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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.

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

BEACON STIME	TARGET REPORTS	RANGE	11/18/86	PAGE	14
AOF	DEG	Q	BEACON	ALT	QUA	SYB
SUBSYS = 1 TOTAL = 2:46:51.820	1 MODE C TOTAL = 52.87	935	82	7	1200-3	85-3	RB	1
SUBSYS = 1 TOTAL = 2:47:03.664	1 MODE C TOTAL = 53.37	940	83	7	1200-3	83-3	RB	1
SUBSYS = 1 TOTAL = 2:47:15.691	1 MODE C TOTAL = 53.50	960	84	7 RT	1
	53.87	955	83	0	1200-3	82-3	BT	1
SUBSYS = 1 TOTAL = 2:47:27.776	2 MODE C TOTAL = 54.37	966	84	7	1200-3	80-3	RB	1
SUBSYS = 1 TOTAL = 2:47:39.468	1 MODE C TOTAL = 103.37	805	70	7 RT	1
	54.87	976	85	7	1200-3	78-3	RB	1
SUBSYS = 1 TOTAL = 2:47:51.868	2 MODE C TOTAL = 55.37	977	85	7	1200-3	76-3	RB	1
SUBSYS = 1 TOTAL = 2:48:03.974	1 MODE C TOTAL = 55.75	995	87	7	1200-3	74-3	RB	1
SUBSYS = 1 TOTAL = 2:48:16.130	1 MODE C TOTAL = 56.00	997	87	0	4431-3	74-3	BT	1
SUBSYS = 1 TOTAL = 2:48:28.160	1 MODE C TOTAL = 56.37	1005	88	7	4431-3	70-3	RB	1
SUBSYS = 1 TOTAL = 2:48:40.246	1 MODE C TOTAL = 56.37	1021	89	7 RT	1
	56.50	1016	89	7	4431-3	66-3	RB	1
SUBSYS = 1 TOTAL = 2:48:52.327	2 MODE C TOTAL = 56.37	1028	90	7 RT	1
	56.50	1026	90	0	4431-3	64-3	BT	1
SUBSYS = 1 TOTAL = 2:49:03.973	2 MODE C TOTAL = 56.12	1035	90	7 RT	1
	121.00	89	7	7 RT	1
SUBSYS = 1 TOTAL = 2

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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.