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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 TARGET REPORTS STIME	RANGE	ACP	DEG	Q	11/16/86	PAGE	QUA	SYS
BEACON	ALT
2:23:23.289	99.62	271	23	7 RT	1
	99.75	266	23	0	1550-3	350-3 BT	1
2:23:25.169	35.00	932	81	0	0260-3 BT	1
SUBSYS = 1 TOTAL =	4 MODE C TOTAL = 2
2:23:34.944	60.37	165	14	7	1200-3	75-3 RB	1
2:23:35.320	98.12	270	23	7	1550-3	350-3 RB	1
2:23:37.200	35.12	928	81	0	0260-3 BT	1
2:23:37.575	36.87	1034	90	0	1200-3 BT	1
SUBSYS = 1 TOTAL =	4 MODE C TOTAL = 2
2:23:47.040	61.00	163	14	7	1200-3	75-3 RB	1
2:23:47.414	96.62	274	24	7	1550-3	350-3 RB	1
2:23:49.291	35.00	927	81	0	0260-3 BT	1
	36.62	1030	90	0	1200-3 BT	1
SUBSYS = 1 TOTAL =	4 MODE C TOTAL = 2
2:23:58.936	61.50	161	14	7	1200-3 RB	1
2:23:59.443	95.25	283	24	7 RT	1
2:24:01.572	95.12	279	24	0	1550-3	350-3 BT	1
SUBSYS = 1 TOTAL =	4 MODE C TOTAL = 1
2:24:10.961	62.12	155	13	7	1200-3	75-3 RB	1
	62.25	168	14	0	1200-3	75-3 BT	1
2:24:11.462	93.50	282	24	7	1550-3	350-3 RB	1
2:24:13.593	35.75	1015	89	0	1200-3	11-3 BT	1
SUBSYS = 1 TOTAL =	4 MODE C TOTAL = 4
2:24:23.047	62.75	160	14	7	1200-3	75-3 RB	1
2:24:23.422	92.00	266	25	7	1550-3	350-3 RB	1
2:24:25.301	35.25	1012	88	0	1200-3	14-3 BT	1
SUBSYS = 1 TOTAL =	3 MODE C TOTAL = 3
2:24:35.072	63.37	158	13	7	1200-3	75-3 RB	1
2:24:35.447	90.62	295	25	7 RT	1
	90.37	293	25	7	1550-3	350-3 RB	1
SUBSYS = 1 TOTAL =	3 MODE C TOTAL = 2
2:24:47.090	64.00	156	13	7	1200-3	75-3 RB	1
2:24:47.466	68.67	298	26	7	1550-3	350-3 RB	1
SUBSYS = 1 TOTAL =	2 MODE C TOTAL = 2
2:24:59.110	64.62	155	13	7	1200-3	74-3 RB	1
2:24:59.487	87.37	304	26	7	1550-3	350-3 RB	1
2:25:01.741	48.12	1025	90	7	1200-3 RB	1
SUBSYS = 1 TOTAL =	3 MODE C TOTAL = 2
2:25:10.951	65.12	155	13	7 RT	1
	65.25	154	13	7	1200-3	74-3 BT	1
2:25:11.325	85.87	307	26	0	1550-3	351-3 BT	1
2:25:13.579	48.37	1018	89	7	1200-3	114-3 RB	1
SUBSYS = 1 TOTAL =	4 MODE C TOTAL = 3
2:25:22.980	65.75	153	13	7	1200-3	74-3 RB	1
2:25:23.460	84.37	314	27	7	1550-3	350-3 RB	1
2:25:25.669	48.62	1011	88	0	1200-3	112-3 BT	1
SUBSYS = 1 TOTAL =	3 MODE C TOTAL = 3
2:25:35.071	66.37	150	13	0	1200-1 BT	1
	66.50	154	13	7	1200-3 RB	1
2:25:35.446	82.87	319	28	7	1550-3	350-3 RB	1
2:25:37.700	48.87	996	87	7	1200-3	109-3 RB	1

About this file

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.