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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	9 SYS
RANGE	AGP	DEG	Q	BEACON	ALT
2:31:37.736	48.37	899	79	7 RT	1
2:31:38.114	51.87	893	78	7	1200-3	65-3 RB	1
SUBSYS = 1 TOTAL =	3 MODE C TOTAL = 2
40.25	623	54	7	1550-3	350-3 RB	1
48.87	889	78	7 RT	1
52.12	896	78	7	1200-3	81-3 RB	1
SUBSYS = 1 TOTAL =	3 MODE C TOTAL = 2
38.75	629	55	7	1550-3	349-3 RB	1
103.37	806	70	7 RT	1
50.00	892	78	7 RT	1
SUBSYS = 1 TOTAL =	52.00	905	79	7	1200-3	91-3 RB	1
4 MODE C TOTAL = 2
37.25	632	55	7 RT	1
37.12	636	55	0	1550-3	349-3 BT	1
SUBSYS = 1 TOTAL =	50.62	865	77	7 RT	1
51.37	905	79	7	1200-3	89-3 RB	1
4 MODE C TOTAL = 2
35.75	644	56	7 RT	1
SUBSYS = 1 TOTAL =	35.62	644	56	0	1550-3	349-3 BT	1
50.62	878	77	7 RT	1
50.87	900	79	0	1200-3	56-3 BT	1
4 MODE C TOTAL = 2
SUBSYS = 1 TOTAL =	49.87	662	75	7 RT	1
50.00	892	78	7	1200-3	38-3 RB	1
2 MODE C TOTAL = 1
49.25	897	78	7	1200-3	69-3 RB	1
SUBSYS = 1 TOTAL =	1 MODE C TOTAL = 1
49.75	906	79	7	1200-3	99-3 RB	1
37.12	1033	90	0	4441-3	6-3 BT	1
2 MODE C TOTAL = 2
SUBSYS = 1 TOTAL =	103.37	806	70	7 RT	1
51.25	904	79	7 RT	1
50.25	910	79	7	1200-3	101-3 RB	1
37.00	1033	90	0	4441-3 BT	1
SUBSYS = 1 TOTAL =	4 MODE C TOTAL = 1
51.62	891	78	7 RT	1
50.62	907	79	7	1200-3	103-3 RB	1
36.87	1025	90	0	4441-3 BT	1
SUBSYS = 1 TOTAL =	3 MODE C TOTAL = 1
51.75	877	77	7 RT	1
50.50	898	78	7	1200-3	56-3 RB	1
36.87	1032	90	0	4441-3 BT	1
SUBSYS = 1 TOTAL =	3 MODE C TOTAL = 1
51.50	873	76	7 RT	1
49.87	887	77	7	1200-3	43-3 RB	1
36.75	1032	90	0	4441-3	6-3 BT	1
SUBSYS = 1 TOTAL =	3 MODE C TOTAL = 2
103.25	806	70	7 RT	1
49.00	888	78	0	1200-3	71-3 BT	1
36.75	1032	90	0	4441-3	6-3 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.