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The 1954 French flap:

The index page for the 1954 French flap section of this website is here.

August 12, 1954, Précy-sous-Thil, Côte-d'Or:

Reference number for this case: 12-Aug-54-Précy-sous-Thil. Thank you for including this reference number in any correspondence with me regarding this case.



Jacques Vallée indicates that on August 12, 1954, in "Précy-sur-Thil" in the department of Côte-d'Or, a shining object moving by jerks and letting a trail appeared.

[Ref. lg1:] LOREN GROSS:

UFO researcher/author Jacques Vallee noted a marked increase in French activity as early as August 11th when reports came in from eastern France at the towns of Serezin, Remiremont, and Gerardmer. And on the 12th,an object spewing a smoke trail and flying with a jerky motion was visible above Precy-sur-Thil. 195.

  • 195. Vallee, Jacques and Janine. Challenge to Science. New York, N.Y.: Ace Books, Inc., 1966. p.15O.

[Ref. ud1:] "UFODNA" WEBSITE:

The website indicates that on 12 August 1954 at 16:30 in Precy-sous-Thil, France, "Shiny UFO moves in sudden jerks. Leaves vapor trail."

And: "An unidentified object was sighted, but with appearance and behavior that most likely would have a conventional explanation. One shiny disc was observed by three witnesses for five minutes."

The sources are indicated as Vallee, Jacques, Computerized Catalog (N = 3073); Vallee, Jacques, Challenge to Science: The UFO Enigma, Henry Regnery, Chicago, 1966; Hatch, Larry, *U* computer database, Author, Redwood City, 2002.

[Ref. ub1:] "UFO-DATENBANK":

This database recorded the case twice:

Case Nr. New case Nr. Investigator Date of observation Zip Place of observation Country of observation Hour of observation Classification Comments Identification
19540812 12.08.1954 Precy Thil France Tagsüber DD
19540812 12.08.1954 Precy Thil France 16.30


Not looked for yet. Plane? Distorted meteor report?

Jacques Vallée writes "Précy-sur-Thil" but it is Précy-sous-Thil. The hour given by [ud1] is likely completely invented.


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

Précy-sous-Thil, Côte-d'Or, trail, tail, shining, jerks, moving, object


[---] indicates sources which I have not yet checked.

Document history:

Version: Created/Changed by: Date: Change Description:
0.1 Patrick Gross October 17, 2007 First published.
1.0 Patrick Gross March 18, 2010 Conversion from HTML to XHTML Strict. First formal version.
1.1 Patrick Gross March 20, 2010 Additions [ud1].
1.1 Patrick Gross November 20, 2016 Additions [lg1], [ub1].

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This page was last updated on November 20, 2016.