Radar computer printout, continuous data recording

FAA via National Archives / The Black Vault · 179 pages · text by OCR

This FAA Alaskan Region Public Affairs Office release, dated March 5, 1987, is a computer printout of recorded FAA radar data for Japan Air Lines Flight 1628 on November 17, 1986. It covers 38 minutes of computer time and lists 105 radar returns. Of these, 86 are usable and 19 are uncorrelated primary returns. The printout records when the pilot first asked about other traffic and when he said he could not see the UFO. It also explains that uncorrelated returns occur when the primary and beacon signals do not match in position.

Open the PDF at page 71 Original source ↗

“Japan Air Lines Flight 1628”3 pages

p. 3 …COMPUTER CDR PRINTOUT Reference to Japan Air Lines Flight #1628 November 17, 1986, 5:19 pm…
p. 20 …the intermittent radar images of Japan Air Lines flight 1628, on November 17, 1986, which occured…
p. 163 COMPUTER CDR PRINTOUT Reference to Japan Air Lines Flight #1628 November 17, 1986, 5:19 pm…

HADAR ONLY TARGET REPORTS

STIME RANGE AGP DEG Q BEAGON ALT IAGE SYS

2:56:09.184 149.75 2158 189 7 RT 1

159.62 2159 190 7 RT 1

SUBSYS = 1 TOTAL = 6

2:55:19.717 143.97 1954 172 7 RT 1

144.00 1972 173 7 RT 1

2:56:20.084 144.00 2072 182 7 RT 1

159.75 2159 190 7 RT 1

SUBSYS = 1 TOTAL = 4

2:56:31.729 143.87 1956 172 7 RT 1

144.00 1976 173 7 RT 1

144.12 2019 177 7 RT 1

144.12 2050 191 7 RT 1

2:56:32.103 149.75 2159 189 7 RT 1

159.75 2169 190 7 RT 1

SUBSYS = 1 TOTAL = 6

2:55:43.691 143.37 1957 172 7 RT 1

144.37 1977 173 7 RT 1

144.00 2020 177 7 RT 1

141.37 2052 191 7 RT 1

147.75 2050 191 7 RT 1

2:56:44.128 149.75 2159 189 7 RT 1

159.75 2157 190 7 RT 1

SUBSYS = 1 TOTAL = 7

2:55:55.772 144.25 1959 173 7 RT 1

143.87 1955 172 7 RT 1

2:56:56.147 144.25 2072 192 7 RT 1

149.75 2159 189 7 RT 1

159.75 2153 190 7 RT 1

SUBSYS = 1 TOTAL = 5

2:57:07.792 143.87 1956 172 7 RT 1

144.12 1973 173 7 RT 1

144.00 2054 191 7 RT 1

2:57:09.293 159.75 2159 190 7 RT 1

149.75 2159 199 7 RT 1

SUBSYS = 1 TOTAL = 5

2:57:19.593 143.87 1955 172 7 RT 1

144.25 1976 173 7 RT 1

2:57:20.006 144.12 2016 177 7 RT 1

144.00 2054 191 7 RT 1

149.75 2159 199 7 RT 1

159.75 2159 190 7 RT 1

SUBSYS = 1 TOTAL = 6

2:57:31.552 143.75 1957 172 7 RT 1

144.72 1997 174 7 RT 1

2:57:32.404 159.75 2159 190 7 RT 1

SUBSYS = 1 TOTAL = 3

2:57:43.741 134.75 1939 170 7 RT 1

144.00 2050 191 7 RT 1

2:57:44.494 159.75 2169 190 7 RT 1

SUBSYS = 1 TOTAL = 3

2:57:55.755 143.97 1956 172 7 RT 1

2:57:56.147 144.00 2051 191 7 RT 1

149.75 2159 199 7 RT 1

Cited by

Japan Air Lines Flight 1628: The Alaska Mothership 1986

About this file

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. 179 pages are in the text index: search them above, or from the library's search.