Here’s how the FAA says NOTAM caused widespread flight disruptions

AP: The Federal Aviation Administration computer system that compiles and distributes essential safety information for pilots went kaput. That temporarily grounded all flights nationwide and touched off a cascading air traffic jam that will take at least a day to unclog. More than 1,300 flights were canceled and 9,000 delayed by early evening on the East Coast because of the outage, according to flight-tracking website FlightAware.