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This Project Blue Book case file, released through The Black Vault, collects records on the 24 July 1948 sighting by two Eastern Airlines pilots of a wingless object about 20 miles southwest of Montgomery, Alabama. It contains teletype replies from military bases reporting no aircraft movements, a 1948 Project Sign special investigation report with an interview of a Robins Air Force Base witness, and a December 1948 intelligence report. It also includes newspaper extracts, a Harvard College Observatory letter and Hynek's Project Grudge evaluation index.
“The Wash”11 pages
Trip 573 checked Blackstone, Va. at 0219, July 24, 1948 Estimated Raleigh-Durham, N. C. at 0259 Flight Plan VFR Washington to Raleigh-Durham direct. Weather at Blackstone at 0230 D/ 70 D 4GF 112/73/72/ wsw5/967 Greensboro and Raleigh-Durham both had D/ 15 plus.
Shortly after checking Blackstone and as near as we can place the time, approximately 0230, we picked up a trail that appeared to be a jet or rocket trail traveling at a terrific speed.
The object leaving the trail was traveling in a southwesterly direction, and as nearly as we can place the degree of travel, $ 2 3 0^{\circ} $ . Our heading at the time was $ 2 1 5^{\circ} $ .
The trail at no time crossed our flight path. It was on the distant western horizon at approximately 20$ ^{\circ}$ above the horizon. The trail covered an 80$ ^{\circ}$ to 90$ ^{\circ}$ arc laterally. Document, cited by the archive. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 162 pages are in the text index: search them above, or from the library's search.