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.

Projectile Sighted From RB-47/ Tracked By Air & Ground Radar
Dec. 23, 1957
Sea of Japan

Brad Sparks:
Dec. 23, 1957; Sea of Japan (BBU)
9:43 p.m. (local) (1243 Z).  RB-47 of 6901st Recon Sq [on recon patrol] intercepted by ELINT “unusual double pulsed” radar signals at 1218 Z and 1307 Z  that were evidently not UFO-related.  RB-47 airspeed 432 knots, altitude 35,000 ft.  A [meteor-like] “projectile” with long [luminous] trail was sighted by the RB-47 pilot, which passed over the tail of the RB-47 at unknown distance, traveling in an arc, disappearing with very bright explosion like flash bomb [like a meteor bolide] at relative bearing 220° and an undetermined altitude 50° elevation above aircraft at 1243 Z, RB-47 position 41°04’ N, 132°05’ E.  Apparently at same time the onboard APQ-31 bombing / navigation radar was jammed from 1243 Z to 1244 Z, RB-47 True Heading 247°.  Radar jamming signal was at True Bearing 335° to 001°;  signal was continuous, no targets could be seen and “jamming could not be tuned out.”  Misdated by BB to Dec 23.  Reported to NSA (?) and AFSSO.  (Sparks;  McDonald list;  Saunders/FUFOR Index;  Terry Colvin;  Ballester-Olmos;  BB files)  
McDonald list; FUFOR Index)

Dan Wilson:
Dec. 23, 1957; Sea of Japan E of Vladivostok (BBU)
9:34 p.m. local time. A projectile was sighted by the aircraft commander which passed over the tail of an RB-47 aircraft. It appeared to have a long trail behind and traveled in an arcing course, disappearing in a very bright explosion like a flash bomb. Radar was jammed and could not be tuned out. According to the PROJECT 10073 RECORD CARD, this was an Air-Visual, Ground-Radar, and Air-Intercept Radar sighting.

Fran Ridge:
It appears that a number of aircraft were in the area and observed an unusual light, one of which was flashing. A strange double pulse signal was intercepted and one aircraft took photos at 1218 ZULU, which means the observation was long enough to exclude a meteor. This incident at first sounded like a meteor, but the BB records seem to show more detail as to aircraft locations and times than the FUFOR entry implied. The sighting listing mentions only one incident (military air and radar) and lists as Insufficient data, which means they had problems writing this one off.

Detailed reports and documents
reports/571223seaofjapan_report.htm (Dan Wilson)
bb/NARA-PBB1-190.jpg (Fran Ridge)

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