The Direction générale de l’Aviation civile (French Civil Aviation Authority) announced that multiple departures had been suspended due to a technical issue with the flight plan processing systems.
All flights were grounded for “less than 30 minutes” at the Orly and Roissy-Charles de Gaulle airports in the morning prior to a “progressive resumption” before midday, the authority said. Arrivals were not affected.
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La panne a duré moins de 30 minutes.
— dgac🇫🇷 (@DGAC) September 30, 2021
The authority blamed the delay on a fault in the system managing flight plans which emerged in the flight control centre at Athis Mons adjacent to Orly airport south of Paris.
Take-offs were affected at “all Paris airports” while the problem was fixed, a spokesman for the authority told AFP.
The map of the European Organisation for the Safety of Air Navigation, Eurocontrol, showed delays exceeding 45 minutes across swathes of central northern France following the glitch.
Departures resumed shortly before noon, according to airport authorities, but there are likely to be knock-on effects of the disruption.
Passengers flying out of either airport are advised to check with their airline.