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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.

  • 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.

BEACON STIME	TARGET REPORTS	11/18/86	ALT	PAGE	13 SYS
RANGE	AGP	DEG	Q
SUBSYS = 1 TOTAL = 2:42:51.282	1 MODE C TOTAL = 1
46.62	906	79	7 RT	1
48.62	907	79	7	1200-3	33-3	RB	1
SUBSYS = 1 TOTAL = 2:43:03.367	2 MODE C TOTAL = 1 RT	1
46.87	917	80	7 RT	1
49.25	909	79	0	1200-3	56-3	BT	1
SUBSYS = 1 TOTAL = 2:43:14.699	2 MODE C TOTAL = 1 BT	1
49.37	777	68	0	1200-3 RT	1
47.75	915	80	7 RT	1
49.37	913	80	0	1200-3	69-3	BT	1
2:43:24.843	121.25	83	7	7 RT	1
4 MODE C TOTAL = 1
SUBSYS = 1 TOTAL = 2:43:27.475	49.12	922	81	0	1200-3	73-3	BT	1
49.12	922	81	0	1200-3	73-3	BT	1
SUBSYS = 1 TOTAL = 2:43:39.252	1 MODE C TOTAL = 1
48.50	931	81	0	1200-3	73-3	BT	1
SUBSYS = 1 TOTAL = 2:43:51.338	1 MODE C TOTAL = 1 RT	1
47.62	932	81	7 RT	1
47.75	928	81	0	1200-3	71-3	BT	1
47.75	928	81	0	1200-3	71-3	RB	1
SUBSYS = 1 TOTAL = 2:44:03.363	2 MODE C TOTAL = 1 RT	1
47.12	924	81	7	1200-3	71-3	RB	1
1 MODE C TOTAL = 1
47.12	925	81	7 RT	1
SUBSYS = 1 TOTAL = 2:44:15.449	46.75	909	78	7	1200-3	71-3	RB	1
2 MODE C TOTAL = 1
46.87	901	79	7	1200-3	70-3	RB	1
1 MODE C TOTAL = 1
SUBSYS = 1 TOTAL = 2:44:51.393	47.25	891	78	7	1200-3	71-3	RB	1
1 MODE C TOTAL = 1
47.75	885	77	7	1200-3	72-3	RB	1
1 MODE C TOTAL = 1
SUBSYS = 1 TOTAL = 2:45:03.486	48.37	882	77	7	1200-3	74-3	RB	1
1 MODE C TOTAL = 1
48.87	886	77	7 RT	1
49.00	880	77	7	1200-3	76-3	RB	1
SUBSYS = 1 TOTAL = 2:45:24.955	144.37	46	4	7 RT	1
3 MODE C TOTAL = 1
49.87	881	77	7	1200-3	77-3	RB	1
1 MODE C TOTAL = 1
SUBSYS = 1 TOTAL = 2:45:51.502	50.50	757	66	0	1200-1 BT	1
50.37	884	77	7 RT	1
50.50	887	77	7	1200-3	81-3	RB	1
3 MODE C TOTAL = 1
SUBSYS = 1 TOTAL = 2:45:51.502	51.00	887	77	7	1200-3	84-3	RB	1
1 MODE C TOTAL = 1
51.37	766	67	0	1200-3 BT	1
51.37	766	67	0	1200-3 RB	1
SUBSYS = 1 TOTAL = 2:46:03.213	51.37	766	67	0	1200-3 BT	1
51.37	766	67	0	1200-3 RB	1
51.37	766	67	0	1200-3 RB	1
51.50	799	79	7	1200-3	85-3	RB	1
SUBSYS = 1 TOTAL = 2:46:15.621	3 MODE C TOTAL = 2
51.75	910	79	7	1200-3	85-3	RB	1
1 MODE C TOTAL = 1
52.12	920	80	7	1200-3	86-3	RB	1
SUBSYS = 1 TOTAL = 2:46:39.731	1 MODE C TOTAL = 1
52.50	926	81	7	1200-3	86-3	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.