The Japan Airlines Flight 1628 Encounter: What Followed a 747 Over Alaska?

On November 17, 1986, Japan Air Lines Flight 1628 crossed the dark interior of Alaska on its way to Anchorage when its three-person Boeing 747 cargo crew reported unfamiliar lights where Anchorage Center had no known traffic.

A January 9, 1987 certified Anchorage ARTCC transcript preserves the radio exchanges in real time: traffic checks, changing headings, military radar discussions, and attempts to obtain confirmation from other aircraft. Captain Kenju Terauchi later described two illuminated objects and a far larger dark form. First Officer Takanori Tamefuji and Flight Engineer Yoshio Tsukuba separately confirmed unusual lights, though the captain supplied the most detailed descriptions.

FAA records include crew interviews, drawings, controller statements, flight-path material, continuous radar-data printouts, and a later technical analysis. The documentation confirms an unusual aviation incident, but it also exposes the central dispute: intermittent radar indications did not provide a continuous, unambiguous track of the object Terauchi described.

Did Flight 1628 encounter an unknown physical object, or did bright astronomical lights, nighttime perception, and ambiguous radar returns combine into one extraordinary experience?

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YES OR NO: Did an unknown physical object fly near Japan Airlines Flight 1628 over Alaska??????