UFO Case Directory (RADCAT): “SCR-615B Tracks UFO (BBU 809) September 21, 1950 Provincetown, Mass.”

(NICAP.org)

The whole UFO case report:

“Fran Ridge: 

Another interesting radar ‘Unidentified’ is the case of a UFO tracked by a Massachusetts Institute of Technology radar observer while in the process of conducting a weather radar project (under a contract with the U.S. Signal Corps). An extract from his letter to Major Tuttle, Staff Weather Officer, 33rd Fighter Wing, Otis Air [Force] Base, Massachusetts, explains the situation and is provided in the report synopsis by Dr. J. Allen Hynek.

Brad Sparks:

Sept. 21, 1950; Provincetown, Mass. (BBU 809) 

9:53-9:55 a.m. (EST). MIT research associate and Air National Guard Maj. Myron Herbert Ligda and Joseph V. Connelly (plus another witness) tracked on SCR-615B radar an unidentified object heading N, during MIT Weather Radar Research Group tracking of USAF flight of 2 Otis AFB F-84 jet fighters which were heading 333 degrees straight and level course at about 400 mph (IAS 250 knots) positioned at range 45 miles 105 degrees azimuth initially, at 9:50 a.m. Object detected at 9:53 a.m. on a nearly intersecting straight line course heading about 358 degrees [at about 500 mph?], F-84 pilots were warned by VHF-1 radio but could not see object due to poor visibility haze when ground radar showed object crossed about 3 miles [actually plotted about 1-1.5 miles ahead and blips ‘nearly merged’ in front of jets at 9:54:00 a.m. Object speed about 1,500 mph as it made a sharp right turn and loop of about 270 degrees about 15 g's centripetal acceleration back to the W. (Jan Aldrich; Hynek UFO Rpt pp. 139-141; etc.) 2 mines”

http://www.nicap.org/500921provincetown_dir.htm

Wikipedia article: “Signal Corps (United States Army)”:

https://en.wikipedia.org/wiki/Signal_Corps_(United_States_Army) 

Wikipedia article: “Republic F-84 Thunderjet”:

https://en.wikipedia.org/wiki/Republic_F-84_Thunderjet

Wikipedia article: “Provincetown, Massachusetts”: 

https://en.wikipedia.org/wiki/Provincetown,_Massachusetts

Related posts: 

realtvufos.blogspot.com/search?q=September+1950

realtvufos.blogspot.com/search?q=1950 

realtvufos.blogspot.com/search?q=Radar

realtvufos.blogspot.com/search?q=Radars 

P-84Bs of the 48th Fighter Squadron, 14th Fighter Group, 1948. 

(Text: Wikipedia) (wikimedia.org) (Photo: wikimedia.org)

Provincetown, Massachusetts

(Photo: Google)