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 119 Original source ↗

“Japan Air Lines Flight 1628”3 pages

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…

SJBSYS = 1 TOTAL = 7 MODE C TOTAL = 3

2:36:21.451 0162 0162 47 897 77 25.35 25.14 5.51 77 25.71 -98 -57 235 120 1 NPM

2:35:21.914 5.51 0250 0260 47 945 93 20.19 20.34 2.50 83 20.57 -42 -22 242 42 1 NPM

2:36:22.651 2.50 1271 1271 47 710 1239 109 22.74 21.53 -7.29 109 22.79 -7 -4 239 8 1 NPM

2:36:22.955 JL1629 -0057 1550 27 313 1433 125 12.21 10.62 -5.56 112 11.94 -206 -509 202 551 UAR N 1 PAR

2:36:23.344 -5.42 0165 0165 47 1439 126 9.73 7.37 -5.33 123 9.53 129 54 62 143 1 NPM

2:36:23.713 -6.00 2275 2275 47 32 1573 132 21.22 14.71 -17.01 133 22.55 -34 237 351 212 1 NPM

SJBSYS = 1 TOTAL = 6 MODE C TOTAL = 3

2:36:33.301 0162 0162 17 891 78 25.03 24.92 5.31 78 25.47 -93 -69 233 115 1 NPM

2:36:33.797 5.23 0260 0260 47 919 93 22.14 20.34 2.46 83 22.55 -32 -25 232 41 1 NPM

2:36:34.243 2.42 1200 33 1225 90 35.69 36.07 -.32 92 35.98 -119 70 300 138 1 PAR

2:36:31.433 1271 1271 47 710 1239 109 22.72 21.51 -7.35 109 22.79 -7 -4 235 9 1 NPM

2:36:35.293 JL1629 -0057 1550 1550 37 311 1526 134 12.81 9.85 -7.25 125 12.31 -207 -515 201 556 UAR N 1 NPM

2:36:35.295 9.97 -7.20 0165 0165 47 19 1403 123 9.95 7.79 -5.54 125 9.66 125 74 59 146 1 NPM

2:36:35.592 2.79 -5.71 2275 2275 47 30 1555 136 21.13 14.64 -16.25 138 21.87 -27 235 353 237 1 NPM

2:36:35.592 14.57 -15.15 2275 2275 47 30 1555 136 21.13 14.64 -16.25 138 21.87 -27 235 353 237 1 NPM

SJBSYS = 1 TOTAL = 7 MODE C TOTAL = 4

2:36:45.343 0162 0162 47 894 78 24.20 24.57 5.15 73 25.11 -92 -54 235 113 1 NPM

2:36:45.723 5.07 0250 45 951 93 20.03 20.01 2.32 83 20.22 -32 -25 232 41 1 PAR

2:36:45.722 2.32 0169-1612 0260 12 949 83 20.37 20.34 2.43 16 -7 113 10 1 DEV

2:36:45.971 2.35 1230 25 1221 99 35.29 35.58 -.39 92 35.55 -119 70 300 139 1 PAR

2:36:45.536 -.09 1271 1271 47 210 1239 109 22.72 21.65 -7.32 109 22.91 -1 -6 199 6 1 NPM

2:36:47.333 JL1629 -0057 1550 1550 47 311 1510 141 13.57 9.12 -8.90 134 12.62 -212 -512 202 555 UAR N 1 NPM

2:36:47.334 -9.92 0165 0165 47 19 1377 121 10.07 3.26 -5.33 123 9.21 125 79 57 119 1 NPM

2:36:47.315 9.20 -5.45 2275 2275 47 33 1539 135 20.56 14.57 -15.45 135 21.19 -22 233 355 235 1 NPM

SJBSYS = 1 TOTAL = 8 MODE C TOTAL = 4

2:36:57.112 0162 0162 47 897 78 24.35 24.23 4.96 75 24.75 -94 -59 237 111 1 NPM

2:36:57.759 4.90 0260 0260 27 943 92 20.15 20.19 2.70 92 20.43 -18 -1 261 10 1 NPM

2:36:58.540 2.50 1271 1271 47 710 1239 108 22.95 21.64 -7.35 108 22.91 7 -6 132 9 1 NPM

2:36:59 -7.39 14.53 -15.39

Cited by

Japan Air Lines Flight 1628: The Alaska Mothership 1986

About this file

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.