# The lights that shadowed Japan Airlines Flight 1628 over Alaska in 1986 were an extraterrestrial or otherwise non-human craft

**No verdict.** The encounter is real and unusually well documented: on 17 November 1986, over eastern Alaska, the veteran crew of a Japan Airlines 747 cargo jet reported lights that paced their aircraft for the better part of an hour, and the FAA released a thick package of controller transcripts, crew interviews, and radar printouts rather than burying the case. The claim we rate is narrower and larger: that the objects were an extraterrestrial or non-human craft. That claim is unproven. Captain Terauchi and his crew were judged sober, professional, and sincere, and no prosaic account has closed the case to everyone's satisfaction; but the FAA's own radar review attributed the ambiguous ground return to a split reading of the 747 itself, two nearby aircraft sent to look saw nothing, and skeptics point to bright planets low on the horizon. A genuinely puzzling, officially recorded sighting is not the same thing as a confirmed spacecraft.

Category: UFOs & Aliens · Era: 1980s · First circulated: Late December 1986, after United Press International and other outlets reported that an FAA controller had confirmed tracking an object near the JAL flight; the story spread widely again in 2001 when former FAA official John Callahan described a high-level review of the case · Believed by: A broad audience of UFO researchers and aviation enthusiasts, for whom JAL 1628 is a touchstone case: it pairs credible airline-crew witnesses with an unusually open government paper trail. National polling over the past decade has repeatedly found that roughly two-thirds of US adults think the government knows more about UFOs than it says, and cases like this one are the sort most often cited.
URL: https://theconspiratory.com/theory/jal-flight-1628

## Summary
On the evening of 17 November 1986, Japan Airlines Flight 1628, a Boeing 747 freighter ferrying French wine from Paris to Tokyo, was cruising at 35,000 feet over eastern Alaska on the leg from Reykjavik to Anchorage. Captain Kenju Terauchi reported two sets of lights that rose into view off the aircraft's left side and then, he said, a much larger object, and that they shadowed the 747 for hundreds of miles. An Anchorage air traffic controller tracked an intermittent target near the flight, and for a short time the object was said to show on the plane's radar, the FAA's ground radar, and a military radar. Flight 1628 landed safely; the crew were debriefed and judged normal and professional. The FAA later released a large public record of the case. This case file keeps two things apart: a genuine, well-attested sighting by a professional crew, taken seriously by the FAA; and the claim it rates, that the lights were an alien or non-human craft, which remains unproven.

## The claim
That the lights and object reported by the crew of Japan Airlines Flight 1628 over Alaska on 17 November 1986 were a vehicle of extraterrestrial or otherwise non-human origin, that the object was solid and enormous, that it was independently confirmed on multiple radars, and that the true nature of the encounter has been downplayed or concealed by authorities.

## Origin and timeline
- 1986-11-17: Japan Airlines Flight 1628, a Boeing 747-200F freighter flying from Paris to Tokyo via Reykjavik and Anchorage, is cruising at 35,000 feet over eastern Alaska near Fort Yukon at about 5:10 p.m. local time. The three-man crew is Captain Kenju Terauchi, First Officer Takanori Tamefuji, and Flight Engineer Yoshio Tsukuba.
- 1986-11-17: Terauchi reports two clusters of lights that appear below and to the left of the aircraft and then rise to its altitude, pacing the 747. He describes them as moving in ways he cannot match to any conventional aircraft, and later says a far larger object, which he calls a mothership, appeared behind the plane.
- 1986-11-17: The crew contacts Anchorage Air Route Traffic Control Center. Controller Carl Henley begins working the flight and at times sees an intermittent radar return near the 747's position. For a brief period the object is said to appear on the aircraft's own weather radar as well.
- 1986-11-17: Anchorage controllers and a nearby military radar site coordinate to check the target. A United Airlines passenger jet and a US Air Force C-130 in the area are vectored toward Flight 1628 to take a look; their crews report seeing nothing unusual and no object on their own radar.
- 1986-11-17: Flight 1628 lands at Anchorage without incident after the lights depart. FAA officials interview the crew and later characterize them as normal, professional, and rational, with no evidence of drugs or alcohol. Terauchi provides written statements and hand-drawn diagrams of what he saw.
- 1986-12-29: News of the encounter breaks publicly. Wire reports, including United Press International, quote FAA spokesman Paul Steucke and note that a controller tracked an unidentified target near the flight, drawing national and international attention to the case.
- 1987-01: The FAA reviews the recorded radar data at its Technical Center in Atlantic City, New Jersey. The agency concludes it cannot confirm a second solid object and attributes the ambiguous ground return to an uncorrelated primary and beacon target, in effect a split or ghost reading generated by the 747 itself.
- 1987-03-05: At a briefing in Anchorage, the FAA releases an unusually complete public package on the case: air traffic control transcripts, crew and controller statements, a flight-path chart, and roughly 150 pages of radar printouts, while restating the split-return finding.
- 2001-05-09: Retired FAA division chief John Callahan describes, at a press event organized by the Disclosure Project, how the case was reviewed at FAA headquarters and briefed to officials he says included representatives of the CIA and others, an account that revives interest in the encounter decades later.

## The evidence, claim by claim
- Claim: The witnesses were a veteran airline crew, so their report of a solid craft should be trusted as an accurate identification.
  Evidence: The crew's credibility is real and is what makes the case serious rather than a lone roadside anecdote. Terauchi was an experienced pilot, the crew was found sober and professional, and their sincerity is not in question. But credibility establishes that the witnesses honestly reported what they perceived; it does not establish that their interpretation of distant lights at night was correct. Pilots are trained to fly aircraft, not to judge the range, size, and nature of unlit or self-luminous objects against a dark or twilight sky with no fixed reference, a task that is notoriously error-prone. A trustworthy witness to lights is not, by that fact alone, a reliable witness to a spacecraft.
- Claim: The object was independently confirmed on three radars at once, so it must have been a real, physical craft.
  Evidence: This is the strongest-sounding claim and also the most contested. The Anchorage controller did at times see an intermittent target near the flight, which is genuine and documented. But the FAA's later review at its Technical Center could not confirm a separate solid object and attributed the ground return to an uncorrelated primary and beacon target, a known radar artifact in which the aircraft's own skin paint and transponder replies produce a second, offset blip. The military radar hits were treated as clutter. So the record shows ambiguous, disputed returns, not a clean, corroborated track of a second craft. Radar that cannot be resolved into a solid object is not proof of one.
- Claim: Two other aircraft were sent to intercept and this confirms something was there.
  Evidence: It cuts the other way. A United Airlines jet and a US Air Force C-130 were directed toward Flight 1628 specifically to get an independent look, and both reported seeing nothing unusual, visually or on their own radar. If a large, luminous, solid object had been pacing the 747, the expectation would be that at least one of the two aircraft closing on the same airspace would detect it. Their negative results are a significant piece of the record and weigh against, not for, the presence of a physical craft in the position reported.
- Claim: Skeptical explanations such as bright planets have been ruled out, so no ordinary account survives.
  Evidence: This overstates the case. Aviation writer and UFO investigator Philip J. Klass argued that Jupiter, which was exceptionally bright and low on the horizon in the direction the first lights appeared, along with Mars, could account for the initial sighting, with atmospheric ice crystals and moving cloud possibly producing the flickering and apparent motion. That explanation is contested and does not obviously cover every detail Terauchi described, particularly the later large object. But contested is not refuted. A prosaic account that fits the geometry of the sky that evening remains on the table, and the fact that it has not been proven does not mean an exotic craft has been.
- Claim: The government's high-level review and secrecy show officials knew they were dealing with alien technology.
  Evidence: The FAA plainly took the case seriously, reviewed the data at its Technical Center, and briefed senior officials, and John Callahan's later account describes a meeting he says involved other agencies. But official seriousness is not an official conclusion of alien origin. The same FAA that reviewed the case also released a large public record of it and publicly attributed the radar return to a split reading of the 747, the opposite of a cover-up. Reading interest, meetings, and caution as confirmation of extraterrestrial technology adds a conclusion the record does not contain.

## Why people believe it
- The witnesses are exactly the kind people want to trust. A commercial airline captain and his crew, on the record, describing something they could not explain, carry a weight that anonymous tipsters never do. When professionals whose job is the sky say they saw something extraordinary, dismissing them out of hand feels wrong.
- The government paper trail is unusually thick and open. Rather than a flat denial, the FAA produced transcripts, interviews, and stacks of radar printouts. That volume of official material makes the case feel documented and solid in a way most sightings are not, and invites the reading that where there is this much smoke there must be fire.
- Radar is treated as objective proof. The idea that a machine, not just a human eye, registered the object is powerful, and the claim that three radars agreed sounds like independent confirmation. The technical caveat, that the ground return was later judged a split image of the plane itself, is easy to lose beneath the headline.
- The later secrecy story supercharged it. John Callahan's account of a headquarters review and a hush-hush meeting gave the case a second life and a familiar shape: ordinary people see something, and officials quietly close ranks. That narrative is satisfying and fits a template audiences already know.
- The description matches the dream. Silent lights that pace a jet, a vast mothership, technology that seems to outperform anything human: this is the picture of an alien craft people already carry, and a sincere report that seems to hand it back is far more compelling than an argument about planets and radar artifacts.

## Open questions
- What Terauchi and his crew actually saw for the better part of an hour is not fully settled. The planet-and-ice-crystal explanation is plausible and fits the sky that evening, but it has not been demonstrated to account for every reported detail, and no single prosaic cause has been established to everyone's satisfaction.
- The radar picture remains genuinely murky. The FAA's split-return finding is the official explanation, but it is a reconstruction after the fact, and the exact relationship between the controller's intermittent target, the aircraft's own radar, and the crew's visual account has never been resolved into a clean, agreed record.
- The provenance and completeness of the case files continue to be debated. Researchers who pursued the records under freedom-of-information law have said parts were hard to obtain or reportedly destroyed, which leaves room to argue about what the full documentary record would show.
- How much weight to give John Callahan's later, secondhand-in-part account of a high-level meeting is unclear. It is a striking claim from a named former official, but it rests largely on his recollection, and independent documentation of exactly who attended and what was concluded is thin.

## Sources
- Japan Air Lines Cargo Flight 1628, Wikipedia: https://en.wikipedia.org/wiki/Japan_Air_Lines_Cargo_Flight_1628
- Controller confirms UFO sighting, United Press International (1986): https://www.upi.com/Archives/1986/12/30/Controller-confirms-UFO-sighting/4431536302800/
- What Really Happened to Japan Airlines Flight 1628 in 1986?, The Debrief (2023): https://thedebrief.org/what-really-happened-to-japan-airlines-flight-1628-in-1986/
- JAL 1628: Capt. Terauchi's Marvelous 'Spaceship', Skeptical Inquirer (CSI) (2014): https://skepticalinquirer.org/wp-content/uploads/sites/29/2014/11/p19.pdf
- FAA Data Sheds New Light on JAL Pilot's UFO Report, The Skeptical Inquirer (CSICOP) (1987): https://centerforinquiry.s3.amazonaws.com/wp-content/uploads/sites/29/1987/07/22165315/p04.pdf
- FAA Japan Air Lines Flight 1628 Records, Federal Aviation Administration (via Internet Archive) (1987): https://archive.org/details/jal1628
- Records of the Federal Aviation Administration, Record Group 237 (NAID 733667), U.S. National Archives (NARA): https://catalog.archives.gov/id/733667
- UFO Case: Japanese Airlines JAL1628, November 17, 1986, The Black Vault (2019): https://www.theblackvault.com/documentarchive/ufo-case-japanese-airlines-jal1628-november-17-1986/

Rated by The Conspiratory, a neutral, sourced encyclopedia of conspiracy theories. Full page: https://theconspiratory.com/theory/jal-flight-1628