Airlines will meet with the Federal Aviation Administration Wednesday to address weeks of delays at Newark Liberty International Airport following air traffic control staffing and equipment issues.

US Transportation Secretary Sean Duffy has ordered a reduction of traffic at the airport for the “next several weeks,” insisting that it’s safe to fly out of New Jersey’s busiest airport, despite it using an “old” system, which he previously described as being run on “copper wire and floppy disks.”

A staffing shortage, runway construction and deferred maintenance to crucial air traffic technology have made Newark Airport a national laughingstock.

Sunday's incident marks the fourth time in the past two weeks that technical problems have disrupted air traffic at Newark.

Duffy laid out an extensive plan to replace the nation’s outdated air traffic control system last week, including installing 4,600 new high-speed data connections and replacing 618 radars, but didn’t put a price tag on the plan other than to say it will cost billions.

A portion of the Denver air route traffic control center experienced a 90-second loss of communications late Monday, the Federal Aviation Administration said in a statement.

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

Federal Aviation Administration officials and Secretary of Transportation Sean Duffy are at separate hearings Wednesday morning on Capitol Hill, as cancellations and delays continue to plague Newark International Airport and impact other airports around the country.