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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	PAGE	11 SYS
RANGE	ACP	LEG	Q	BEAGON	ALT
SUBSYS = 1 TOTAL = 2:37:02.268
2:37:02.645
2:37:03.023	36.37	1025	90	0	1721-3	484-3 BT	1
36.75	1031	90	0	4441-1 BT	1
4 MODE C TOTAL = 2
103.25	805	70	7 RT	1
50.62	859	75	7	1200-3	98-3 RB	1
36.75	1028	90	0	4441-3	6-3 BT	1
SUBSYS = 1 TOTAL = 2:37:14.414	49.87	860	75	7	1200-3	82-3 RB	1
51.12	890	78	7 RT	1
36.75	1029	90	0	4441-3	292-3 BT	1
3 MODE C TOTAL = 2
SUBSYS = 1 TOTAL = 2:37:26.437	103.25	806	70	7 RT	1
51.37	873	76	7 RT	1
49.50	887	77	0	1200-3	64-3 BT	1
36.75	1028	90	0	4441-3 BT	1
4 MODE C TOTAL = 1
49.00	895	78	7	1200-3	55-3 RB	1
SUBSYS = 1 TOTAL = 2:37:38.839	36.75	1029	90	0	4441-3	292-3 BT	1
2 MODE C TOTAL = 2
48.25	768	67	0	1200-3 BT	1
48.12	906	79	7 RT	1
SUBSYS = 1 TOTAL = 2:37:51.050	48.25	901	79	0	1200-3	52-3 BT	1
36.75	1028	90	0	4441-3	292-3 BT	1
4 MODE C TOTAL = 2
48.37	879	77	7 RT	1
SUBSYS = 1 TOTAL = 2:38:02.753	47.62	918	80	7	1200-3	53-3 RB	1
36.75	1029	90	0	4441-3	6-3 BT	1
3 MODE C TOTAL = 2
47.87	927	81	7 RT	1
SUBSYS = 1 TOTAL = 2:38:15.146	48.00	934	82	0	1200-3	72-3 BT	1
36.75	1028	90	0	4441-3	292-3 BT	1
3 MODE C TOTAL = 2
46.62	897	78	7 RT	1
SUBSYS = 1 TOTAL = 2:38:26.485	48.62	923	81	0	1200-3	90-3 BT	1
48.75	940	82	0	1200-3 BT	1
36.75	1028	90	0	4441-3	6-3 BT	1
4 MODE C TOTAL = 2
SUBSYS = 1 TOTAL = 2:38:38.956	49.12	918	80	0	1200-3	95-3 BT	1
36.75	1029	90	0	4441-3 BT	1
2 MODE C TOTAL = 1
46.50	930	81	7 RT	1
SUBSYS = 1 TOTAL = 2:38:50.604	49.12	903	79	7	1200-3	90-3 RB	1
36.75	1029	90	0	4441-3 BT	1
3 MODE C TOTAL = 1
48.37	895	78	7	1200-3	103-3 RB	1
SUBSYS = 1 TOTAL = 2:39:03.193	36.75	1029	90	0	4441-3	292-3 BT	1
2 MODE C TOTAL = 2
48.37	895	78	7	1200-3	124-3 BT	1
47.75	896	78	0	1200-3	124-3 BT	1
SUBSYS = 1 TOTAL = 2:39:26.927	36.75	1029	90	0	4441-3	292-3 RB	1
2 MODE C TOTAL = 2
48.37	895	78	7	1200-3	123-3 RB	1
47.12	903	79	7	1200-3	123-3 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.