Staff shortages and equipment failures at Newark Liberty International Airport have raised safety concerns in recent weeks.

Transportation Secretary Sean Duffy said he has a plan to upgrade old air traffic control tech but warned more flight disruptions could come first.

The FAA is working on a short-term fix to the problems at Newark Airport that includes technical repairs and cutting flights to keep traffic manageable while dealing with a shortage of controllers.

Many flights have been delayed at the busy hub because of radar outages, shortages of air traffic controllers and ...