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,

Over the past two weeks, several equipment outages at the Philadelphia-based air traffic control center that guides planes to and from Newark Liberty International Airport, have raised questions on just how safe it is to fly at one of the nation’s busiest airports.

Transportation Secretary Sean Duffy said Newark Liberty International Airport would reduce flights for several weeks after delays and equipment issues.

Tech chaos at Newark Liberty airport saw a spike in cancellations and delays in recent weeks, disrupting one of the busiest airports in the United States.