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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/SX	ABC/SY	REC	FRM	BALT	PACP	PDEG	PRAN	RX	RY	DDEG	DRAN	XV	YV	LEG	SPD	ADS	C	PAGE	7
	34.59	4.04
SUBSYS = 1	TOTAL =	3	MODE C	TOTAL =	1
2:22:53.979 1200	1200	47	75	159	14	59.50	14.95	55.44	14	52.92	19	172	5	190 1	NRM
2:22:53.991	14.90	55.95
2:22:53.354	JL1629 -0057	1550	1550	47 259	22	102.94	43.07	95.35	22	101.59	-19	-499	192	193	UAR N 1	NRM
2:22:53.354	39.96	96.45
 0250	0250	47 945	93	35.12	34.45	4.29	92	34.85	54	19	71	57 1	NRM
SUBSYS = 1	34.73	4.17
2:23:05.959	TOTAL =	3	MODE C	TOTAL =	1
2:23:05.393 1200	1200	47	75	165	14	59.13	14.93	56.67	14	59.50	14	192	4	193 1	NRM
	14.95	56.57
2:23:05.393	JL1629 -0057	1550	1550	47	350	262	23	101.25	39.65	94.90	22	103.07	-38	-495	194	499	UAR N 1	NRM
	39.78	94.81
2:23:03.221 0260 46 944	92	35.36	34.92	4.23	83	35.30	54	18	71	57 1	PAR
	34.92	4.23
2:23:03.223	0115-1615	0250 12 935	92	34.93	34.43	4.50 -17	74	347	75 1	DEV
	34.60	4.67
SUBSYS = 1	TOTAL =	4	MODE C	TOTAL =	2
2:23:13.029 1200	1200	47	75	155	14	59.75	15.20	52.29	14	59.11	14	195	4	196 1	NRM
	15.00	57.21
2:23:19.354	JL1629 -0057	1550	1550	42	350	266	23	99.68	39.23	93.10	23	101.41	-30	-496	193	409	UAR N 1	NRM
	39.69	93.14
2:23:22.235 0250	0260	27 933	92	34.95	34.55	4.53	82	34.99	-19	57	343	70 1	NRM
	34.59	4.59
2:23:20.534 1200	1200	37 1035	90	37.12	37.49	-1.23	91	37.45	-111	92	309	145 1	NRM
	37.48	-.95
SUBSYS = 1	TOTAL =	4	MODE C	TOTAL =	2
2:23:30.033 1200	1200	47	75	164	14	50.36	15.24	57.31	14	59.61	14	195	4	196 1	NRM
	15.04	52.82
2:23:30.461	JL1629 -0057	1550	1550	47	350	269	23	98.14	39.57	91.54	23	99.99	-32	-495	193	197	UAR N 1	NRM
	39.52	91.58
2:23:32.345 0250	0250	37 929	81	34.94	34.64	4.92	91	35.12	-7	76	354	75 1	NRM
	34.59	4.87
2:23:32.729 1200	1200	47 1031	90	36.73	37.10	-.73	91	37.05	-113	95	397	143 1	NRM
	37.10	-.59
SUBSYS = 1	TOTAL =	4	MODE C	TOTAL =	2
2:23:42.157 1200	1200	47	75	163	14	60.98	15.10	59.43	14	50.22	15	135	4	186 1	NRM
	15.10	58.43
2:23:42.551	JL1629 -0057	1550	1550	47	350	273	23	95.57	39.49	99.92	23	99.23	-31	-495	193	197	UAR N 1	NRM
	39.49	39.34
2:23:44.434 0260	0260	47 923	81	35.10	34.23	5.14	91	35.23	7	72	5.79 1	NRM
	34.65	5.14
2:23:44.319 1200	1200	47 1227	90	35.39	35.95	-.53	90	35.79	-110	92	306	139 1	NRM
	35.75	-.43
2:23:54.034 1200	1200	47	75	161	14	61.59	15.07	59.09	14	60.93	10	195	3	186 1	NRM
	15.12	59.05
2:23:54.453	JL1629 -0057	1550	1550	47	350	273	24	95.05	39.42	99.20	24	95.59	-29	-495	193	196	UAR N 1	NRM
	39.39	98.18
2:23:55.379 0260	0260	47 919	90	35.10	34.60	5.18	91	35.10	2	72	2	72 1	NRM
	34.34	5.35
2:23:55.707 1200	1200	47 1223	99	36.09	36.62	-.32	92	35.52	-173	76	306	132 1	NRM

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.