RADCAT Case Directory
  Category 9, RADAR  
Rating: 5  


RADCAT is a revitalized special project now being conducted jointly by NICAP & Project 1947 with the help and cooperation of the original compiler of RADCAT, Martin Shough, to create a comprehensive listing of radar cases with detailed documentation from all previous catalogues, including UFOCAT and original RADCAT.

F-94 Pilots Tracked Object For 90-Seconds
Aug. 5-6, 1952
Haneda AFB, Japan

Updated: May 10, 2007; March 15, 2010
Francis Ridge:

This is an extremely important case, one which I would include in a summary of most important UFO incidents. This wasn't on the Jan 26, 1953 Chop clearance list, but Ruppelt's sources were impressed. And it was listed as "Unknown" by the Air Force, Case Number 1857! And if that's not enough, check out what Ruppelt had to say. The update on this case is the 25 BB documents found by Dan Wilson below.

Brad Sparks:
Aug. 5-6, 1952; Haneda AFB, Japan (BBU 1827)
11:30 p.m. USAF F-94 jet interceptor pilots 1st Lt. W. R. Holder, 1st Lt. A. M. Jones, and Haneda control tower operators. Airborne radar tracked a target for 90 secs. Control tower operators watched 50-60 mins while a dark shape with a light flew as fast as 330 knots (380 mph), hover, fly curves and perform a variety of maneuvers, at one point splitting into 3 targets [?]. 50-60 mins. (Berliner)

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