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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	11/18/86 BEACON	ALT	PAGE	8 SYS
 50.25	886	77	7 RT	1
	2:29:25.875	35.00	999	87	0	0162-3 BT	1
	2:29:26.250	37.00	1035	90	0	1200-3 BT	1
SUBSYS = 1	TOTAL = 5 MODE C TOTAL = 2
	2:29:36.369	54.75	494	43	7	1550-3	350-3	RB	1
	2:29:37.517	50.00	879	77	7 RT	1
 49.62	884	77	7	1200-3	101-3	RB	1
	2:29:38.268	36.75	1033	90	0	1200-3 BT	1
SUBSYS = 1	TOTAL = 4 MODE C TOTAL = 2
	2:29:48.598	53.62	507	44	7	1550-3	350-3	RB	1
	2:29:49.727	49.25	877	77	7 RT	1
 50.25	893	78	7	1200-3	45-3	RB	1
	2:29:50.226	36.37	1025	90	0	1200-3 BT	1
 36.50	1019	89	0	1200-3	6-3	BT	1
SUBSYS = 1	TOTAL = 5 MODE C TOTAL = 3
	2:30:00.313	99.12	381	33	7 RT	1
	2:30:00.689	52.37	522	45	7	1550-3	350-3	RB	1
	2:30:01.814	48.75	887	77	7 RT	1
 51.00	900	79	0	1200-3	61-3	BT	1
	2:30:02.192	36.00	1020	89	0	1200-3	8-3	BT	1
SUBSYS = 1	TOTAL = 5 MODE C TOTAL = 3
	2:30:12.711	51.12	536	47	7	1550-3	350-3	RB	1
	2:30:13.836	48.12	896	78	7 RT	1
 51.00	912	80	7	1200-3	79-3	RB	1
	2:30:14.213	35.62	1018	89	0	1200-3	10-3	BT	1
SUBSYS = 1	TOTAL = 4 MODE C TOTAL = 3
	2:30:24.769	50.00	549	48	0	1550-3	350-3	BT	1
	2:30:25.916	48.75	897	78	7 RT	1
 50.75	911	80	7 RT	1
 50.62	919	80	0	1200-3	94-3	BT	1
	2:30:26.291	35.12	1008	88	0	1200-3	12-3	BT	1
SUBSYS = 1	TOTAL = 5 MODE C TOTAL = 3
	2:30:36.872	48.87	567	49	0	1550-3	350-3	BT	1
	2:30:37.999	50.12	920	80	7	1200-3	101-3	RB	1
SUBSYS = 1	TOTAL = 2 MODE C TOTAL = 2
	2:30:48.958	47.62	579	50	0	1550-3 BT	1
 47.75	587	51	7	1550-3	350-3	RB	1
	2:30:49.710	50.62	897	78	7 RT	1
 49.62	912	80	7	1200-3	103-3	RB	1
SUBSYS = 1	TOTAL = 4 MODE C TOTAL = 2
	2:31:00.862	46.37	594	52	0	1550-3	350-3	BT	1
	2:31:01.965	49.62	905	79	7 RT	1
 49.87	904	79	0	1200-3	77-3	BT	1
SUBSYS = 1	TOTAL = 3 MODE C TOTAL = 2
	2:31:13.256	44.87	607	53	7	1550-3	350-3	RB	1
	2:31:14.006	50.37	892	78	7	1200-3	30-3	RB	1
SUBSYS = 1	TOTAL = 3 MODE C TOTAL = 2
	2:31:36.985	41.87	615	54	0	1550-3	349-3	BT	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.