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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.

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

ELACON TARGET REPORTS STIME	11/18/86	PAGE	3 SYS
RANGE	AOP	DEG	Q
2:17:58.464	142.62	196	17	7
142.75	196	17	0	1550-3	350-3
43.62	208	18	0	1200-3	74-3
36.00	1022	89	0	0313-3	8-3
SUBSYS = 1 TOTAL = 2:16:10.306	4 MODE C TOTAL = 3
141.12	196	17	7	1550-3	350-3
44.12	206	18	0	1200-3	74-3
35.62	1005	88	0	0313-1
35.75	1017	89	0	0313-3	11-3
SUBSYS = 1 TOTAL = 2:18:22.327	4 MODE C TOTAL = 3
139.62	199	17	7	1550-3	350-3
44.75	205	18	0	1200-3	74-3
35.37	1006	88	0	0313-3	13-3
SUBSYS = 1 TOTAL = 2:18:24.956	3 MODE C TOTAL = 3
137.87	201	17	7	1550-3	350-3
45.37	202	17	0	1200-3	74-3
SUBSYS = 1 TOTAL = 2:18:34.415	2 MODE C TOTAL = 2
136.25	203	17	7	1550-3	350-3
45.87	199	17	0	1200-3	74-3
SUBSYS = 1 TOTAL = 2:18:46.495	2 MODE C TOTAL = 2
134.62	206	18	7
134.75	206	18	0	1550-3	350-3
46.50	196	17	0	1200-3	75-3
SUBSYS = 1 TOTAL = 2:19:00.394	103.25	807	70	7
4 MODE C TOTAL = 2
47.12	194	17	0	1200-3	75-3
SUBSYS = 1 TOTAL = 2:19:10.600	133.12	208	18	7	1550-3	350-3
2 MODE C TOTAL = 2
47.75	192	16	0	1200-3	75-3
SUBSYS = 1 TOTAL = 2:19:22.426	131.50	210	18	7	1550-3	350-3
103.37	806	70	7
144.50	48	4	7
4 MODE C TOTAL = 2
SUBSYS = 1 TOTAL = 2:19:34.636	48.37	190	16	0	1200-3	75-3
129.87	213	16	7	1560-3	350-3
2 MODE C TOTAL = 2
48.87	179	15	0	1200-3	74-3
SUBSYS = 1 TOTAL = 2:19:46.535	49.00	196	17	0	1200-3
128.25	214	18	7	1550-3	350-3
144.62	45	3	7
4 MODE C TOTAL = 2
SUBSYS = 1 TOTAL = 2:19:58.623	49.50	185	16	0	1200-3	74-3
126.62	216	18	7	1550-3	350-3
2 MODE C TOTAL = 2
50.25	169	16	7	0000-0
SUBSYS = 1 TOTAL = 2:20:10.640	50.12	184	16	0	1200-3
125.00	218	19	7	1550-3	350-3
3 MODE C TOTAL = 1
50.75	181	15	0	1200-3	74-3
SUBSYS = 1 TOTAL = 2:20:22.662	123.37	225	19	7
123.50	222	19	7	1550-3	350-3
3 MODE C TOTAL = 2
51.37	160	15	0	1200-3

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.