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 67 Original source ↗

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

JAPAN ONLY TARGET REPORTS

STIME RANGE AQP DEQ Q 11/18/86 BEAGON ALT PAGE 4

QUA SYS

2:50:03.719 93.25 1968 164 ? RT 1

2:50:27.097 113.75 1965 172 ? RT 1

111.25 1981 174 ? RT 1

2:50:37.172 147.62 2051 191 ? RT 1

141.00 2054 191 ? RT 1

159.75 2167 190 ? RT 1

SUBSYS = 1 TOTAL = 6

2:50:19.253 113.97 1969 173 ? RT 1

114.25 1980 174 ? RT 1

114.37 2017 177 ? RT 1

2:50:19.122 111.20 2052 191 ? RT 1

117.75 2055 191 ? RT 1

2:50:19.743 159.62 2168 190 ? RT 1

SUBSYS = 1 TOTAL = 6

2:52:31.017 113.97 1955 172 ? RT 1

111.25 1979 173 ? RT 1

114.12 2015 177 ? RT 1

117.87 2056 190 ? RT 1

2:50:31.517 111.20 2052 191 ? RT 1

144.12 2092 193 ? RT 1

2:50:31.821 159.75 2167 190 ? RT 1

SUBSYS = 1 TOTAL = 7

2:50:13.112 111.25 1977 173 ? RT 1

2:50:13.193 144.12 2051 191 ? RT 1

117.62 2055 191 ? RT 1

144.37 2095 194 ? RT 1

159.52 2159 190 ? RT 1

SUBSYS = 1 TOTAL = 5

2:50:59.137 144.25 1977 173 ? RT 1

114.00 2016 177 ? RT 1

2:50:55.512 111.37 2059 190 ? RT 1

117.75 2072 192 ? RT 1

144.37 2091 193 ? RT 1

159.75 2156 190 ? RT 1

SUBSYS = 1 TOTAL = 5

2:51:05.701 32.52 1992 166 ? RT 1

2:51:07.165 144.25 1979 173 ? RT 1

111.37 2017 177 ? RT 1

2:51:07.540 114.00 2050 191 ? RT 1

149.75 2157 199 ? RT 1

159.75 2158 190 ? RT 1

SUBSYS = 1 TOTAL = 5

2:51:19.923 31.12 1939 155 ? RT 1

2:51:19.193 113.75. 1957 172 ? RT 1

114.25 1979 173 ? RT 1

2:51:19.574 114.00 2079 192 ? RT 1

159.75 2157 190 ? RT 1

SUBSYS = 1 TOTAL = 5

2:51:31.153 143.97 1963 172 ? RT 1

144.25 1976 173 ? RT 1

2:51:31.502 114.00 2052 191 ? RT 1

2:51:31.953 149.75 2155 199 ? RT 1

159.62 2157 190 ? RT 1

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 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.