January 5, 2026
A radio communication failure in Greece on 04 January caused widespread flight disruptions and left thousands of passengers stranded across Europe. Some flights were allowed to depart from Greek airports, but inbound flights were asked to divert or return to their point of origin. The issue affected the radio system used by air traffic controllers to communicate with planes in the airspace. An investigation into the cause is ongoing, with initial reports suggesting a potential failure of an antenna in the Gerania Mountains near Athens.