Air traffic control calamity disrupting hundreds of US flights spotlights the aging systemCommunications failures that snarled U.S. air traffic Monday highlight the aging systems controllers rely on to guide roughly 45,000 flights a day. Congress handed the Federal Aviation Administration $12.5 billion last year to overhaul technology after the deadliest American plane crash in more than two decades happened in January. The same Philadelphia…The Atlanta Journal-Constitution13d agoWhole story →BuildTechnologyair traffic control disruptions