Sighting in Lyon, May 25, 1979

Shortly after one in the morning, two police officers on duty noticed a moving light in the sky that caught their attention. Flying low, four oval lights, white with a yellowish tinge, gradually passed over them and then changed direction. The witnesses could not say whether the lights belonged to a single object or were separate phenomena. They heard a faint droning sound before the phenomenon vanished toward the southeast, hidden by the landscape. No interference was noticed on their on-board equipment.

According to GEIPAN, the witnesses' description and the presence of several airfields nearby, in addition to Lyon-Satolas, make it quite likely that the two officers had seen an aircraft on approach. The case was classified B, probably identified.