The Federal Aviation Administration halted all flight departures nationwide Friday afternoon due to a “rolling frequency outage” affecting facilities that monitor planes in the air.
The cause remained unclear Friday, and Homeland Security Secretary Markwayne Mullin said Friday evening that investigators were looking into it, but suggested that a telecommunications issue caused the disruption.
Recommended Stories
Print subscriber? Click here to login/register your account
Digital subscriber? Click here to login/register your account.