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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.

Open the PDF at page 131 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…

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

TIME ACID/SX ABC/SY BBC FRM RALT PACP PDEG PRAN RY RY DDEG DRAN XV YV UDC SRD ADS C SYS CLS

21.53 -7.32

2:44:11:935 1547 1547 47 59 1263 111 24.95 23.17 -9.67 112 25.16 22 229 5 231 1 NPM

23.20 -9.21

SUBSYS = 1 TOTAL = 9 MODE C TOTAL = 4

2:44:13.213 JL1629 -0101 1550 1550 47 319 1395 165 23.92 5.29 -21.73 165 22.30 65 -458 172 125 UAR N 1 NPM

5.29 -21.70

2:44:13.595 1550 1550 22 319 1939 170 24.11 3.56 -22.20 170 22.55 128 -471 164.497 1 NPM

3.56 -22.20

2:44:15.086 1200 1200 47 74 2431 213 30.69 -17.64 -25.52 214 31.30 163 62 69 175 1 NPM

-17.57 -25.73

2:44:22.324 0250 45 950 83 20.22 19.98 2.23 83 20.12 4 -2 121 5 1 NPM

20.07 2.29

2:44:23.496 1547 1547 47 56 1241 109 24.22 23.29 -8.58 112 24.93 22 235 5.238 1 NPM

23.29 -9.90

2:44:23.499 0152 0152 47 1221 107 19.05 19.35 -5.29 105 19.10 -41 -113 200 121 1 NPM

19.32 -5.29

2:44:23.500 1271 1271 47 1238 108 22.79 21.64 -7.35 108 22.91 -2 -5 182 5 1 NPM

21.54 -7.35

SUBSYS = 1 TOTAL = 7 MODE C TOTAL = 4

2:44:25.277 JL1629 -0101 1550 1550 47 310 1970 156 25.55 5.56 -23.46 166 24.75 69 -473 171 490 UAR N 1 NPM

5.53 -23.31

2:44:25.519 1550 21 1934 169 25.74 4.01 -23.76 170 24.16 128 -471 164 497 1 NPM

4.01 -23.76

2:44:25.793 1200 1200 47 74 2427 213 30.14 -17.12 -25.37 214 30.79 157 75 54 174 1 NPM

-17.06 -25.45

2:44:34.725 0260 47 950 93 20.20 19.98 2.32 83 20.19 0 -2 160 2 1 NPM

22.05 2.29

2:44:35.443 1547 1547 47 52 1222 107 24.53 23.31 -9.29 109 24.81 19 231 4 233 1 NPM

23.34 -8.15

2:44:35.457 0162 0152 47 1235 109 19.19 18.37 -5.71 107 19.27 -27 -119 193 121 1 NPM

19.29 -5.70

2:44:35.459 1271 1271 47 710 1238 109 22.95 21.65 -7.32 109 22.91 7 -4 121 9 1 NPM

21.60 -7.35

SUBSYS = 1 TOTAL = 7 MODE C TOTAL = 4

2:44:37.355 JL1629 -0101 1550 1550 47 310 1931 157 27.17 5.97 -24.93 165 25.55 22 -474 170 181 UAR N 1 NPM

5.81 -24.99

2:44:37.724 1550 23 310 1935 170 27.35 4.28 -25.37 172 25.92 114 -472 162 495 1 NPM

4.31 -25.37

2:44:39.494 1200 1200 47 2252 197 35.75 -11.25 -34.43 199 35.32 58 116 36 129 1 NPM

-11.25 -34.39

2:44:39.891 1200 1200 47 74 2421 212 29.51 -16.50 -25.12 213 30.29 154 92 61 174 1 NPM

-16.56 -25.15

2:44:45.525 0250 45 950 93 20.20 20.05 2.28 83 20.25 0 -2 152 2 1 PAP

20.05 2.29

2:44:45.528 0160-1614 0260 11 249 93 20.17 00 20 1 1 -2 220 1 1 PS

20.04 2.29

2:44:45.534 0150-1521 0260 11 249 93 20.21 00 30 1 1 1 54 1 1 LT

20.07 2.29

2:44:47.292 1547 1547 47 49 1204 105 24.32 23.29 -2.55 107 24.54 11 226 2.227 1 NPM

23.34 -7.40

2:44:47.290 0162 0162 47 1248 139 19.27 19.23 -6.14 109 19.28 -23 -119 191 122 1 NPM

19.20 -6.10

2:44:47.291 1271 1271 47 713 1239 109 22.93 21.54 -2.35 109 22.91 0 -2 111 2 1 NPM

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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.