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Radar computer printout, continuous data recording

FAA via National Archives / The Black Vault · 179 pages · text by GLM-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 50 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…

Read from the scan by GLM-OCR; expect the odd misread word.

SUBSYS = 1	TOTAL=	5 MODE C TOTAL=	3
2:47:39.757 1200 1200 47	2183 191 29.93 -5.42 -29.57 192 36.31 99 99 45 130	1200 1200 47	2183 191 29.93 -5.42 -29.57 192 36.31 99 99 45 130	1200 1200 47	2183 191 29.93 -5.42 -29.57 192 36.31 99 99 45 130	1200 1200 47	2183 191 29.93 -5.42 -29.57 192 36.31 99 99 45 130	1200 1200 47	2183 191 29.93 -5.42 -29.57 192 36.31 99 99 45 130	1200 1200 47	2183 191 29.93 -5.42 -29.57 192 36.31 99 99 45 130	1200 1200 47	2183 191 29.93 -5.42 -29.57 192 36.31 99 99 45 130
2:47:39.131	-6.53	-29.65
2:47:47.025	-9.37	0156 0155 47	2312 203 22.50 -9.23 -22.92 223 22.99 153 73 64 170	0156 0155 47	2312 203 22.50 -9.23 -22.92 223 22.99 153 73 64 170	0156 0155 47	2312 203 22.50 -9.23 -22.92 223 22.99 153 73 64 170	0156 0155 47	2312 203 22.50 -9.23 -22.92 223 22.99 153 73 64 170	0156 0155 47	2312 203 22.50 -9.23 -22.92 223 22.99 153 73 64 170	0156 0155 47	2312 203 22.50 -9.23 -22.92 223 22.99 153 73 64 170	0156 0155 47	2312 203 22.50 -9.23 -22.92 223 22.99 153 73 64 170
2:47:47.027	19.99	2.26
2:47:47.229	24.75	1.70
2:47:47.737	19.99	2.39
2:47:47.737	21.57	-7.39
2:47:48.529	21.57	-7.39
SUBSYS = 1	TOTAL=	-11.71
2:47:50.795 1220	45
2:47:50.795	-5.20	-29.32
2:47:50.795	2073-1607	1200	12
2:47:51.239	-5.52	-29.94
2:47:51.239	-9.95	-20.67
2:47:59.116 0000	21
2:47:59.116	19.99	2.23
2:47:59.119 1547	45
2:47:59.120	24.10	2.25
2:47:59.120	0041-1614	1547	12
2:47:59.120	23.92	2.57
2:47:59.120 1271	47
2:48:00.525 -7.35
2:48:00.525 0162	47
SUBSYS = 1	TOTAL=	-12.24
2:48:02.355 3 MODE C TOTAL=	3
2:48:02.355	-9.37	-20.37
2:48:02.355 1200	1200	27
2:48:10.998	-5.52	-29.95
2:48:10.998 0000	15
2:48:10.998	22.00	2.15
2:48:10.998 1547	1547	27
2:48:11.706	23.70	2.50
2:48:11.706 1271	1271	47
2:48:12.395	21.56	-7.32
2:48:12.395 0152	45
2:48:12.396	16.45	-12.42
2:48:12.396	0075-1614	0162	12
SUBSYS = 1	TOTAL=	-12.34
2:48:14.554 0156	0166	47
	-7.92	-20.01
 1200	1200	37
	-5.12	-29.50

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Document, cited by the archive. The PDF is mirrored here; the original link is above. The text was read from the page images by GLM-OCR; expect the odd misread word. 179 pages are in the text index: search them above, or from the library's search.