Bright rectangular shape near Orly airport

Summary

On 28 August 1979, a witness in Bonneuil-sur-Marne was tracking an airliner through binoculars when he noticed a very bright rectangular shape behind and above the aircraft. The description is brief and lacks further detail. Neither the authorities near Orly airport nor regional air-traffic control provided additional information.

Classified "C" by GEIPAN, the case has no conventional explanation. The use of binoculars lends some visual precision to the testimony, but the absence of confirmation from air-traffic controllers or gendarmes prevents a more robust assessment.