An account in Seine-Saint-Denis, France

A witness regularly observes from their home the movement of a bright point in the sky. This point grows larger then shrinks before disappearing at the horizon. The witness is almost in line with one of the runways of Orly airport. In a north wind, planes take off facing the witness. The front lights of planes are very directional and very powerful, and the witness cannot distinguish the red blinking lights, which are much less powerful. When the plane deviates from the line of sight, the light received by the witness decreases sharply. The repetitiveness of the observation supports this hypothesis; the witness could verify that this happens in a north wind. GEIPAN classifies this case as "B": probable observation of planes taking off from Orly.