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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	11/18/86	PAGE	10 SYS
RANGE	ACP	DEG	Q
SUBSYS = 1 TOTAL = 2:34:25.911	103.25	806	70	7 RT	1
50.25	870	76	7 RT	1
48.62	900	79	7	1200-3	98-3	RB	1
3 MODE C TOTAL = 1
SUBSYS = 1 TOTAL = 2:34:38.377	50.25	890	78	7 RT	1
48.75	905	79	7	1200-3	107-3	RB	1
2 MODE C TOTAL = 1
51.12	892	78	7 RT	1
SUBSYS = 1 TOTAL = 2:34:50.359	49.12	904	79	7 RT	1
49.25	902	79	0	1200-3	103-3	BT	1
36.87	1033	90	0	4441-1	6-3	BT	1
4 MODE C TOTAL = 2
SUBSYS = 1 TOTAL = 2:35:02.111	51.50	884	77	7 RT	1
49.87	902	79	0	1200-3	70-3	BT	1
36.67	1030	90	0	4441-3	6-3	BT	1
3 MODE C TOTAL = 2
SUBSYS = 1 TOTAL = 2:35:14.133	50.50	898	76	7 RT	1
51.12	876	76	7 RT	1
50.75	893	78	0	1200-3	33-3	BT	1
36.87	1029	90	0	0000-0 BT	1
SUBSYS = 1 TOTAL = 2:35:26.222	50.37	865	76	7 RT	1
51.25	901	79	7	1200-3	50-3	RB	1
36.87	1029	90	0	0000-0 BT	1
3 MODE C TOTAL = 1
SUBSYS = 1 TOTAL = 2:35:26.598	49.87	878	77	7 RT	1
51.37	911	80	7 RT	1
51.12	908	79	0	1200-3	68-3	BT	1
36.75	1029	90	0	4441-3 BT	1
SUBSYS = 1 TOTAL = 2:35:38.427	49.87	878	77	7 RT	1
51.37	911	80	7 RT	1
51.12	908	79	0	1200-3	81-3	RB	1
36.75	1029	90	0	4441-3	6-3	BT	1
SUBSYS = 1 TOTAL = 2:35:50.511	50.25	892	78	7 RT	1
50.62	913	80	7	1200-3	81-3	RB	1
36.75	1029	90	0	4441-3	6-3	BT	1
3 MODE C TOTAL = 2
SUBSYS = 1 TOTAL = 2:36:02.156	103.37	805	70	7 RT	1
49.75	900	79	7 RT	1
50.12	913	80	7	1200-3 RB	1
36.75	1030	90	0	4465-3	484-3	ID	BT
SUBSYS = 1 TOTAL = 2:36:14.612	4 MODE C TOTAL = 1
50.12	905	79	7	1200-3	58-3	RB	1
36.87	1030	90	0	4441-1 BT	1
3 MODE C TOTAL = 1
SUBSYS = 1 TOTAL = 2:36:26.322	50.50	892	78	7	1200-3	33-3	RB	1
36.87	1024	90	0	1200-3 BT	1
36.62	1029	90	0	1200-1 BT	1
3 MODE C TOTAL = 1
SUBSYS = 1 TOTAL = 2:36:38.538	50.62	878	77	7	1200-3	60-3	RB	1
50.25	916	80	7 RT	1
36.75	1028	90	0	4441-1 BT	1
36.50	1029	90	0	0000-0 BT	1
SUBSYS = 1 TOTAL = 2:36:50.625	4 MODE C TOTAL = 1
50.75	869	76	7	1200-3	88-3	RB	1
36.50	1022	89	0	0000-0 BT	1
3 MODE C TOTAL = 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.