Simulated radar data, colour photos

FAA via National Archives / The Black Vault · 19 pages · text from the file's own layer

This FAA release, obtained through The Black Vault, collects material on the radar data from Japan Air Lines Flight 1628 over Alaska on November 17, 1986. It includes a March 5, 1987 explanation by FAA public affairs officer Paul Steucke, a February 1987 Airway Facilities memo, and Dennis Simantel's analysis attributing the returns to uncorrelated primary and beacon targets, considered normal. It also contains regenerated radar image photos and a Philadelphia Inquirer magazine article on the sighting and the FAA's inconclusive review.

Open the PDF at page 7 Original source ↗

“split”5 pages

p. 5 …Description of Radar Split Image; AAL-5 Meno of 2/5/87 From Manager, Airway Facilities…
p. 10 …The object on radar was now thought to be an accidental split image of the JAL…
p. 11 …dot - looking just like "a • split beacon," an accidental split image, • of the airliner. Shadowing, it…
p. 12 …Steucke had split for Alaska 12 years make out the United airliner. The two The FAA…
p. 14 …What may have caused the split beacon was not determined. But both Steucke and Elias agreed…

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Japan Air Lines Flight 1628: The Alaska Mothership 1986

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Document, cited by the archive. The PDF is mirrored here; the original link is under it. 19 pages are in the text index: search them above, or from the library's search.