Category: 09; Radar Cases
  
Subject:    Secret Report: Unidentified Radar Return
Date:        April 4, 1952
Location:  Duncanville, TX


Francis Ridge:
I had discovered MAXW-PBB9-1289 (see below) while looking for something else. It was an AIIR (Air Intelligence Information Report) about a radar sighting at Duncanville, TX . The report stated it had happened on April 5th.  Since I was working on White Sands cases I set it aside. The, a week later, I stumbled across another reference. NARA-PBB85-654 mentioned an unidentified radar return. It was marked with brackets as secret. However, it was listed as having occurred on April 8th at 2000 hours (8:00 PM). I checked the NICAP Db and it wasn't there, so I then went to the "Bluelist", the outdated PBB Unknowns. Duncanville was listed, as Item 1095, as April 5th. Finally, I went to the best source, the Comprehensive Catalog of Project Blue Book Unknowns by Brad Sparks and found this:

April 4, 1952.  Duncanville, Texas (32°38.8' N, 96°54.3' W).  8:30 p.m. (CST)  USAF Cpl. Billy D. Greer and PFC John W. Harrington of the Radar Maintenance Section, 147th AC&W Squadron, tracked unidentified target by FPS-10 radar first to the NW at 310°-315° azimuth at about 70 nautical miles (80 miles) moving at high speed of about 2,160 knots (2,500 mph) until it disappeared off the scope at maximum range of 260 n.mi. (300 miles).  Height-finder reading not taken, estimated at 42,000+ ft due to radar beam coverage at max range.  (Jan Aldrich;  FUFOR Index)    


For reports, documentation, analysis or discussions - see below:
 
UFO Tracked on Radar at 2160 mph; April 4, 1952; Duncanville, TX - BB Microfilm - Dan Wilson
Project Blue Book Archives - MAXW-PBB9-1289
Project Blue Book Archives - NARA-PBB85-654
The Texas Sightings

NICAP Home Page