Documents / Document

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.

TIME	ACID/SY	ABC/SY	RBC	FRM	RALT	PAGP	PDEG	PRAN	RY	PY	DDET	DRAN	XV	YV	EDG	SPD	ADS C	SYS CLS
2:42:45.785 0162	0162	47 1112	97	19.62	19.46	-2.35	95	19.69	-16	-128	199	112 1 NPM
2:42:47.157	19.54	-2.29 -2.35	102	22.91	5	2	65	6 1 NPM
2:42:47.245 1271	1271	47	710	1235	109	22.99	21.54	-2.35	102	22.91	5	2	65	6 1 NPM
2:42:47.245	21.55	-7.35 -2.35	102	22.91	5	2	65	6 1 NPM
2:42:43.293 1547	1547	47	93	1393	122	26.70	22.37	-15.29	123	27.14	34	122	9	196 1 NPM
2:42:43.293 22.42	-14.95 -9.49	143	12.62	345	-205	120	403 1 PAR
 1550 14 1593	140	11.92	6.29	-9.49	143	12.62	345	-205	120	403 1 PAR
SUBSYS = 1	TOTAL =	9	MODE	G	TOTAL =	5
2:42:52.919 1200	1200	47	74	2479	217	34.00	-21.37	-27.21	219	34.93	143	92	59	165 1 NPM
	-21.32	-27.12
2:42:55.764	JL1623 -2757	1550 11 3376	340	13.10	-4.42	10.70	337	11.50	30	499	3	501	UAR N	1 PAR
	-4.42	-10.70
2:42:55.059	0057-1517	1550	1550	10	310	3499	307	15.14	.00	.20 -480	173	269	512 1 LT
	-12.30	9.23
2:42:53.513 0250 47 946	93	20.11	19.99	2.26	93	20.19	4	6	39	7 1 NPM
	19.95	2.35
2:42:53.876 0162	0162	47 1124	98	19.53	19.29	-2.70	97	19.55	-30	-109	195	113 1 NPM
	19.40	-2.55
2:42:59.250 1271	1271	47	710	1237	109	22.90	21.64	-7.10	109	22.92	5	-2	94	5 1 NPM
	21.57	-7.35
2:42:59.774 1547	1547	47	77	1376	120	25.45	22.62	-14.03	121	25.72	39	220	19	204 1 NPM
	22.55	-14.26
SUBSYS = 1	TOTAL =	7	MODE	G	TOTAL =	4
2:43:93.017 1200	1200	42	74	2468	216	33.60	-20.60	-27.19	212	34.32	159	55	70	169 1 NPM
	-20.75	-27.03
2:43:12.515 0250 47 943	93	20.17	19.98	2.23	93	20.12	9	-0	92	9 1 NPM
	20.00	2.32
2:43:12.894 0162	0162	47 1139	100	19.45	19.23	-3.12	99	19.54	-33	-111	196	116 1 NPM
	19.29	-3.03
2:43:11.395 1271	1221	47 1232	109	22.82	21.53	-7.32	109	22.90	1	1	31	2 1 NPM
	21.55	-7.34
2:43:11.649 1547	1547	47	74	1359	119	26.21	22.75	-13.31	122	26.41	41	220	11	212 1 NPM
	22.70	-13.53
SUBSYS = 1	TOTAL =	5	MODE	G	TOTAL =	2
2:43:15.119 1200	1200	47	74	2454	216	33.10	-20.35	-25.75	217	33.92	154	61	67	167 1 NPM
	-20.25	-26.79
2:43:22.527 0260	0260	47 947	93	20.19	19.96	2.35	83	20.17	7	1	77	7 1 NPM
	20.31	2.34
2:43:22.937 0162	0162	47 1152	101	19.35	19.24	-3.51	107	19.42	-10	-112	199	120 1 NPM
	19.10	-3.42
2:43:23.374 1271	1271	47	710	1236	109	22.79	21.53	-7.29	109	22.79	-7	6	312	10 1 NPM
	21.59	-7.31
2:43:23.749 1547	1547	47	71	1339	117	25.95	22.97	-12.59	119	26.49	41	215	10	219 1 NPM
	22.84	-12.78
SUBSYS = 1	TOTAL =	5	MODE	G	TOTAL =	3
2:43:25.232 1550	1550	07	310	1954	153	15.11	4.49	-15.43	153	15.12	0	0	45	0 1 NPM
	4.49	-15.49
2:43:27.130 1200	1200	47	74	2451	216	32.54	-19.81	-26.37	216	33.18	147	72	61	157 1 NPM
	-19.79	-26.49
2:43:34.397 0250 45 947	93	20.21	20.04	2.35	93	20.25	7	1	77	7 1 NPM
	20.04	2.35
2:43:34.399	0160-1615	0260	0260	11 950	93	20.14	.20	.20

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.