Friday's Nationwide Ground Stop Began With a Telecommunications Outage. The FAA's Own Estimate Puts Its Telecom Rebuild $1.16 Billion Short.
The Federal Aviation Administration halted departures at every U.S. airport from 3:54 p.m. to 8:15 p.m. Eastern time on Friday, 13 November, after what it called a temporary telecommunications outage at several air route traffic control centres. Thousands of flights were cancelled and delays ran into the weekend. The cause has not been fully explained.

