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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.

RADAR REINFORCED TARGET STIME	REPORTS	11/19/86	PAGE
RANGE	ACP	DEG	Q	BEACON	ALT	QUA	SYS
2:11:33.700	194.75	153	13	?	1550-3	350-3	RB	1
2:11:15.735	193.12	153	13	?	1550=3 RB	1
2:11:57.761	191.50	154	13	?	1550-3	350-3	RB	1
2:12:09.785	139.87	155	13	?	1550=3	351=3	RB	1
2:12:21.827	199.25	157	13	?	1550-3 RB	1
2:13:09.793	131.62	150	14	?	1550=3	351=3	RB	1
2:13:21.829	190.00	161	14	?	1550-3	351-3	RB	1
2:13:33.723	179.37	163	14	?	1550=3	351=3	RB	1
2:13:45.810	173.75	155	14	?	1550-3	350-3	RB	1
2:13:52.935	175.12	154	14	?	1550=3	352=3	RB	1
2:14:09.926	173.50	167	14	?	1550-3	350-3	RB	1
2:11:45.872	169.62	170	14	?	1550-3	350=3	RB	1
2:11:57.954	157.30	172	15	?	1550-3	349-3	RB	1
2:15:13.041	165.37	173	15	?	1550=3	349=3	RB	1
2:15:22.069	153.75	175	15	?	1550-3	349-3	RB	1
2:15:34.152	152.12	178	15	?	1550=1 RB	1
2:15:12.170	157.25	130	15	?	1550-3	349-3	RB	1
2:15:22.195	155.75	192	15	?	1550=3	349=3	RB	1
2:15:34.300	154.12	194	16	?	1550-3	349-3	RP	1
2:15:59.341	152.87	197	16	?	1550=3	349=3	RB	1
2:17:10.371	149.25	199	16	?	1550-3	349-3	RB	1
2:12:22.392	147.62	199	16	?	1550=3	340=3	RB	1
2:17:54.420	146.00	192	16	?	1550-3	349-3	RB	1
2:17:45.441	144.37	194	17	?	1550-3	349-3	RB	1
2:19:10.303	141.12	195	17	?	1550-3	350-3	RB	1
2:19:22.322	139.52	199	17	?	1550=3	350=3	RD	1
2:19:34.415	137.97	201	17	?	1550-3	350-3	RB	1
2:19:43.493	135.25	203	17	?	1550-3	350=3	RB	1
2:19:10.500	133.12	209	19	?	1550-3	350-3	RB	1
2:19:22.804	131.50	214	18	?	1550=3	350=3	RB	1
2:19:34.636	129.97	213	19	?	1550-3	350-3	RB	1
2:19:43.535	129.25	214	18	?	1550-3	350-3	RB	1
2:19:53.623	125.62	216	19	?	1550-3	350-3	RB	1
2:20:10.543	125.00	218	19	?	1550-3	350-3	RB	1
2:20:22.662	123.50	222	19	?	1550-3	350-3	RE	1
2:23:31.959	121.97	224	19	?	1550-3	350=3	RB	1
2:22:59.962	119.62	229	20	?	1550-3	350-3	RB	1
2:21:11.041	117.00	232	20	?	1550=3	350=3	RE	1
2:21:34.775	113.97	239	20	?	1550-3	350-3	RB	1
2:21:45.922	112.37	240	21	?	1550-3	350=3	RB	1
2:22:11.091	109.12	247	21	?	1550-3	350-3	RB	1
2:22:23.170	107.50	249	21	?	1550-3	350=3	RB	1
2:22:34.890	106.00	252	22	?	1550-3	350-3	RB	1
2:22:47.217	104.37	257	22	?	1550=3 RB	1
2:22:59.177	102.87	259	22	?	1550-3	350-3	RB	1
2:23:11.200	101.25	263	23	?	1550-3	350=3	RB	1
2:23:35.320	99.12	270	23	?	1550-3	350-3	RB	1
2:23:17.414	95.52	271	24	?	1550=3	350=3	RB	1
2:24:11.452	93.50	292	24	?	1550-3	350-3	RB	1
2:24:23.422	92.00	289	25	?	1550=3	350=3	RB	1
2:24:35.447	92.37	293	25	?	1550-3	350-3	RB	1
2:24:47.455	93.87	299	26	?	1550-3	350-3	RB	1
2:24:59.497	97.37	304	26	?	1550-3	350-3	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.