Foia Release
Unclassified Complete
733667-001-003-0003
National Archives and Records Administration
Confidence
85%
Credibility
80%
View original document ↗ hosted at the official government source
Intelligence summary
The document discusses a UFO sighting by the crew of Japan Airlines Flight 1628 on November 17, 1986, which was corroborated by radar data. The crew reported seeing strange lights, which were later analyzed and attributed to various factors, including the planet Jupiter and atmospheric conditions.
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Locations referenced
| Location | Context | Confidence | Supporting text |
|---|---|---|---|
| Elmendorf AFB | Incident Location | Unresolved | …that was UFO sighting by pilot confirmed by radar — reports strange lights. Airliner Crew oer ary bas oon ew Bt u pan rere é cated a TH. OT pttete As be . 1 a |
Extracted timeline
Jun 16, 2026
Ingestion Date
Ingestion Date for 733667-001-003-0003
Jun 16, 2026
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Document Record Date for 733667-001-003-0003
Jun 16, 2026
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Update Date for 733667-001-003-0003
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Full document text
6,545 characters, transcribed via OCR. Errors reflect the source scan. Compare with the original ↗
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on radar screens
— A vente Pt
pisws — (FN en reaee rvess
locate the JAL airliner. The United crew,
looking ahead and to its left, readily
spotted JAL, silhouetted against a still
faintly light sky, but could not see any
juminous object in its vicinity. Shortly
before the two aircraft passed, Terauchi
was asked again to give the UFO's posi-
tion, and he reported that it was “just
ahead of United”—which would place the
bright light to the southeast. Despite the
fact that the bright light seemed to
Terauchi to be directly ahead of the
United jetliner, its crew saw nothing.
In the southeasterly direction, where
Terauchi was then looking, was the very
bright (-2.6 magnitude) planet Jupiter,
which was low in the sky (about 12
degrees) at an azimuth of about 143
degrees relative to true north. From
Terauchi’s vantage point, Jupiter would
appear to be just ahead of United #69.
But the bright planet would have been
‘ar to the right of United’s flight path,
and its crew would have been looking to
heir left at JAL #1628. Never once did
Terauchi report the “UFO's” position
relative to a “‘very bright star,” i.e.,
Jupiter.
Also in the area at the time was a
USAF C-130 transport aircraft that was
UFO sighting by pilot confirmed by radar
— reports strange lights.
Airliner Crew oer
ary bas oon ew Bt
u
pan rere é
cated a TH. OT pttete As be
. 1 a ar iees boas, tm BS |
== UFO sighting
“| reported by
|| JAL jet crew
westbound for Elmendorf AFB, flying
south of JAL #1628. When the C-130
pilot overheard the FAA communications
with JAL, he too offered to try to spot
the reported UFO when the USAF air-
craft passed near the 747. The USAF
crew readily spotted the JAL 747 but
reported seeing no other object in its
vicinity. The C-130 crew would not have
noticed Jupiter, which was to their far
left, because they were looking at the JAL
747 to their right.
While it is commendable that the
FAA’s Alaskan Region decided to con-
duct tape-recorded interviews with the
three JAL crew members in early Janu-
ary, following inquiries by Japanese news
media in late December, in retrospect it
is regrettable that the FAA did not think
to tape-record discussions with the crew
immediately after flight #1628 landed in
Anchorage on November 17, when recol-
lections were still fresh. However, when
crew members were interviewed separ-
ately in January, some significant differ-
ences emerged, providing useful insights.
For example, it now appears that the
November 17 incident involved two dif-
ferent “types of UFOs,” or trigger-
mechanisms. As described by flight —
engineer Yoshio Tsukuba (through an
interpreter) during his January 15 inter-
view with FAA officials, the initial UFO
was observed for about five to ten
minutes at roughly an II o'clock position
before it disappeared. This is confirmed
by the FAA radio communications tran-
script, which shows the pilot reported
the UFO disappearance at 0223:13 GMT,
roughly four minutes after it was first
reported. Crew members had been ob-
serving it for several minutes prior to the
initial report.
The second UFO, which Tsukuba
characterized as “absolutely different”
was visible much further to the left (“nine
o'clock") for about 30 or 40 minutes.
Tsukuba described the initial UFO as a
“cluster of lights .. . undulating,” which
were “different from town lights.” Unlike
the pilot, Tsukuba said he was unable to
describe any particular shape for either
UFO. The flight engineer said that, when
he was first interviewed by the FAA
immediately following the incident, he
“was not sure whether the object was a
UFO or not. My mind has not changed
since then.”
During FAA interviews in January,
copilot Takanori Tamefuji, who was fly-
ing the 747 at the time of the initial sight-
ing, confirmed the flight engineer's recol-
lections that the UFO first sighted was
“completely different” from the one later
seen further to the left. Tamefuji
described what at first appeared to be
“two small aircraft” slightly below his
own altitude. When the copilot was asked
if he could distinguish these lights “as
being different” from a star, he replied:
“No.” (The planet Mars would have been
visible to the crew about 19 degrees to
the right of Jupiter, but it would not
have been nearly as bright.)
When a sketch made by Captain
Terauchi, showing a giant walnut-shaped
UFO, was shown to the copilot and he
was asked if this was what he had seen,
he replied: “I don't see anything like this
but... if we can connect these lights it
(would) be a big object, but ah..."
There are a number of ambiguities in
the report that Captain Terauchi sub-
mitted to the FAA on January 2, and in
his subsequent interview with an FAA
representative, despite the presence of an
interpreter. Terauchi generally character-
ized the initial amber-white lights as re-
sembling the exhaust of jet or rocket
engines. In his report, written in Japanese
and later translated, Terauchi said that a
few minutes after first observing the lights
ahead and to the left, “most unexpectedly
two spaceships stopped in front of our
face, shooting off lights. The inside cock-
pit shined [sic] brightly and | felt warm
in the face.” Neither of the other crew
members reported such effects.
All three crew members agreed that
the 747'’s weather radar displayed an echo
at a bearing that roughly corresponded
to that of the initial lights at a range of
about eight miles. The radar display uses
color to show the strength of the echo to
alert the crew to the potential intensity
of thunderstorm turbulence ahead. A
red-colored echo indicates an especially
strong radar echo and a green color
shows the weakest. All three crew mem-
bers agree that the “UFO blip” was green.
This is especially curious if the visual
UFO was a giant craft only a few miles
ahead, which should have produced an
extremely strong (red) return. Flight
engineer Tsukuba characterized it as “not
a dot, but streamlike.” This is confirmed
by a sketch drawn by the pilot after land-
ing on November 17, It suggests that the
green “blip/stream” was an echo from
thin clouds of ice crystals—like those that
prompted Terauchi to mistake village
lights for UFOs on January I1.
On the night of November 17, there
was a nearly full moon that would have
been approximately 12 degrees above the
horizon at the time of the initial UFO
sighting and almost directly behind the
JAL 747’s direction of flight. This raises
the possibility that bright moonlight re-
flecting off turbulent clouds of ice crystals