The article below was published in the daily newspaper Le Nouveau Nord Maritime, France, page 9, on October 21, 1954.
See the case file.
Vienne (Isère), 20. -- A "Stratojet" plane which, each day, flies over the valley of the Rhone at an altitude of approximately ten thousand meters, was mistaken Tuesday, by certain people, for a flying saucer.
The president instructor of the Aero club of Vienne dissuaded the too imaginative witnesses at once, but a strange phenomenon occurred at once after the passage of the powerful jet. It formed, indeed, in the sky, sorts of parachuts animated of odd movements and having the aspect of light veils which soon reached the ground.
The witnesses of the phenomenon seized this matter, very soft at touching, and having a little the consistency of rubber. While arriving on the ground, this one volatilized, probably under the influence of the temperature.
One of the witnesses put a little of the substance in a box and had it photograph at once. A few hours afterwards, what remained in this box, however sealed, had evaporated.
This phenomenon due to condensation in the rarefied and cold atmosphere, of certain elements of the fuel of the "Stratojet", can cause white or irrized formations moving at high speed at great altitude and thus giving place to more or less whimsical interpretations.
This observation made above the aerodrome of Vienne is identical to that already reported in its time [1952] by a resident of Oloron.