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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.

BEACON	TARGET REPORTS STIME	RANGE	AGP	DEG	Q	11/18/86 BEACON	ALT	PAGE	12 SYS
SUBSYS = 1 TOTAL = 2:39:38.625	2 MODE C TOTAL = 48.75	898	78	7 1200-3	115-3	RT	1

SUBSYS = 1 TOTAL = 2:39:51.091	3 MODE C TOTAL = 48.12	923	81	7	1200-3	111-3	RB	1

SUBSYS = 1 TOTAL = 2:40:02.733	2 MODE C TOTAL = 47.12	895	79	7	1200-3	82-3	RB	1

SUBSYS = 1 TOTAL = 2:40:03.110	3 MODE C TOTAL = 48.75	917	80	7	1200-3	82-3	RB	1

SUBSYS = 1 TOTAL = 2:40:15.441	3 MODE C TOTAL = 36.87	1023	89	0	4441-3	6-3	BT	1

SUBSYS = 1 TOTAL = 2:40:27.032	3 MODE C TOTAL = 48.75	895	78	7	1200-3	61-3	RB	1

SUBSYS = 1 TOTAL = 2:40:27.408	3 MODE C TOTAL = 36.87	1029	90	0	4655-1 BT	1

SUBSYS = 1 TOTAL = 2:40:39.050	3 MODE C TOTAL = 49.25	887	77	7	1200-3	76-3	RB	1

SUBSYS = 1 TOTAL = 2:40:39.425	3 MODE C TOTAL = 36.87	1028	90	0	4441-3	6-3	BT	1

SUBSYS = 1 TOTAL = 2:40:51.130	3 MODE C TOTAL = 49.75	897	78	7	1200-3	85-3	RB	1

SUBSYS = 1 TOTAL = 2:40:51.504	36.75	1027	90	0	4441-3 BT	1

SUBSYS = 1 TOTAL = 2:41:02.834	2 MODE C TOTAL = 49.67	906	79	7 1200-3	90-3	BT	1

SUBSYS = 1 TOTAL = 2:41:03.208	50.00	909	79	0	1200-3	90-3	BT	1

SUBSYS = 1 TOTAL = 2:41:15.036	3 MODE C TOTAL = 49.87	912	80	0	1200-3 BT	1

SUBSYS = 1 TOTAL = 2:41:15.411	36.87	1028	90	0	4441-3	6-3	BT	1

SUBSYS = 1 TOTAL = 2:41:27.123	49.12	916	80	0	1200-3	70-3	BT	1

SUBSYS = 1 TOTAL = 2:41:38.780	48.00	776	68	0	0000-0 BT	1

SUBSYS = 1 TOTAL = 2:41:39.156	48.00	907	79	7	1200-3	38-3	RB	1

SUBSYS = 1 TOTAL = 2:41:51.245	47.37	909	79	0	1200-3	79-3	BT	1

SUBSYS = 1 TOTAL = 2:42:02.948	49.50	901	79	7 1200-3	94-3	BT	1

SUBSYS = 1 TOTAL = 2:42:14.966	49.12	904	79	7 1200-3	99-3	BT	1

SUBSYS = 1 TOTAL = 2:42:15.343	47.62	924	81	0	1200-3	99-3	BT	1

SUBSYS = 1 TOTAL = 2:42:27.173	48.12	928	81	7 1200-3	97-3	BT	1

SUBSYS = 1 TOTAL = 2:42:39.257	48.12	919	80	7	1200-3	63-3	RB	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.