因通信故障，希腊全境航班起降受影响

Core Viewpoint - A significant communication failure in Greece's air traffic control system led to the suspension of all flights across the country's airports, stranding thousands of passengers [1] Group 1: Incident Overview - The communication failure began on January 4 at 9:35 AM local time, resulting in the grounding of flights and significant passenger disruption [1] - Initial reports indicate that the failure was due to a circuit malfunction in the central radio frequency system of the Hellenic Civil Aviation Authority [1] - The situation has shown signs of improvement, with some flights beginning to resume based on air traffic system capacity, although the issue has not been fully resolved [1] Group 2: Impact on Flights - The failure caused some flights to divert to nearby countries, while others were delayed or canceled [1] - Approximately 90 flights at Athens International Airport and around 75 flights at Thessaloniki Airport were affected, with dozens of additional flights impacted at other airports nationwide [1] Group 3: Investigation and Response - The Greek authorities are conducting an investigation into the cause of the communication failure and are working on repairs to restore normal flight operations [1] - The National Cyber Security Authority of Greece has reported no signs of a cyber attack on the communication system [1]