Radar computer printout, continuous data recording

FAA via National Archives / The Black Vault · 179 pages · text by 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.

Open the PDF at page 15 Original source ↗

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p. 3 March 5, 1987 FAA, Alaskan Region Public Affairs Office 701 C Street, Box 14 Anchorage, Alaska…
p. 5 …1 2:11:45.735 2 MODE C TOTAL = 1 SUBSYS 2:11:47.619 193…
p. 6 …1200-3 Code RB 1 2 MODE C TOTAL = 2 VFR Aircraft, not under FAA control…
p. 7 …TOTAL = 2:16:10.306 4 MODE C TOTAL = 3 141.12 196 17 7 1550…
p. 8 …KB 1 SUBSYS = 1 TOTAL = 2 MODE C TOTAL = 1 2:20:46.574 52.00…
p. 9 …BT 1 SUBSYS = 1 TOTAL = 4 MODE C TOTAL = 2 2:23:34.944 60.37…
p. 10 …RB 1 SUBSYS = 1 TOTAL = 3 MODE C TOTAL = 3 67.75 151 13 7 RT…
p. 11 …BEACON ALT SUBSYS = 1 TOTAL = 6 MODE C TOTAL = 3 73.12 147 12 ? 1200-3…
p. 12 …BT 1 SUBSYS = 1 TOTAL = 5 MODE C TOTAL = 2 2:29:36.369 54.75…
p. 13 …3 81-3 RB 1 3 MODE C TOTAL = 2 SUBSYS = 1 TOTAL = 2:32:01…
p. 14 …3 98-3 RB 1 3 MODE C TOTAL = 1 SUBSYS = 1 TOTAL = 2:34:38…
p. 15 …BT 1 SUBSYS = 1 TOTAL = 4 MODE C TOTAL = 2 2:37:02.268 103.25…
p. 16 …TOTAL = 2:39:38.625 2 MODE C TOTAL = 48.75 898 78 7 1200-3…
p. 17 …MODE C TOTAL = 1 SUBSYS = 1 TOTAL = 2:44:51.393 1 MODE C TOTAL = 1…
p. 18 …TOTAL = 2:46:51.820 1 MODE C TOTAL = 52.87 935 82 7 1200-3…
p. 22 …RB | 1 | | SUBSYS = 1 TOTAL = 1 MODE C TOTAL = 1 | | | | | | | | | | 2:11:45.735 | 193.12…
p. 23 STIME RANGE ACP DEG Q BEACON ALT QUAL SYS SUBSYS = 1 TOTAL = 1 MODE C TOTAL…
p. 26 …PAGE | PDEG | PRAN | RX | RY | DDEG | DRAN | XV | YV | UDG | SPD | ADS_C | AGE | SYS_CLS | | :--- | :---
p. 27 …ADS C | SYS GLE | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | 14.27 | 174.49 | | | | | | | | | | | | | | | | SUBSYS = 1 | TOTAL = 1 MODE C TOTAL = 1…
p. 28 …DDEG DBAN XV YV HDG SPD ADS C SYS CLS 2:17:05.513 JL1623 -0057…
p. 29 …HDG SPD ADS C SYS DIS SUBSYS = 1 TOTAL = 1 MODE C TOTAL = 1 2:20…
p. 31 …RB | 1 | | SUBSYS = 1 TOTAL = 1 MODE C TOTAL = 1 | 2:21:11.041 | 117.02…
p. 32 …RB | 1 | | SUBSYS = 1 TOTAL = 3 MODE C TOTAL = 2 | | | | | | | | | | 2:25:13.579 | 49.37…
p. 33 …RB | 1 | | | SUBSYS = 1 TOTAL = | 3 MODE C TOTAL = | | | | | | | | | | | | 2:29:43.174 | 50.00 | 449…
p. 34 …BT | 1 | | | SUBSYS = 1 TOTAL = 2 MODE C TOTAL = 1 | | | | | | | | | | | 2:20:34.493 | 51.37…
p. 35 …BT | 1 | | SUBSYS = 1 TOTAL = 3 MODE C TOTAL = 1 | | | | | | | | | | 2:24:10.961 | 62.25…
p. 36 …BT | 1 | | | SUBSYS = 1 TOTAL = 3 MODE C TOTAL = 1 | 69.25 | 390 | 34 | 0 | 1552…
p. 37 …QUA | SYS | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | SUBSYS = 1 TOTAL = 3 MODE C TOTAL = 1 | 51.00 | 900 | 79 | 0 | 1200…
p. 40 …DDEG DPAN XV XV HDG SPD ADS C SYS DIS 2:20:05.300 1200 1200…
p. 41 …3.53 SUBSYS = 1 TOTAL = 4 MODE C TOTAL = 2 2:21:29.914 1200 04…
p. 42 …ADS C PAGE 7 34.59 4.04 SUBSYS = 1 TOTAL = 3 MODE C TOTAL = 1…
p. 43 …SPD ADS C PAGE 4 SYS CLS SUBSYS = 1 TOTAL = 4 MODE C TOTAL = 2 2…
p. 44 …1 NPM SUBSYS = 1 TOTAL = 7 MODE C TOTAL = 3 2:25:19.109 1200 1200…
p. 45 …DDEJ DRAN XV YV HDG SPD ADS.C PAGE SYS CLS 2:25:53.590 0024…
p. 46 …DDEG DRAN XV YV EDC SPD ADS.C PAGE SYSCLS PRAN RI 2:26:55.695…
p. 47 …7.64 SUBSYS = 1 TOTAL = 10 MODE C TOTAL = 4 2:45:37.904 JL1629 -0101…
p. 48 …115 1 NPM SUBSYS=1 TOTAL= 7MODE C TOTAL= 4 2:45:22.138 1200 1200…
p. 49 …2:46:50.720 TOTAL = 5 MODE C TOTAL = 3 2:46:51.295 -7.92…
p. 50 SUBSYS = 1 TOTAL= 5 MODE C TOTAL= 3 2:47:39.757 1200 1200 47 2183…
p. 51 …15.95 -12.07 TOTAL = 5 MODE C TOTAL = 3 2:48:25.690 0166 0166…
p. 52 11.37 -11.50 SUBSYS=1 TOTAL= 5MODE C TOTAL= 3 2:49:14.957 0166…
p. 53 …DDEG DRAN XV YV PEG SPD ADS C 2:49:59.233 0000 0000 22 947…
p. 54 C.D.R. EDITOR LISTING JL1523 AFTER 350 TURN DATA SELECTED RB BT RT TD FILTERS…
p. 56 …OUA | SYS | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | SUBSYS = 1 | TOTAL = 2 | MODE C | TOTAL = 2 | | | | | | RB | 1 | | 2:52:19.422…
p. 57 …RB | 1 | | SUBSYS = 1 TOTAL = 1 MODE C TOTAL = 2:57:31.650 | 132.87 | 1932…
p. 58 …3 RB SUBSYS = 1 TOTAL = 2 MODE C TOTAL = 2 3:00:19.393 117.12…
p. 60 SUBSYS = 1 TOTAL = 3 MODE C TOTAL = 3 2:49:19.392 105.25 1914 159…
p. 61 …BT | 1 | | | | SUBSYS = 1 TOTAL = | 2 MODE C TOTAL = | 2 | | | | | | | | | | | | 2:52:05.954 | 125.37…
p. 62 …QUA | SYS | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | SUBSYS = 1 TOTAL = 2 MODE C TOTAL = 2 | 115.12 | 1933 | 169 | 0 | 1550…
p. 63 …TOTAL = 2:59:32.069 | 1 MODE C TOTAL = 142.52 | 1939 | 170 | 0 | 4371-3…
p. 69 HADAN ONLY TARGET REPORTS STINE RANGE AGE DES Q BEAGON ALT PAGE C 2:53:07…
p. 78 …DDEG DRAN EV YV UDC SPE AES C SYS GIS 2:45:01.324 TOTEM71-0144…
p. 81 …DDEG DRAN XY IV HDG SPD ADS C FAUF STS GIS 2:42:01.243 25…
p. 84 …DDEG DRAN LV YV EDG SPD ADS.C SYSCIS 2:51:02.304 0000 24 1925…
p. 85 …DDE2 DRAN XV IV BDG SPD ADS C SYS CIS 2:52:02.363 0000 24…
p. 86 …DDEG DRAN XV YV HPG SPD ADS C 2:53:02.277 TOTEM71-2144 4371 47…
p. 87 …18/96 XV YV HDG SPD ADS C PAGE 14 SYS CLS PRAN RX RY DDEG…
p. 88 …111.70 SUBSYS = 1 TOTAL = 5 MODE C TOTAL = 2 2:55:25.341 TOTEM71-0144…
p. 89 …142.71 SUBSYS = 1 TOTAL = 7 MODE C TOTAL = 3 2:56:39.504 TOTEM71-0144…
p. 90 …DDEG DRAN XV XV HDG SPD ADS C SYS GLS 2:57:03.319 0222 25…

BEACON TARGET REPORTS STIME	11/18/86	ALT	PAGE	11 SYS
RANGE	ACP	LEG	Q
	36.37	1025	90	0	1721-3	484-3	BT	1
	36.75	1031	90	0	4441-1 BT	1
SUBSYS = 1 TOTAL =	4 MODE C TOTAL =	2
2:37:02.268	103.25	805	70	7 RT	1
2:37:02.645	50.62	859	75	7	1200-3	98-3	RB	1
2:37:03.023	36.75	1028	90	0	4441-3	6-3	BT	1
SUBSYS = 1 TOTAL =	3 MODE C TOTAL =	2
2:37:14.414	49.87	860	75	7	1200-3	82-3	RB	1
	51.12	860	78	7 RT	1
2:37:14.789	36.75	1029	90	0	4441-3	292-3	BT	1
SUBSYS = 1 TOTAL =	3 MODE C TOTAL =	2
2:37:26.437	103.25	806	70	7 RT	1
	51.37	873	76	7 RT	1
	49.50	887	77	0	1200-3	64-3	BT	1
2:37:26.938	36.75	1028	90	0	4441-3 BT	1
SUBSYS = 1 TOTAL =	4 MODE C TOTAL =	1
2:37:38.839	49.00	895	78	7	1200-3	55-3	RB	1
	36.75	1029	90	0	4441-3	292-3	BT	1
SUBSYS = 1 TOTAL =	2 MODE C TOTAL =	2
2:37:50.299	48.25	768	67	0	1200-3 BT	1
2:37:50.800	48.12	906	70	7 RT	1
	48.25	901	79	0	1200-3	52-3	BT	1
2:37:51.050	36.75	1028	90	0	4441-3	292-3	BT	1
SUBSYS = 1 TOTAL =	4 MODE C TOTAL =	2
2:38:02.753	48.37	879	77	7 RT	1
	47.62	918	80	7	1200-3	53-3	RB	1
2:38:03.129	36.75	1029	90	0	4441-3	6-3	BT	1
SUBSYS = 1 TOTAL =	3 MODE C TOTAL =	2
2:38:14.771	47.87	927	81	7 RT	1
	48.00	934	82	0	1200-3	72-3	BT	1
2:38:15.146	36.75	1028	90	0	4441-3	292-3	BT	1
SUBSYS = 1 TOTAL =	3 MODE C TOTAL =	2
2:38:26.485	46.62	897	78	7 RT	1
2:38:26.861	48.62	923	81	0	1200-3	90-3	BT	1
	48.75	940	82	0	1200-3 BT	1
2:38:27.238	36.75	1028	90	0	4441-3	6-3	BT	1
SUBSYS = 1 TOTAL =	4 MODE C TOTAL =	2
2:38:38.956	49.12	918	80	0	1200-3	95-3	BT	1
	36.75	1029	90	0	4441-3 BT	1
SUBSYS = 1 TOTAL =	2 MODE C TOTAL =	1
2:38:50.604	46.50	938	81	7 RT	1
2:38:50.979	49.12	903	79	7	1200-3	90-3	RB	1
	36.75	1029	90	0	4441-3 BT	1
SUBSYS = 1 TOTAL =	3 MODE C TOTAL =	1
2:39:02.818	48.37	895	78	7	1200-3	103-3	RB	1
2:39:03.193	36.75	1029	90	0	4441-3	292-3	BT	1
SUBSYS = 1 TOTAL =	2 MODE C TOTAL =	2
2:39:14.908	47.62	899	79	7 RT	1
	47.75	896	78	0	1200-3	124-3	BT	1
2:39:15.283	36.75	1029	90	0	4441-3	292-3	BT	1
SUBSYS = 1 TOTAL =	3 MODE C TOTAL =	2
2:39:26.927	47.12	903	79	7	1200-3	123-3	RB	1
2:39:27.304	36.75	1016	89	0	4441-3	202-3	BT	1

Cited by

Japan Air Lines Flight 1628: The Alaska Mothership 1986

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Document, cited by the archive. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 179 pages are in the text index: search them above, or from the library's search.