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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	RALT	PACP	PDEG	PRAN	RX	PY	DDEG	PRAN	LV	YV	EDG	SPS	ADS A	SYS CIS
-15.00	-24.39
2:45:23.475	1547	1547	47	39	1153	101	23.79	23.34	-5.53	193	23.92	0	231	0	201 1 NPM
23.31	-5.37
2:45:23.475	0152	0152	47 1297	113	19.49	17.96	-7.21	111	10.41	-23	-115	191	119 1 NPM
17.98	-7.26
2:45:23.478	1271	1271	47	710	1237	109	22.95	21.53	-7.32	109	22.90	0	1	7	1 1 NPM
21.54	-7.35
SUBSYS = 1	TOTAL = 7	MODE 0	TOTAL = 3
2:45:25.750	JL1529	-0101	1550 42 1925	169	33.74	6.18	-31.50	169	32.13	31	-191	176.423	UAR N	1 PAR
2:45:25.751	6.19	-31.50
0101=1522	1550
6.91	-33.23
	1200
-9.56	-33.39
0023=1505	1203
-9.84	-32.79
	1200
-14.49	-24.14
0032=1523	1200	1200	11	74	2392	209	29.99	.00	.20
-14.54	-26.04
0030=1624	1200	1200	11	74	2444	214	29.17	.00	.70
-16.10	-23.10
	1547	1547	42	36	1137	99	23.60	23.20	-4.99	102	23.72	-7	196	357	106 1 NPM
2:45:35.615	23.25	-4.75
	1271	1271	42	710	1238	108	22.77	21.51	-7.35	108	22.79	-9	2.283	9 1 NPM
2:45:35.390	21.57	-7.34
	0152	0152	47
17.92	-7.64
SUBSYS = 1	TOTAL = 10	MODE C	TOTAL = 4
2:45:37.904	JL1629	-0101	1550	1550	27	310	1914	168	35.56	7.03	-33.25	169	33.98	89	-520	160	510	UAR N	1 NPM
	6.95	-33.23
2:45:39.557 1270	1200	27
	-9.99	-32.85
2:45:39.930 1200
	-13.36	-23.39
2:45:39.933	0030-1523	1200	120	74	2392	209	30.45	.07	.70
	-14.90	-26.54
2:45:39.935	0030-1624	1200	120	74	2456	215	29.42	.00	.20
	-15.35	-23.23
2:45:47.053 1547	1547	47	33	1122	99	23.54	23.32	-4.42	100	23.77	-0	199	350	187 NPM
	23.29	-4.15
2:45:47.432 1271	1271	47	710	1239	108	22.73	21.51	-7.35	109	22.79	-10	0	272	10 NPM
	21.53	-7.35
2:45:47.317 0152	0162	47
	17.91	-9.01
SUBSYS = 1	TOTAL = 9	MODE C	TOTAL = 5
2:45:50.119 1200	1200	37
	-9.92	-32.42
2:45:50.798 1200
	-13.45	-23.62
2:45:50.790	0030-1523	1200	1200	32
	-15.40	-26.79
2:45:50.792	0030-1624	1200	1200	34

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.