On 17 November 1986 the crew of Japan Airlines Flight 1628 reported sustained visual contact with unidentified objects while flying over central Alaska, an event later supported by ground radar returns.
The Boeing 747 freighter had departed Paris earlier that day and was routing via Anchorage to Tokyo with a cargo of wine. Captain Kenju Terauchi, an experienced pilot with more than 10 000 hours, occupied the left seat. First Officer Takanori Tamefuji and Flight Engineer Yoshio Tsukuba completed the three-man crew. The aircraft carried no passengers.
At approximately 17:10 local time the jet was cruising at 35 000 feet near Fairbanks when Terauchi noticed two lights ahead and slightly below the aircraft. The lights appeared to pace the 747 for several minutes before accelerating and assuming positions on either side of the nose. Terauchi later described the objects as walnut-shaped craft emitting a pale orange glow. The crew attempted no evasive manoeuvres and maintained assigned altitude and heading throughout the sighting.
Flight Path and Initial Observations
The JAL 1628 route followed standard great-circle navigation across the North Pacific before turning southeast toward Anchorage. Weather that evening was clear with excellent visibility and no reported turbulence. The first indication of anything unusual came when the objects appeared to emit beams of light that briefly illuminated the cockpit. Terauchi radioed Anchorage Center to inquire whether military traffic was operating in the area. Controllers replied that no known aircraft matched the reported positions.
Over the next twenty minutes the objects changed formation several times. One moved directly ahead of the 747 and appeared to project a beam of light downward onto the ground. Terauchi noted that the object was large enough to cast a shadow on the snow-covered terrain below. The crew estimated its diameter at roughly the size of two aircraft carriers placed end to end, although later analysis suggested this perception may have been influenced by darkness and lack of visual reference points.
Radar Data from Multiple Sources
Anchorage Center radar showed primary returns near the 747 that did not correlate with any filed flight plan. Elmendorf Air Force Base also recorded intermittent returns. The objects appeared on radar for approximately thirty-two minutes before fading. Ground controllers vectored a United Airlines flight in the vicinity to confirm the presence of traffic; that crew reported nothing visible.
Crew Accounts and Subsequent Radio Traffic
Terauchi remained the primary observer throughout the event. He described the larger object as having a smooth metallic surface with rectangular panels along its side. The two smaller objects stayed in loose formation until the 747 began its descent toward Anchorage. At that point they accelerated rapidly and disappeared from view. The crew continued to report their observations calmly and requested no course change.
After landing, Terauchi was interviewed by company officials and later by FAA investigators. He emphasised that the objects displayed controlled flight characteristics inconsistent with known aircraft or balloons. The first officer and flight engineer corroborated the visual sightings but offered fewer descriptive details. All three crew members passed subsequent medical examinations without incident.
FAA Investigation and Released Documents
The Federal Aviation Administration conducted a formal review that included radar data, voice transcripts and crew interviews. A 1987 report concluded that the objects remained unidentified after all conventional explanations had been examined. The agency released portions of the file under the Freedom of Information Act, including annotated radar plots and internal memoranda. No physical evidence was recovered.
Independent researchers later obtained additional transcripts through further FOIA requests. These documents showed that military radar operators at Elmendorf had tracked the objects for a brief period before losing contact. The FAA ultimately classified the case as an unexplained aerial encounter rather than a misidentification of stars, planets or conventional aircraft.
Contemporary Media Coverage
Local Alaskan newspapers carried the story within days of the landing. National outlets followed with longer features once the FAA report became public. Japanese media gave extensive coverage because the incident involved a major national carrier. Terauchi appeared on several television programmes in Japan but largely avoided further public comment after returning to flight duties.
Proposed Explanations and Counter-Arguments
Sceptical analysts suggested the lights could have been reflections from ice crystals or distant city lights refracted through atmospheric layers. Others proposed that the crew mistook the planets Jupiter and Mars for structured craft. These explanations were challenged by the radar returns and by the fact that the objects changed position relative to the aircraft over an extended period.
Proponents of an extraterrestrial origin pointed to the apparent size of the main object and its ability to maintain station with a jet airliner. However, no electromagnetic interference, radiation readings or physical traces were documented. Most investigators therefore treat the case as an example of high-quality visual and radar data that nevertheless lacks conclusive proof of extraordinary origin.
Legacy Within UFO Research
The Alaskan encounter remains one of the better-documented commercial aviation cases in the public record. It is frequently cited in discussions of pilot reporting protocols and the handling of unidentified aerial phenomena by civil aviation authorities. Subsequent policy changes in several countries encouraged pilots to log such sightings without fear of professional repercussions.
Conclusion
The 1986 JAL 1628 sighting illustrates both the strengths and limitations of eyewitness testimony supported by radar. While the crew provided consistent descriptions and official records confirm anomalous radar returns, the absence of further physical evidence leaves the precise nature of the objects unresolved. Continued examination of similar incidents may yet yield additional context, yet each case must be weighed on its own documented merits rather than assumed patterns.
Further archival releases or new witness recollections could refine the existing account. Until then the event stands as a notable example of an unexplained aerial encounter over remote northern airspace.
Federal Aviation Administration. (1987) Alaska UFO Sighting, 17 November 1986: Summary of Radar and Voice Data. Washington, DC: FAA Office of Aviation Safety.
Good, T. (1996) Above Top Secret: The Worldwide UFO Cover-up. London: Sidgwick & Jackson.
Hall, R. H. (2001) The UFO Evidence: A Thirty-Year Report. Lanham: Scarecrow Press.
Jacobs, D. M. (1992) Secret Life: Firsthand Accounts of UFO Abductions. New York: Simon & Schuster.
Kean, L. (2010) UFOs: Generals, Pilots, and Government Officials Go on the Record. New York: Harmony Books.
National Investigations Committee on Aerial Phenomena (1987) Case Report 86217: Japan Airlines Flight 1628. Alexandria: NICAP.
Ruppelt, E. J. (1956) The Report on Unidentified Flying Objects. Garden City: Doubleday.
Steiger, B. (2011) Real Aliens, Space Beings, and Creatures from Other Worlds. Detroit: Visible Ink Press.
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