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Radar computer printout, continuous data recording

FAA via National Archives / The Black Vault · 179 pages · text by 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.

-6.70	-144.25
2:48:50.459	1550	42	2134	197	52.96	-7.67	-50.52	197	51.73	-197	-524	201	543 1	PAP
-7.57	-50.62
SUBSYS = 1 TOTAL = 5 MODE G TOTAL = 3
2:49:01.249	TOTEM71-0144	4321	47	211	1914	159	109.67	38.15	-101.59	159	138.93	101	-319	162	334	UAR N	1	NEM
39.74	-101.57
2:49:01.250	UA59	-0277	2332	47	290	1953	163	97.62	27.75	-95.14	163	99.15	-172	420	337	455	DEP N	1	NEM
27.89	-95.10
2:49:02.129 0000	24	1973	123	144.12	15.87	-143.23	123	144.63	112	26	76	115 RO.1	NEM
15.97	-143.23
2:49:02.130	JL1529	-0101	1550	47	310	1325	163	63.95	11.49	-61.17	163	52.34	90	-129	169	493	UAR N	1	NEM
11.53	-61.21
2:49:02.493 0000	25	2090	192	144.32	-5.19	-143.99	192	141.15	-153	-17	263	155 RO.1	NEM
-3.57	-144.12
2:49:02.494 1550	34	2139	197	54.52	-9.32	-62.31	197	63.09	-197	-521	201	543 1	PAR
-9.32	-52.31
2:49:02.496	0135-1507	1550	12	2130	197	64.29	-7.06	-61.95 1	DEV
-9.14	-53.76
SUBSYS = 1 TOTAL = 7 MODE G TOTAL = 3
2:49:13.972	TOTEM71-0144	4371	47	1917	159	110.89	37.92	-102.99	159	110.07	62	-332	169	339	UAR N	1	NEM
39.14	-102.92
2:49:13.974	UA59	-0077	2332	47	290	1953	163	96.09	27.45	-93.55	163	97.65	-150	424	339	455	DEP N	1	NEM
22.39	-93.62
2:49:14.193	JL1629	-0101	1550	47	310	1927	169	65.62	11.79	-52.39	169	64.29	97	-490	169	493	UAR N	1	NEM
11.91	-52.95
2:49:11.574 0000	24	2792	192	144.45	-7.20	-144.15	192	144.52	-153	-17	263	155 RO.1	NEM
-7.22	-144.13
SUBSYS = 1 TOTAL = 4 MODE G TOTAL = 2
2:49:25.552	TOTEM71-0144	4371	47	211	1919	159	111.93	39.46	-103.96	159	111.18	79	-332	163	340	UAR N	1	NEM
39.40	-103.93
2:49:25.554	UA59	-0077	2332	47	290	1954	163	94.59	25.90	-92.25	163	93.15	-155	425	339	454	DEP N	1	NEM
25.97	-92.25
2:49:25.033	JL1629	-0101	1550	47	310	1929	169	52.29	12.00	-54.50	169	55.72	79	-491	170	439	UAR N	1	NEM
12.35	-54.50
2:49:23.412 0000	20	2295	193	144.55	-7.75	-144.25	193	144.65	-163	-12	253	155 RO.1	NEM
-7.75	-144.25
2:49:23.414	0052-1512	0000	12	2292	193	144.29	-9.93	-143.75
-9.93	-143.95
SUBSYS = 1 TOTAL = 5 MODE G TOTAL = 3
2:49:37.593	TOTEM71-0144	4371	47	211	1919	159	113.06	39.91	-104.94	159	112.19	95	-327	165	337	UAR N	1	NEM
39.23	-105.01
2:49:37.595	UA59	-0077	2332	47	290	1955	163	93.09	25.20	-92.90	163	94.52	-159	420	339	454	DEP N	1	NEM
25.29	-92.95
2:49:39.059	JL1629	-0101	1550	47	310	1929	169	69.92	12.29	-66.09	169	57.35	78	-497	172	499	UAR N	1	NEM
12.31	-55.12
2:49:39.155 0000	14	2797	193	144.54	-9.29	-144.31	193	144.79	-153	-17	263	155 RO.1	NEM
-9.29	-144.31
2:49:39.456	0052-1504	0000	12	2079	192	144.34	-5.51	-144.21
-6.99	-144.17
SUBSYS = 1 TOTAL = 5 MODE G TOTAL = 3
2:49:49.234	TOTEM71-0144	4371	47	211	1919	159	114.15	39.03	-106.23	153	113.72	97	-324	164	336	UAR N	1	NEM
39.93	-106.09
2:49:49.796	UA59	-0072	2332	47	290	1966	164	91.58	25.79	-99.46	163	93.13	-163	422	333	454	DEP N	1	NEM

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Document, cited by the archive. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 179 pages are in the text index: search them above, or from the library's search.