U.S. Transportation Secretary Sean Duffy is considering flight reductions at Newark Airport to reduce travel disruptions caused by a recent radar outage and ongoing air traffic control issues.

Transportation Secretary Sean Duffy plans to reduce the number of flights in and out of the Newark airport for the “next several weeks” as it struggles with radar outages and a shortage of air traffic controllers.

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.