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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.

TRACKING DATA TIME	ACID/SX	ADC/SY	HRC	ERM	BALT	PAGP	PDEG	11/19/95	IASR	6 SYS	GLS
PRAN	RX	RY	DDEG	DRAN	XV	YN	NDG	SPD	ADS
	25.75	-99.45
2:49:50.156	JL1629	-0121	1550	1550	47	310	1929	159	70.57	12.70	-67.57	169	69.96	98	-197	169	496	UAR N	1	NRM
	12.54	-67.25
SUBSYS = 1	TOTAL =	3	MODE G	TOTAL =	3
2:50:01.936	TOTEM71	-0141	4371	4371	47	211	1919	159	115.27	39.25	-102.14	159	114.44	93	-324	165	231	UAR N	1	NRM
	39.29	-107.17
2:50:01.999	UA69	-0077	2332	2332	47	290	1967	154	90.09	25.23	-88.05	164	91.61	-151	122	330	453	DEP N	1	NPM
	25.21	-99.04
2:50:02.254	JL1629	-0121	1550	1550	47	312	1927	159	72.20	13.02	-52.23	169	72.51	94	-493	160	493	UAR N	1	NPM
	12.96	-69.34
SUBSYS = 1	TOTAL =	3	MODE G	TOTAL =	3
2:50:13.974	TOTEM71	-0144	4371	4371	47	211	1921	159	115.35	39.31	-109.32	169	115.59	53	-330	169	336	UAR N	1	NRM
	39.45	-109.29
2:50:13.906	UA69	-0077	2332	2332	47	290	1969	164	89.59	24.69	-96.55	164	90.10	-160	121	339	452	DEP N	1	NRM
	24.69	-96.64
2:50:14.255	JL1529	-0121	1550	1550	47	310	1929	159	73.95	13.21	-71.31	150	72.36	99	-195	169	494	UAR N	1	NRM
	13.25	-70.99
2:50:14.543 0000 24 2165	190	159.75	-29.99	-157.07	190	159.03	52	-22	113	57 RO 1	NRM
	-29.99	-157.07
SUBSYS = 1	TOTAL =	4	MODE G	TOTAL =	3
2:50:25.777	TOTEM71	-0144	4371	4371	47	211	1922	159	117.47	39.70	-129.37	162	115.62	56	-329	169	336	UAR N	1	NRM
	39.57	-109.39
2:50:25.779	UA59	-0077	2332	2332	47	290	1969	164	97.10	24.15	-95.25	164	99.50	-160	422	339	451	DEP N	1	NRM
	24.14	-95.23
2:50:25.300	JL1629	-0141	1550	1550	47	310	1927	169	75.50	13.62	-72.59	169	73.98	94	-424	169	494	UAR N	1	NRM
	13.59	-72.59
SUBSYS = 1	TOTAL =	3	MODE G	TOTAL =	3
2:50:37.965	TOTEM71	-0144	4371	4371	47	211	1922	159	119.56	40.04	-110.31	162	117.72	79	-323	166	331	UAR N	1	NRM
	39.98	-110.43
2:50:37.966	UA59	-0077	2332	2332	47	290	1971	154	95.61	23.35	-93.92	164	97.06	-190	413	336	452	DEP N	1	NRM
	23.49	-93.97
2:50:39.231	JL1629	-0121	1550	1550	47	310	1923	159	77.14	14.50	-74.27	169	75.57	141	-475	163	403	UAR N	1	NRM
	14.20	-74.15
2:50:39.632 0000 24 2053	190	147.94	-1.81	-147.97	190	147.53	297	-35	97	304 RO 1	NRM
	-1.91	-147.97
SUBSYS = 1	TOTAL =	4	MODE G	TOTAL =	3
2:50:49.896	TOTEM71	-0144	4371	4371	47	211	1922	160	119.65	40.42	-111.37	152	113.92	24	-315	163	331	UAR N	1	NRM
	40.34	-111.46
2:50:49.997	UA59	-0077	2332	2332	47	290	1975	164	94.14	22.57	-92.57	164	95.53	-203	424	333	450	DEP N	1	NRM
	22.73	-92.54
2:50:50.272	JL1629	-0141	1550	1550	47	310	1923	169	79.79	14.45	-75.73	169	77.21	125	-479	165	423	UAR N	1	NRM
	14.56	-75.75
2:50:50.333 0000 24 2050	191	144.15	-2.95	-144.29	191	143.99	45	-19	112	19 RO 1	NRM
	-2.95	-144.79
2:50:50.565 0000 23 2049	190	149.06	-1.32	-147.23	190	147.53	297	-35	97	304 RO 1	NRM
	-1.32	-147.93
2:50:50.557	JL1629	-0121	0000 12 2260	191	147.74	-3.84	-147.57 -56	14	294	57 RO 1	NRM
	-2.75	-147.70
SUBSYS = 1	TOTAL =	6	MODE G	TOTAL =	3
2:51:01.925	TOTEM71	-0144	4371	4371	47	211	1922	160	120.75	40.64	-112.50	160	119.95	93	-315	163	329	UAR N	1	NRM
	40.35	-112.53
2:51:01.929	UA59	-0077	2332	2332	47	290	1979	165	92.71	21.94	-91.35	165	94.12	-221	394	330	152	DEP N	1	NRM

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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.