BBC: Thousands stranded across Europe as Greece airspace disrupted
"...Thousands of passengers are stranded across Europe after a communications failure forced Greece to close its airspace, causing widespread cancellations and delays.
Officials are working to understand why radio communications were disrupted on Sunday morning, prompting the temporary suspension of arrivals and departures....:"
"....The issue that caused the disruption is thought to concern the radio system used by air traffic controllers to communicate with planes in their airspace.
Panagiotis Psarros, chair of the Association of Greek Air Traffic Controllers, told ERT that all frequencies were "suddenly lost", adding: "We could not communicate with aircraft in the sky."
The broadcaster later reported than an initial investigation by the Greek security services suggested the problem may be due to the failure of an antenna in the Gerania Mountains near Athens. ..."
