Europe's Skies in Chaos: What Went Wrong?

Europe is facing a travel nightmare. A major breakdown in radio communications has left thousands of people stuck. Greece had to shut down its airspace. This caused many flights to be canceled or delayed. The problem started on Sunday morning. Officials are still trying to figure out why the radio systems failed. This failure stopped planes from taking off or landing. Athens' main airport is one of the worst hit places. Thessaloniki airport is completely closed. Many people are worried about getting home before the workweek starts. One traveler said they were supposed to fly to London. But now, they don't know when they will leave. They also don't know who will pay for the extra costs.Over 90 flights in and out of Athens have been affected. Some flights are slowly starting again. But incoming flights are still being told to turn around or go elsewhere. Flights from Dublin, Barcelona, and Paris were told to return to their starting points. Services from Copenhagen and Malta were canceled. Passengers are frustrated because they are not getting any updates. One person said they were told they could leave. But they don't believe it. Another traveler said they had no information after their flight turned back. Some people might be able to take the train. But that would take much longer. The issue seems to be with the radio system used by air traffic controllers. They lost all communication with planes in the sky. An initial investigation suggests the problem might be due to a failed antenna. Italy, Turkey, and Cyprus are helping Greece manage the situation. This is a busy time for travel, with many people returning from winter holidays.