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

The air traffic controllers directing planes into the Newark, New Jersey, airport lost their radar Friday morning for the second time in two weeks.

The failure was the second such incident in the past two weeks, amid continuing concerns over safety at the airport.

Radar screens at New Jersey's Newark Liberty International Airport went black again early Friday morning. The outage happened at 3:55 a.m. and lasted about 90 seconds, the Federal Aviation Administration said.

The air traffic control mishap early Friday morning added to disruptions in recent days that have intensified concerns about safety at one of the busiest U.S. airports.

Newark Liberty International Airport suffered another brief air traffic control outage Friday morning, the FAA confirms.

Staff shortages and equipment failures at Newark Liberty International Airport have raised safety concerns in recent weeks.

"It is safe across the country and the back up procedures keep it safe," United CEO Scott Kirby said on Tuesday