Operations at United Airline's massive hub at Newark Liberty International airport have stabilised following a sharp reduction in daily air traffic mandated by the Federal Aviation Administration.

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

A failed backup telecommunications line led to a 90-second radar and radio outage last month that left air traffic controllers unable to see jetliners heading into Newark airport.After the primary connection that carries radar data into the Philadelphia facility where controllers guide planes into the busy hub failed,

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

Transportation Secretary Sean Duffy says a new software update prevented a third radar outage over the last two weeks at New Jersey's busy Newark airport when a telecommunications line failed again over the weekend.

Newark approach lost radar and comms with at least 16 commercial jets. Many circled in oval loops before landing elsewhere. A CNN data analysis reveals the ripple effects from the outage.

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

On Monday evening, there were as few as three air traffic controllers at a Philadelphia radar center scheduled each hour to guide planes that were flying into and out of Newark Liberty ...