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ACUFO:

ACUFO is my comprehensive catalog of cases of encounters between aircraft and UFOs, whether they are “explained” or “unexplained”.

The ACUFO catalog is made of case files with a case number, summary, quantitative information (date, location, number of witnesses...), classifications, all sources mentioning the case with their references, a discussion of the case in order to evaluate its causes, and a history of the changes made to the file.

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Japan, China or the Pacific, between 1937 and 1945:

Case number:

ACUFO-1940-00-00-JAPAN-6

Summary:

In the years 2000 - 2020, the image below is distributed on the Web, most often without any explanation but as an illustration of articles on the “Foo-Fighters” of the Second World War, sometimes with the mention that it comes from Japan, sometimes with doubts about its authenticity or the nature of what it shows:

Scan.

To me, theses “UFOs” are merely liquid stains on the photo paper at development, with someone having tried to wip them out.

Data:

Temporal data:

Date: Between 1967 and 1945
Time: Day.
Duration: ?
First known report date: The 1970's
Reporting delay: Immediate, decades.

Geographical data:

Country:
State/Department:
City or place: Japan, or China, or the Pacific.

Witnesses data:

Number of alleged witnesses: ?
Number of known witnesses: 0
Number of named witnesses: 0

Ufology data:

Reporting channel: The Web.
Visibility conditions: Day.
UFO observed: ?
UFO arrival observed: ?
UFO departure observed: ?
UFO action: ?
Witnesses action: ?
Photographs: Yes.
Sketch(s) by witness(es): No.
Sketch(es) approved by witness(es): No.
Witness(es) feelings: ?
Witnesses interpretation: ?

Classifications:

Sensors: [ ] Visual:
[ ] Airborne radar:
[ ] Directional ground radar:
[ ] Height finder ground radar:
[X] Photo: 1.
[ ] Film/video:
[ ] EM Effects:
[ ] Failures:
[ ] Damages:
Hynek: DD
Armed / unarmed: Armed, 2 7,7 mm machine guns.
Reliability 1-3: 1
Strangeness 1-3: 1
ACUFO: Stains on photograph.

Sources:

[Ref. www1:] ON THE WEB:

Scan.

The photo never has any relevant caption; it appears on the Web in the 2010 - 2020, mostly on social networks, with titles claiming it is a photo of “Foo-Fighters”.

One publication has the silly caption: “Many US Pilots mentioned Foo Fighters in their Books on World War II”.

[Ref. gfn1:] WEBSITE "GREY FALCON":

Scan.

The photo caption ready:

This photo is of a World War II Japanese fighter, perhaps an early version of the Zero, with non retractable landing gear. The photo has been in public view since the 1960's. The dots behind the plane are supposed UFOs.

[Ref. gfz1:] GILLES FERNANDEZ:

Scan.

Note that some of the formats of these photographs are “bastard” (that is to say, they are not standard photographic formats). Possible cropping could therefore have been carried out in order to make the expected effect (consciously or not) on the original photos more stunning.

For example, the seventh photo seems interesting, but it is clear that it is not an original, since an “arrow” has been added (the black dots too?). I would be curious to have the original, to know if it was cropped or not, because, as suggested elsewhere, it could be aircraft in combat or navigation formation (“black dots”) with their trails of condensation. It's a shame not to be able to see or know (whether the photo was cropped or not) whether or not the plane in the foreground was producing a trail. In fact, this hypothesis was not the right one, see below.

[Photo.]

Yes, contrary to popular belief, aircraft with atmospheric engines like those of WWII can also produce trails of condensation or smoke like modern “jets” (with jet engines).

Scan.

Added 01/24/2015:

In fact, this hypothesis of planes in formation and their trails is not the correct one.

Following the publication of this article, Wim van Utrecht contacted me regarding this photo. He provides me with the “color” photo gleaned from the documents that Marc Hallet made available to him, without however remembering where it came from (probably from a magazine or book more than twenty years ago). We can clearly see that there is a “ball” in front of the plane with a trail, so it cannot be planes in formation with their condensation trails:

[Photo.]

With this scan, another capture was attached to me, the source of which is FRITSCHE, Kurt, Das grosse Foto Fehler Buch, VEB Fotokinoverslag, Leipzig, Germany, 1969, p. 114. and it is caused by a well-identified photographic defect:

[Photo.]

Marks from the film feed device on the negative strip (due, for example, to malfunction when manually rewinding the silver film).

Note that this is a negative: in positive, the balls[s] would be “black” and the “trails” would be “white” as in our photograph of “foo-fighters” (and the following), except the second on the right, where the “trails” would be “black” like “the balls”. This defect is attributable to holes in the negative, and the resulting streaks (developer surging through the holes). This type of defect is commonly called surge marks. The similarity with the “objects” in the “foo-fighter” photo is disturbing, even obvious...

Aircraft information:

The plane on the image is not “perhaps an early version of the Zero” as per [gfn1], but a Nakajima Ki-27 “Type 97” fighter, Allied nickname was “Nate” (photo below). It was the main fighter aircraft used by the Imperial Japanese Army Air Service up until 1940. It operated mainly on the China, Mongolia, Burma and India theaters.

Scan.

The first flight was in October 1936, it went into service in 1937. Though obsolete at the end of WWII, its was still used as modern japanese fighters numbers were shrinking.

It was normally armed of 2 7.7 mm Type 89 machine guns, and on later versions with 2 12.7 mm Ho-103 machine guns.

Discussion:

It was not absurd a priori to consider that the so-called “UFOs” in this image were traces of a negative drive mechanism.

But I do not think this is the right explanation because the distance between the supposed marks is not constant.

First, counting the pixels on a magnified copy, I observe that the distance between trace 1 and 2 appears as half the distance between trace 2 and trace 3 - from top to bottom.

There is also an offset of the axes between traces 1 and 2 and traces 3 and 4. There is also the fact that it is trace 3 which is the least marked whereas since there was 4 traces, the contact would have been least marked on traces 1 and/or 4, at the ends of the contact.

As happened for other UFO photos (example), I rather think that the 4 traces occurred not on the negative but on the photo paper just after the developing bath. Out of the bath, the paper would have received four drops of some liquid. The streaks are simply due to an attempt to wipe away these drops, resulting in fading of the coloring from the photo, showing the white background of the paper, this before the fixing bath.

“Surge marks” is not the appropriate terminology: this refers to over-agitation of the film by the developer so that the bromide “surges” through the sprocket holes of the film, and cause “lines” starting at the sprocket holes. Of course, they are always at the edges of the film where the sprocket holes are located, never in the middle of the image. Example below:

Scan.

As with the other photos of alleged “foo-fighters” near Japanese WWII planes, it seems likely that this too came from a publication by a Japanese group of UFO and aliens buffs, the “Cosmic Brotherhood Association” (C.B.A).

According to the American ufologist Jan Aldrich, a Japanese ufologist familiar with these photos, Jun-Tchi Takanashi, indicated that all the photographs of “Foo-fighters” of the C.B.A. were “false”, “without origin or pedigree.”

Evaluation:

Stains on photograph.

Sources references:

* = Source is available to me.
? = Source I am told about but could not get so far. Help needed.

File history:

Authoring:

Main author: Patrick Gross
Contributors: None
Reviewers: None
Editor: Patrick Gross

Changes history:

Version: Create/changed by: Date: Description:
0.1 Patrick Gross April 21, 2024 Creation, [www1], [gfn1], [gfz1].
1.0 Patrick Gross April 21, 2024 First published.

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This page was last updated on April 21, 2024.