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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.

TIME	ACID/SY	ABC/SY	RBC	FRM	BALT	PACP	PDEG	PRAN	RX	RY	DDEG	DRAN	XV	YV	NDG	SPD	ADS C	PAGE	SYS	CLS
	16.62	73.60
2:28:43.252 0000	05 437	39	62.62	38.98	19.01	39	62.96	0	0	45	0 1	NRM
	39.98	49.01
2:28:43.254	JL1629 -0057	1550	1550	47	350	446	39	60.07	39.12	49.09	39	61.69	-10	-492	191	492	UAR N 1	NRM
	39.04	48.17
2:28:44.382 0000	33 957	75	46.85	46.29	12.15	75	47.77	-290	-96	253	302 RO 1	PAP
	45.29	12.15
2:28:44.384	0020-1505	0000	11 329	72	47.64	.00	.20 -240	194	327	304 RO 1	PT
	45.53	14.03
2:28:44.387	0020-1607	0000	11 884	77	47.77	.00	.20 -100	-296	199	304 RO 1	LT
	45.57	10.17
2:28:44.759 0260	0260	22 942	92	31.11	31.23	3.98	82	31.60	-107	-54	243	119 1	NRM
	31.23	3.98
2:28:44.771 1200	31 921	80	52.78	51.45	8.78	80	52.33	199	-142	125	245 1	PAP
	51.45	8.79
2:28:44.772	0055-1625	1200	12	78	905	79	52.67	51.14	10.20 152	42	75	157 1	DEV
	51.81	9.53
2:28:44.774 0162	0162	47 1009	98	35.73	35.85	.59	89	35.79	-54	66	320	96 1	NPM
	35.90	.55
SUBSYS = 1	TOTAL =	10	MODE	C	TOTAL =	3
2:28:54.585 1200	45 143	12	76.65	16.71	74.20	12	75.95	25	176	8	179 1	PAR
	16.71	74.20
2:28:54.587	0071-1604	1200	11	75	159	13	75.19	.00	.20 159	-30	116	178 1	RT
	19.25	72.93
2:28:54.599	0074-1613	1200	11	75	129	11	74.93	.00	.20 -175	-30	260	178 1	LT
	14.87	73.43
2:29:55.334 0000	05 437	38	62.62	38.98	49.71	38	62.96	0	0	45	0 1	NPM
	39.98	49.01
2:29:55.336	JL1629-0057	1550	42	350	459	40	59.79	38.06	46.32	39	60.26	-6	-495	192	495	UAR N 1	NRM
	38.03	46.48
	45.32	11.97
2:29:55.452	0020-1606	0000	10 315	71	47.35	.00	.20 -122	251	325	306 RO 1	RT
	44.95	14.87
2:29:55.454	0020-1507	0000	10 398	79	47.54	.00	.20 -5	-304	181	303 RO 1	LT
	46.55	9.15
2:28:55.955 0260	21 345	93	30.73	32.97	3.37	92	31.23	-107	-54	243	119 1	NRM
	30.87	3.97
2:28:55.856 1200	27	105	892	78	52.70	50.87	10.69	78	51.99	105	103	45	142 1	PAR
	51.26	10.21
2:28:55.958 0162	0152	47 1005	99	35.43	35.60	.75	83	35.56	-61	52	315	87 1	NRM
	35.67	.75
SUBSYS = 1	TOTAL =	11	MODE	C	TOTAL =
2:29:05.579 1200	42 143	12	77.25	16.91	74.79	12	76.55	26	176	8	179 1	PAR
	16.91	74.78
2:29:05.631	0074-1604	1200	10	75	163	14	74.74	.00	.00 91	-158	152	177 1	RT
	19.53	72.40
2:29:05.634	0074-1613	1200	10	75	127	11	74.43	.00	.00 -123	-129	223	177 1	LT
	14.46	73.01
2:29:07.429 7000	04 437	39	62.62	39.98	49.01	39	62.96	0	0	45	0 1	NRM
	39.98	49.01
2:29:07.431	JL1629-0057	1550	47	350	468	41	57.40	37.81	41.79	42	59.92	-22	-497	192	499	JAR N 1	NRM
	37.92	44.82

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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.