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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 TARGET REPORTS STIME	11/18/86	BEACON	ALT	PAGE	3 SYS
RANGE	AGP	DEG	Q
2:17:58.464	142.62	196	17	7 RT	1
142.75	196	17	0	1550-3	350-3	BT	1
43.62	208	18	0	1200-3	74-3	BT	1
36.00	1022	89	0	0313-3	8-3	BT	1
SUBSYS = 1 TOTAL = 2:18:10.308	4 MODE C TOTAL = 3
141.12	196	17	7	1550-3	350-3	RB	1
44.12	206	18	0	1200-3	74-3	BT	1
35.62	1005	88	0	0313-1 BT	1
SUBSYS = 1 TOTAL = 2:18:10.685	35.75	1017	89	0	0313-3	11-3	BT	1
4 MODE C TOTAL = 3
139.62	199	17	7	1550-3	350-3	RB	1
44.75	205	18	0	1200-3	74-3	BT	1
SUBSYS = 1 TOTAL = 2:18:24.958	35.37	1006	88	0	0313-3	13-3	BT	1
3 MODE C TOTAL = 3
137.87	201	17	7	1550-3	350-3	RB	1
45.37	202	17	0	1200-3	74-3	BT	1
SUBSYS = 1 TOTAL = 2:18:46.499	2 MODE C TOTAL = 2
136.25	203	17	7	1550-3	350-3	RB	1
45.87	199	17	0	1200-3	74-3	BT	1
103.25	807	70	7 RT	1
SUBSYS = 1 TOTAL = 2:19:10.600	4 MODE C TOTAL = 2
47.12	194	17	0	1200-3	75-3	BT	1
133.12	208	18	7	1550-3	350-3	RB	1
103.12	208	18	7	1550-3	350-3	RB	1
SUBSYS = 1 TOTAL = 2:19:22.428	2 MODE C TOTAL = 2
47.75	192	16	0	1200-3	75-3	BT	1
131.50	210	18	7	1550-3	350-3	RB	1
103.37	806	70	7 RT	1
SUBSYS = 1 TOTAL = 2:19:24.307	144.50	48	4	7 RT	1
4 MODE C TOTAL = 2
48.37	190	16	0	1200-3	75-3	BT	1
129.87	213	18	7	1550-3	350-3	RB	1
SUBSYS = 1 TOTAL = 2:19:46.525	2 MODE C TOTAL = 2
48.87	179	15	0	1200-3	74-3	BT	1
49.00	196	17	0	1200-3 BT	1
128.25	214	18	7	1550-3	350-3	RB	1
SUBSYS = 1 TOTAL = 2:19:58.249	144.62	45	3	7 RT	1
4 MODE C TOTAL = 2
49.50	185	16	0	1200-3	74-3	BT	1
126.62	216	18	7	1550-3	350-3	RB	1
SUBSYS = 1 TOTAL = 2:20:10.640	2 MODE C TOTAL = 2
50.25	189	16	7	0000-0 RB	1
50.12	184	16	0	1200-3 BT	1
125.00	218	19	7	1550-3	350-3	RB	1
SUBSYS = 1 TOTAL = 2:20:22.662	3 MODE C TOTAL = 1
50.75	181	15	0	1200-3	74-3	BT	1
123.37	225	19	7 RT	1
123.50	222	19	7	1550-3	350-3	RB	1
SUBSYS = 1 TOTAL = 2:20:34.493	3 MODE C TOTAL = 2
51.37	180	15	0	1200-3 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.