Wednesday, 31 October 2018

UFO Case Directory
“UFO Buzzes DC-3
Jan. 20, 1951
Sioux City, Iowa”


The whole UFO case report:
Fran Ridge:
Not listed as an ‘Unknown’ by Project Blue Book, this case was important to the Air Force. Blue Book Captain Ed Ruppelt said that, ‘it didn’t take an expert to see that a B-36, even one piloted by an experienced idiot, could not do what the UFO had done - buzz a DC-3 that was in an aircraft traffic pattern.’ That was the AF explanation and the case was closed.

Brad Sparks:
Jan. 20, 1951; Sioux City, Iowa (BBU)
9:20-9:26 p.m. (CST). Capt. Lawrence W. Vinther, copilot James F. Bachmeier, passengers AF Colonel and aide, and CAA tower controller John M. Williams. At 9:20 the 2 CAA tower controllers sighted light in the W [NW?]. After Vinther’s Mid-Continent Airlines DC-3 took off, he was asked by the tower to look for light, then while still in a climbing 360° turn at about 1,000 ft they spotted object to the NNW at about 8,000 ft and 4 miles away that looked like a B-29 fuselage with wings but no engines, which blinked some lights like running lights. Object came at the DC-3, flew across the nose within 200 ft, they had to turn their heads to follow it then suddenly found it instantly appeared on the other side again, paralleled them for 2-3 secs, then flew under them and disappeared in 2-3 secs to the NW. (Battelle Unknown No. 3; cf. NARCAP)”

NOTE: The BBU catalogue (mentioned in Sparks’ text) is Brad Sparks’ Comprehensive Catalog of 1,700 Project Blue Book UFO Unknowns: Database Catalog (Not a Best Evidence List) (

Five observers (airline pilots and multiple tower operators) witnessed the UFO incident. No radar return of the unknown object was registered. presents U.S. government (U.S. Air Force) documents (that include several news articles) that pertain to the UFO case.

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Satellite photo of Sioux City, Iowa (
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