Silent UFO seen in Yvelines in 1991

Summary

In July 1991, a witness in Yvelines observed a very bright white phenomenon that looked like a small private aircraft. The object was silent and remained visible for about 15 seconds. Despite its apparent simplicity, this case remains classified as unidentified by the GEIPAN. No further details about the witness or the exact circumstances of the sighting are available. These brief and silent observations are common in UFO files and often raise more questions than answers.