Overview
- The Hellenic Civil Aviation Authority reported a breakdown of central radio and inter-controller communications affecting the Athens and Macedonia sectors.
- Greek airspace appeared nearly empty on Flightradar24 as arrivals and departures were halted and overflights were rerouted.
- By midday local time, initial takeoffs and landings resumed using alternative frequencies, with no estimate for full restoration.
- Authorities said they are working with telecom provider Cosmote to fix the outage, and union officials rejected a cyberattack as the cause.
- Ripple effects hit European airports, with cancellations and heavy delays reported, including Aegean’s Düsseldorf–Athens service.