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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/SI	ABC/SY	RBC	FRM	RALT	PACP	PDEG	11/18/85	RY	DDEG	DRAN	XV	YV	EDC	SPD	ADS.C	PAGE	SYSCLS
PRAN	RI
2:26:55.695 1200 35 998	78	52.79	51.35	9.91	90	52.24	138	392	19	409 1	PAR
2:26:55.397	51.35	8.81 901	79	52.42	51.03	9.53 92	340	14	352 1	DEV
2:26:55.700	51.50	9.91 926	81	34.72	34.34	5.20	81	34.84	-2	-6	203	7 1	PAR
2:25:55.202	34.34	5.20 925	81	34.45	33.95	5.25 -30	-4	261	31 1	DEV
2:27:05.490	34.01	5.20
2:27:05.205	TOTAL =	6	MODE C	TOTAL =	3
2:27:05.205	15.95	59.95
2:27:05.205	JL1629 -0057	1550	1550	47	350	374	32	71.04	39.59	31.37	32	72.92	-16	-503	191	503	UAR N	1	NEM
2:27:09.792	39.67	61.31
2:27:09.792	50.21	9.50
2:27:09.794	51.91	10.09
2:27:09.799	33.95	5.20
SUBSYS = 1	TOTAL =	5	MODE C	TOTAL =	3
2:27:13.339	1200	1200	47	75	147	12	71.89	15.03	69.44	12	71.10	40	122	12	181
2:27:13.703	16.07	69.45
2:27:20.223	33.55	59.67
2:27:20.590	52.28	1200
2:27:20.593	49.29	10.26
SUBSYS = 1	33.53	5.20
2:27:30.357	1200	1200	47	75	145	12	72.50	16.05	70.04	12	71.75	29	179	9	182
2:27:30.904	16.14	70.04
2:27:30.904	JL1629 -0057	1550	1550	47 391	34	68.21	39.59	57.95	33	70.02	-16	-500	191	500	UAR N	1	NEM
2:27:32.233	33.53	57.99
2:27:32.233	48.54	11.17
2:27:32.525	42.60	13.17
2:27:32.525	33.29	5.19
2:27:32.526	0115-1605	0260	0260	11 911	90	34.17	.00	.20
2:27:32.629	33.65	5.99
2:27:32.629	0115-1607	0260	0250	11 937	92	34.02	.00	.00
2:27:32.935	33.71	4.53
2:27:32.935	37.06	-.62
SUBSYS = 1	TOTAL =	7	MODE C	TOTAL =	2
2:27:42.153	1200	1200	47	75	145	12	73.03	15.09	72.37	12	72.37	19	190	5	182
2:27:43.216	15.17	70.55
2:27:44.310	38.45	56.32
2:27:44.310	1200
2:27:44.310	47.76	12.04
2:27:44.310	0055-1615	1200	13	64	353	74	50.95	43.92	11.93

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.