FAA has determined that the source of a major ATC glitch this morning was a relatively new telecommunications system, and lawmakers are calling for an investigation. The problem occurred at about 5 a.m. EST, when some systems – including flight data processing – went offline. The problem was fixed by 9 a.m., but it caused hundreds of delays and cancelations across the country. Surveillance and communications were not affected. Initially, some lawmakers and media outlets blamed the ...

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