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Radio frequency failures cause flight cancellations in Greece, leaving thousands stranded

Flights in Greece were grounded Sunday after a 'collapse of radio frequency crippled the air traffic communication. This left thousands of travellers stranded and brought airport operations to an end.

The cause of the disruption was not clear. It began early on Sunday morning and rapidly escalated. The civil aviation authority of Greece said that some overflights in Greek and regional airspace are still being serviced. However, airport operations have been restricted for safety purposes.

Dozens were affected. Panagiotis Psarros of the Association of Greek Air Traffic Controllers told ERT that "for some reason, all frequencies were suddenly gone.. we couldn't communicate with aircraft in flight."

He stated that the problem appeared to be the 'collapse of the central radio frequency systems? at the Athens-Macedonia area control system, the largest aircontrol facility in the nation based in Athens. It monitors Athens Flight Information Region - a vast area of airspace controlled by Greek authorities.

Flight tracking showed that the Greek airspace is largely empty. ERT reported that airport 'arrivals and departs' were suspended at 9 a.m. (0700 GMT) local time, reporting from a departures hall at Athens Eleftherios Venizelos Airport?crowded with travelers.

"We've not been told the cause of the problem... the equipment we have is almost ancient." Psarros stated that they had raised the issue many times before.

An official from the Transport Ministry told us that some aircraft headed north or east were allowed to depart. An official reported that more than 75 flights had been delayed.

A spokesperson for the Israel Airports Authority said that Greek airspace was closed until 4:00 pm local time (1400 GMT). The spokesperson warned travellers to expect delays on arrivals and departures. (Reporting and editing by Hugh Lawson, Ros Russell and Hugh Lawson; Additional reporting in Israel by Steven Scheer and Renee Maltezou;

(source: Reuters)