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

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.

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.

A brief radar outage for Newark Liberty International Airport is the latest in a string of air traffic control failures tied to aging infrastructure.

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

Audio transmissions captured air traffic controllers alerting at least two incoming planes that the radar screens had gone dark.

On Wednesday, Newark led the nation with 42 canceled departures and 46 canceled arrivals, according to FlightAware.com. That’s even after United cut 35 daily flights at the airport starting last weekend.

Radar screens that monitor Newark Liberty International Airport in New Jersey went completely black for about 90 seconds early Friday morning, according to a new report from ABC News. The outage comes after an identical problem last week when air traffic control screens for the same airport went dark for about 60-90 seconds.

Newark Liberty International Airport in New Jersey has been dealing with nonstop delays and flight cancellations due to outdated equipment and air traffic control understaffing across the U.S.

Travel woes at Newark Airport continued Monday after a weekend featuring another radar outage, a ground stop and dozens of flight cancellations and delays. The FAA announced Newark was operating on a ground delay program,