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.

Read from the scan by GLM-OCR; expect the odd misread word.

BEACON STIME	TARGET REPORTS	11/18/86	PAGE	6 SYS
RANGE	ACP	DEG	Q
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	67.75	151	13	7 RT	1
2:25:59.169	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	68.12	158	13	7 RT	1
2:26:11.064	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	68.87	149	13	7	1200-3	75-3	RB	1
2:26:23.149	76.87	344	30	7	1550-3	350-3	RB	1
2:26:23.902	51.00	952	83	7 RT	1
2:26:25.405	50.87	946	83	0	1200-3	79-3	BT	1
SUBSYS = 1 TOTAL = 4 MODE C TOTAL = 3	69.50	148	13	0	1200-3	74-3	BT	1
2:26:35.174	75.37	353	31	7	1550-3	350-3	RB	1
2:26:35.925	51.50	924	81	7	1200-3	71-3	RB	1
SUBSYS = 1 TOTAL = 3 MODE C TOTAL = 3	70.00	148	13	7	1200-3	74-3	RB	1
2:26:47.256	73.87	362	31	7 RT	1
2:26:47.759	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	70.62	144	12	0	1200-1 BT	1
2:26:59.279	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	71.25	148	13	7	1200-3	75-3	RB	1
2:27:11.364	71.12	373	32	7	1550-3	350-3	RB	1
2:27:11.740	52.87	903	79	7 RT	1
2:27:13.242	50.37	890	78	7	1200-3	46-3	RB	1
	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	72.50	146	12	7	1200-3	75-3	RB	1
2:27:35.228	68.25	390	34	0	1550-3	350-3	Reserved for aircraft under Anchorage	RT
2:27:35.980	103.25	806	70	7 RT	1
2:27:37.173	52.25	875	76	7 RT	1
	52.25	875	76	7	1200-3	64-3	Airport Approach	RB
2:27:37.548	50.37	868	76	7	1200-3	64-3	Control. (Not enroute)	BT

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.