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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.

SUBSYS = 1	TOTAL = 3	MODE C	TOTAL = 2
3:01:27.351	TOTEM71-0144	4371	4371	47	221	1939	170	154.00	25.40	-150.59	172	153.13	66	-329	169	335	UAR E	1 NPM
	25.37	-150.75
3:01:27.353	JL1529	-0101	1550	1550	47	218	1939	170	162.93	27.09	-159.06	172	161.78	90	-412	169	426	UAR E	1 NPM
	25.32	-159.26
3:01:27.732 0000 33 2255	190	144.42	-1.87	-144.32	192	144.00	35	-24	121	43 PQ 1	PAP
	-1.97	-144.32
3:01:27.734	0021-1513	0000 12 2259	190	144.09	-2.42	-143.99 -45	26	209	52 PQ 1	DEV
	-2.29	-144.26
SUBSYS = 1	TOTAL = 4	MODE C	TOTAL = 2
3:01:39.391	TOTEM71-0144	4371	4371	47	219	1939	170	155.07	25.59	-151.70	170	154.26	69	-324	169	331	UAR E	1 NPM
	25.60	-151.92
3:01:39.393	JL1629	-0101	1550	1550	47	213	1939	170	154.29	27.32	-152.42	170	153.15	121	-179	165	419	UAR E	1 NPM
	27.21	-160.59
SUBSYS = 1	TOTAL = 2	MODE C	TOTAL = 2
3:01:51.397	TOTEM71-0144	4371	4371	47 1939	170	155.15	25.54	-152.35	170	155.41	47	-325	171	330	UAR E	1 NPM
	25.70	-152.90
3:01:51.399	JL1629	-0101	1550	1550	47	208	1939	170	165.64	27.29	-161.31	170	154.51	93	-426	168	415	UAR E	1 NPM
	27.43	-161.95
SUBSYS = 1	TOTAL = 2	MODE C	TOTAL = 1
3:02:03.229	TOTEM71-0144	4371	4371	47 1942	170	157.23	25.03	-154.27	170	155.55	-18	-334	193	335	UAR E	1 NPM
	25.43	-154.04
3:02:03.230	JL1629	-0101	1550	1550	47 1939	170	167.01	27.79	-163.25	170	156.03	90	-494	167	413	UAR E	1 NPM
	27.76	-163.23
SUBSYS = 1	TOTAL = 2
3:02:15.313	TOTEM71-0144	4371	4371	47	209	1947	171	159.23	24.03	-155.50	171	157.95	-124	-310	202	363	UAR E	1 NPM
	24.71	-155.21
3:02:15.315	JL1629	-0101	1550 45 1937	170	159.39	29.05	-154.54	172	157.45	90	-424	157	413	UAR E	1 PAP
	29.06	-154.54
3:02:15.317	0101-1612	1550	1550	11 1949	171	167.45	.00	.00 -273	-310	221	414 1 PET
	25.45	-165.50
3:02:15.320	0101-1514	1550	1550	11 1927	159	157.17	.00	.00 390	-153	113	414 1 LT
	32.91	-154.29
SUBSYS = 1	TOTAL = 4	MODE C	TOTAL = 1
3:02:27.345	TOTEM71-0144	4371	4371	47	225	1946	171	159.64	25.65	-156.39	170	159.94	-25	-363	183	365	UAR E	1 NPM
	24.93	-156.49
3:02:27.349	JL1529	-0101	1550 42 1937	170	159.73	29.37	-155.99	172	169.93	90	-404	167	413	UAR E	1 PAP
	29.37	-165.98
3:02:27.350	0101-1612	1550	1550	10 1953	171	167.97	.00	.00 -355	-219	239	414 1 PT
	21.25	-155.20
3:02:27.353	0101-1614	1550	1550	10 1922	159	167.55	.00	.70 412	-37	95	415 1 IT
	32.18	-164.42
SUBSYS = 1	TOTAL = 4	MODE C	TOTAL = 1
3:02:39.429	TOTEM71-0144	4371 47 1943	170	159.95	25.07	-157.45	172	150.05	70	-351	169	369	UAR E	1 NPM
	25.45	-157.67
3:02:39.411	JL1628	-0101	1550 34 1937	170	171.16	28.67	-167.32	170	170.21	90	-424	167	413	UAR E	1 PAP
	29.67	-167.32
3:02:39.414	0101-1612	1550	1550	10 1959	172	159.29	.00	.22 -404	-90	257	414 1 BT
	22.90	-156.51
3:02:39.415	0101-1614	1550	1550	10 1916	163	167.51	.00	.00 404	92	77	414 1 LT
	33.54	-164.10

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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.