Duffy laid out an extensive plan to replace the nation’s outdated air traffic control system last week, including installing 4,600 new high-speed data connections and replacing 618 radars, but didn’t put a price tag on the plan other than to say it will cost billions.

The nation's aviation infrastructure is again under scrutiny, following a series of paralyzing communications and radar outages at some of the country's busiest airports. Here is a look at the scientific origins of radar.

The Federal Aviation Administration is considering temporary flight reductions in and out of Newark Liberty International Airport, and it's launching a safety task force.

Transportation Secretary Sean Duffy plans to reduce the number of flights in and out of Newark Liberty International Airport for the "next several weeks."

Airlines will meet with the Federal Aviation Administration Wednesday to address weeks of delays at Newark Liberty International Airport following air traffic control staffing and equipment issues.