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The 1954 French flap:

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October 18, 1954, Boulogne-Billancourt, Hauts-de-Seine:

Reference for this case: 18-Oct-54-Boulogne-Billancourt.
Please cite this reference in any correspondence with me regarding this case.


In the 2000s, two foreign ufology databases on the Web, generally unreliable, indicate that there was a UFO sighting on October 18, 1954, at 3 p.m., in Boulogne-Billancourt. One of the two sources refers to an "object" that would have had "an appearance and behavior that most likely would have a conventional explanation", and a duration of 45 minutes.


[Ref. uda1:] "UFODNA" WEBSITE:

The website indicates that on 18 October 1954 at 15:00 in "Boulogne.Billanc, France", "An unidentified object was sighted, but with appearance and behavior that most likely would have a conventional explanation. One object was observed for 45 minutes."

The source is indicated as Vallee, Jacques, Computerized Catalog (N = 3073).

  • [ubk1] Online database UFO-Datenbank, Germany, found in 2016, at
  • [Ref. ubk1:] "UFO-DATENBANK":

    Case Nr. New case Nr. Investigator Date of observation Zip Place of observation Country of observation Hour of observation Classification Comments Identification
    19541018 18.10.1954 Boulogne Billanc [sic] France 15.00



    Totally insufficient data, probable misinterpretation.


    (These keywords are only to help queries and are not implying anything.)

    Boulogne-Billancourt, Hauts-de-Seine, daytime


    [----] indicates sources that are not yet available to me.

    Document history:

    Version: Created/Changed by: Date: Change Description:
    1.0 Patrick Gross June 9, 2009 First published.
    1.1 Patrick Gross March 6, 2017 First published.
    1.2 Patrick Gross January 21, 2019 Addition of the Summary. Explanations changed, were "Not looked for yet."

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    This page was last updated on January 21, 2019.