Documents / Document

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.

BEACON STIME	TARGET REPORTS	11/18/86	PAGE	6 SYS
RANGE	AGP	DEG	Q	BEACON	ALT	QUA
2:25:47.153	67.00	150	13	0	1200-3	75-3 BT	1
2:25:47.529	81.37	328	28	7	1550-3	350-3 RB	1
2:25:49.408	49.25	983	86	7	1200-3	105-3 RB	1
SUBSYS = 1 TOTAL =	3 MODE C TOTAL =	3
2:25:59.169	67.75	151	18	7 RT	1
	67.62	151	13	0	1200-3	75-3 BT	1
2:25:59.543	79.87	331	29	7	1550-3	350-3 RB	1
2:26:01.485	49.75	967	84	0	1200-3	97-3 BT	1
SUBSYS = 1 TOTAL =	4 MODE C TOTAL =	3
2:26:11.064	68.12	158	13	7 RT	1
	68.25	150	13	0	1200-3	75-3 BT	1
2:26:11.814	78.37	338	29	7	1550-3	350-3 RB	1
2:26:13.318	50.37	955	83	0	1200-3	88-3 BT	1
SUBSYS = 1 TOTAL =	4 MODE C TOTAL =	3
2:26:23.149	66.87	149	13	7	1200-3	75-3 RB	1
2:26:23.902	76.87	344	30	7	1550-3	350-3 RB	1
2:26:25.405	51.00	952	83	7 RT	1
	50.87	946	83	0	1200-3	79-3 BT	1
SUBSYS = 1 TOTAL =	4 MODE C TOTAL =	3
2:26:35.174	69.50	148	13	0	1200-3	74-3 BT	1
2:26:35.925	75.37	353	31	7	1550-3	350-3 RB	1
2:26:37.429	51.50	924	81	7	1200-3	71-3 RB	1
SUBSYS = 1 TOTAL =	3 MODE C TOTAL =	3
2:26:47.256	70.00	148	13	7	1200-3	74-3 RB	1
2:26:47.759	73.87	362	31	7 RT	1
	74.00	360	31	7	1550-3	350-3 RB	1
2:26:49.514	51.62	917	80	7 RT	1
	51.75	916	80	0	1200-3	61-3 BT	1
SUBSYS = 1 TOTAL =	5 MODE C TOTAL =	3
2:26:59.279	70.62	144	12	0	1200-1 BT	1
	70.75	150	13	7	1200-3	75-3 RB	1
2:26:59.654	72.50	366	32	7	1550-3	350-3 RB	1
2:27:01.220	52.62	911	80	7 RT	1
2:27:01.594	51.12	902	79	7	1200-3	45-3 RB	1
SUBSYS = 1 TOTAL =	5 MODE C TOTAL =	3
2:27:11.364	71.25	148	13	7	1200-3	75-3 RB	1
2:27:11.740	71.12	373	32	7	1550-3	350-3 RB	1
2:27:13.242	52.87	903	79	7 RT	1
	50.37	890	78	7	1200-3	46-3 RB	1
SUBSYS = 1 TOTAL =	4 MODE C TOTAL =	3
2:27:23.203	71.50	149	13	7 RT	1
	71.87	147	12	0	1200-3	75-3 BT	1
2:27:23.954	69.62	363	33	7	1550-3 RB	1
	69.87	392	34	0	0000-0 BT	1
2:27:25.457	49.87	876	76	7	1200-3	56-3 RB	1
2:27:25.833	37.12	1034	90	0	0162-3 BT	1
SUBSYS = 1 TOTAL =	6 MODE C TOTAL =	2
2:27:35.228	72.50	146	12	7	1200-3	75-3 RB	1
2:27:35.980	68.25	390	34	0	1550-3	350-3 BT	1
2:27:37.173	103.25	806	70	7 RT	1
	52.25	875	76	7 RT	1
2:27:37.548	50.37	868	76	7	1200-3	64-3 RB	1
	36.87	1035	90	0	0162-3 BT	1

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.