARY WITNESSES

Washington National Airport radar controllers, Civil Aeronautics Administration, USAF Air Defense Command pilots, commercial airline crew

EVIDENCE PROFILE

VISUAL RECONSTRUCTIONDISC / SAUCER

FILE ID

DOD-011

DATE

1952-07-19

AGENCY

DoD

REGION

North America

SHAPE

Disc / Saucer

ALTITUDE

~7,000 ft

OBSERVED BEHAVIORS

Formation / GroupRapid AccelerationInstant Disappearance

DECLASSIFIED DETAILS

On the night of July 19–20, 1952, radar operators at Washington National Airport (now Reagan National) detected seven unknown objects moving erratically over restricted airspace near the Capitol and the White House. The objects were simultaneously tracked on Andrews Air Force Base radar. Airline pilots in the area visually confirmed the objects as bright fast-moving lights. USAF F-94 Starfire interceptors were scrambled; each time jets arrived, the objects vanished from radar and visual range. When jets returned to base, the objects reappeared. The event repeated on July 26–27, attracting even larger radar tracks. The Air Force held a press conference — the largest since WWII — attributing the sightings to 'temperature inversion' causing radar ducting. Civil Aeronautics Administration technical staff publicly disputed this explanation as inconsistent with the radar presentation. The Project Blue Book special report on this event (now in the NARA archive set) notes that 'temperature inversions of the magnitude required to produce the observed radar returns were not present on either night.' The 2026 archive release includes previously unprocessed Air Defense Command scramble logs and the National Security Council briefing summary prepared for President Truman.

KEY CHARACTERISTICS

›Tracked simultaneously on Washington National and Andrews AFB radar
›USAF scrambles twice — objects vanished upon jet arrival
›Objects returned each time jets returned to base
›Civil aeronautics staff disputed official temperature inversion explanation
›Project Blue Book special report acknowledged inversions were not present
›NSC briefing prepared for President Truman — in 2026 archive release

ORIGINAL SOURCE

This incident is indexed as file DOD-011inside Now Declassified's research layer. The nearest official source trail for this agency points to NARA RG 615 / OSD, where archive records, imagery, or supporting context are published for public review.

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INCIDENT DATA

FILE IDDOD-011

DATE1952-07-19

YEAR1952

AGENCYDoD

LOCATIONWashington D.C. / Capitol Airspace, USA

REGIONNorth America

SHAPEDisc / Saucer

ALTITUDE~7,000 ft

DURATION~6 hours (July 19–20); repeated July 26–27, 1952

WITNESSESWashington National Airport radar controllers, Civil Aeronautics Administration, USAF Air Defense Command pilots, commercial airline crew

OBSERVED BEHAVIORS

Formation / Group→Rapid Acceleration→Instant Disappearance→

EVIDENCE STRENGTH

MODERATE

Video Record

Still Imagery

Witness Credibility

Sensor Corroboration

Physical Evidence

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ARCHIVE EXPORT

RESEARCH GUIDES

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Cinematic archive imagery for White Sands Missile Range UAP Observations — Clyde Tombaugh — intelligence record illustration

DoD

ARCHIVE GALLERY

DOD-092NORTH AMERICA

White Sands Missile Range UAP Observations — Clyde Tombaugh

DoD◎ Disc / Saucer

UNCLASSIFIED

DOD-092 · 1949-08-20

White Sands Missile Range UAP Observations — Clyde Tombaugh

◎White Sands Missile Range, New Mexico, USA

Dr. Clyde Tombaugh, discoverer of the dwarf planet Pluto and a leading observational astronomer working at White Sands Missile Range, formally reported observing a fast-moving rectangular formation of lights on August 20, 1949. Tombaugh also made additional observations from his home in Las Cruces. His formal reports to the USAF and to Project Blue Book are preserved in government archives. Tombaugh stated the objects moved with 'precision control.'

RAPID ACCELERATIONFORMATIONDISAPPEARED INSTANTLY

Farmington New Mexico — Fleet of 500 Discs

DoD◎ Disc / Saucer

UNCLASSIFIED

DOD-040 · 1950-03-17

Farmington New Mexico — Fleet of 500 Discs

◎Farmington, New Mexico, USA

Approximately 500 Farmington, New Mexico residents simultaneously observed a massive fleet of hundreds of disc-shaped objects flying in formation overhead for 30 minutes. Three local newspaper reporters independently witnessed the event and filed reports. The objects were documented at high altitude traveling at high speed in formation, with individual objects breaking formation and rejoining. Project Blue Book declined to investigate.

FORMATIONHOVERINGRAPID ACCELERATION

Edwards AFB — Test Pilots and Tower Report Disc

DoD◎ Disc / Saucer

CONFIDENTIAL

DOD-043 · 1965-10-07

Edwards AFB — Test Pilots and Tower Report Disc

◎Edwards Air Force Base, California, USA

Edwards AFB control tower controllers and multiple F-104 Starfighter test pilots observed a metallic disc maneuvering over the base at high altitude. The object was tracked visually by tower personnel and by pilots in flight. Project Blue Book investigated and logged the case as 'unidentified.' The encounter is notable for occurring at the USAF's primary aircraft test facility with multiple trained military aviators as witnesses.

HOVERINGRAPID ACCELERATIONDISAPPEARED INSTANTLY

PARTIAL

◈ MEDIA

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