27th Fighter-Escort Wing History, 1952: A UFO Report From Northern Japan
A SAC fighter wing on rotation in Japan notes an unidentified flying object sighted in northern Japan on 29 December 1952, and the 'hurried and tedious hours' its intelligence section spent on the paperwork.
On the night of 29 December 1952, something unidentified was seen in the sky over northern Japan, and an American fighter wing’s intelligence section spent the last days of the year typing up reports about it. The wing’s monthly history records that the sighting happened and what it cost in paperwork. It does not say what was seen.
What this record is
This is the history of the 27th Fighter-Escort Wing for 1 to 31 December 1952, 120 pages in the PDF. The cover and transmittal letter name the wing’s home station as Bergstrom Air Force Base, Austin, Texas. That month, however, the wing was deployed as the Strategic Air Command rotational fighter-escort wing at Misawa Air Base in northern Japan, under the operational direction of the 39th Air Division (Defense) (pages 9 to 11 of the PDF). Its chronology also mentions a minor accident at Chitose Air Base in Hokkaido and planning for the wing’s return to Bergstrom. The history was prepared by Second Lieutenant William C. Haverlah and signed by the wing commander, Colonel Donald J. M. Blakeslee (page 3 of the PDF). It was classified SECRET and was declassified in full by the Air Force Declassification Office on 8 May 2025 as case 342UAP00011. Most of it covers air defense exercises, re-equipment and personnel.
What it says about UFOs
Two pages mention the sighting.
The December chronology (page 7 of the PDF) lists two entries for the 29th. The wing took part in a large-scale air defense exercise, and an “Unidentified flying object” was “sighted in the Northern Area of Japan.” The history does not say whether the two were connected.
The intelligence section’s report (page 41 of the PDF) adds a little more: “The sighting of an unidentified object on the night of 29 December brought about hurried and tedious hours of preparation of required flying objects reports and AF Forms 112.” By the end of the month the Forms 112, the Air Force’s standard intelligence information reports, were “in the process of final typing for forwarding to the interested agencies.”
That is the whole account. The history does not say who saw the object, whether they were pilots, ground observers or radar operators, what it looked like, how long it was seen, or whether aircraft were sent after it. The reports it mentions were separate documents sent to other agencies, and they are not bound into this history.
Context
The reporting rules in force in December 1952 required units to send UFO reports by electrical message and follow them with written reports to the Air Technical Intelligence Center, where Project Blue Book evaluated them. The “hurried and tedious hours” reflect that obligation. Blue Book had been swamped during the 1952 wave, and Japan produced a number of military reports that year. Blue Book’s case files for December 1952 are the natural place to look for the forms this history describes. The program’s history is covered in the Project Blue Book overview, and the collection this record comes from in the Record Group 615 overview.
Status
The record establishes a date, a region and the fact that the wing treated the sighting seriously enough to file formal reports. It does not establish what was seen or what Blue Book concluded. Any claim linking this entry to a particular published case would need to be checked against the Blue Book files, because this history supplies no details to match against.