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.

At times Monday evening, as few as three air traffic controllers per hour were lined up to monitor via radar the planes flying into and out of the airport, the Federal Aviation Administration said.

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

Blank radar screens. Broken air traffic equipment. Flights in an out of Newark Airport delayed or canceled. Is it safe to fly here?

The blackout included losing radar for about 90 seconds at Newark Terminal Radar Approach Control at 3:55 a.m. local time, a source with knowledge of the incident tells CNN.

The city of Newark will install radar detection equipment at a downtown intersection later this year to boost traffic efficiency and safety.

After tech interruptions coinciding with scheduled construction, CEO of United Airlines assures the public that there is a set date for Newark airport to return to reliability

We have to fix this, because what you see in Newark will happen in other places across the country,” a top federal official said.