(Reuters) - Dozens of aircraft briefly vanished from air-traffic control radars in Austria, Germany, the Czech Republic and Slovakia this week and last in separate incidents that Slovak authorities blamed on military electronic warfare exercises.
Air-traffic controllers in Austria and Germany said data about the planes' position, direction, height or speed went missing on June 5 and June 10, but the outages posed no serious danger to people on the aircraft travelling at high altitude.
Their Czech and Slovak counterparts also encountered cases of vanishing aircraft on the same days.
"The disappearance of objects on radar screens was connected with a planned military exercise which took place in various parts of Europe on June 5 and 10 and whose goal was the interruption of radiocommunication frequencies," the Slovak state Air Traffic Services company said in a statement .... http://www.reuters.com
