Conflans-Sainte-Honorine, luminous sphere with fan-like sound

Summary

In April 1980, several witnesses in Conflans-Sainte-Honorine saw a luminous sphere that remained stationary for twenty minutes before drifting slowly westward while emitting a fan-like sound. The observation lasted nearly an hour. A light helicopter was considered as a possible explanation but could not be verified. With no additional testimonies or confirmations, the case was classified as C due to insufficient information.