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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.

-17.17	-25.29
2:45:59.250	23.29	1547	1547	47	31	1105	97	23.50	23.32	-3.70	93	23.69	2	193	0	182	1	NPM
2:45:59.133	21.53	1271	1271	47	716	1235	108	22.74	21.64	-7.35	109	22.91	-6	-0	268	6	1	NPM
2:45:59.357	17.67	0152	0152	47 1325	116	19.60	17.62	-9.32	115	19.47	-36	-110	198	115	1	NPM
SUBSYS=1	TOTAL=	7MODE	C	TOTAL=	4
2:45:22.138 1200	1200	47 2235	195	33.03	-9.42	-32.14	195	33.53	49	119	22	129	1	NPM
2:46:02.968	-9.59	-32.06
2:46:11.142	-13.21	0156	0156	07	74	2395	209	26.75	-13.21	-23.25	209	25.75	0	0	45	0	1	NPM
2:46:11.516	23.29	1547	1547	47	28	1799	95	23.42	23.29	-3.31	97	23.57	1	191	0	191	1	NPM
2:46:11.935	21.53	-2.96	1271	1271	47	710	1239	109	22.75	21.64	-7.35	109	22.91	-3	-1	250	3	1	NPM
2:45:11.935 -7.35	0152	0152	47 1339	117	19.57	17.57	-9.72	116	19.56	-34	-112	197	115	1	NPM
SUBSYS=1	17.55	-9.75
2:46:14.519	TOTAL=	5MODE	C	TOTAL=	3
2:46:14.521	-9.42	1200 46 2235	196	32.61	-9.42	-31.65	195	33.05	48	118	22	128	1	FAR
2:46:14.523	0073-1515	1200	1200	11 2214	194	33.99	.20	.22 97	-92	130	129	1	RT
2:46:14.523	-9.56	-32.79 -127	7	273	129	1	IT
2:46:14.933	0073-1517	1200	1200	11 2261	199	33.57	.02	.02 -127	7	273	129	1	NPM
2:46:23.160	-12.50	0155	0166	20	74	2365	227	25.75	-12.60	-23.21	209	25.27	177	77	59	101	1	NPM
2:46:23.530	23.31	-2.35
2:46:23.932	21.54	-7.37
2:46:23.932	17.42	-9.49
SUBSYS=1	TOTAL=	7MODE	C	TOTAL=	3
2:46:25.531 -9.26	1200 42 2234	196	32.18	-9.26	-31.26	195	32.53	19	119	22	129	1	TAR
2:46:25.533	0073-1512	1200 12 2223	195	32.28	-9.57	-31.59 99	95	45	137	1	DTV
2:46:27.002	-9.59	-31.10
2:46:27.002	-12.25	-22.64
2:46:35.247	23.45	1542	1547	47	24	1255	92	23.56	23.54	-1.79	94	23.57	21	132	6	192	1	NPM
2:46:35.526	21.54	-1.76
2:46:35.526	21.54	-7.37
2:46:35.526 0152	0162	47 1332	119	19.79	17.31	-9.48	119	19.71	-36	-129	199	114	1	NPM
SUBSYS=1	17.31	-9.45
2:46:39.549	TOTAL=	5MODE	C	TOTAL=	3
2:46:39.549	-9.29	131.25
2:46:39.994	0166	0166	48	71	2359	207	24.75	-11.71	-22.35	207	25.14	134	95	54	165	1	NPM
2:46:47.367	-11.78	-22.32
2:46:47.367	23.55	-1.17

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.