United Airlines executives are trying to reassure their customers it is safe to fly at Newark Liberty International Airport, despite widespread cancellations and air traffic control issues continuing to spark concerns.

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.

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

The CEO of United Airlines maintains that New Jersey's Newark Airport is safe, despite construction, equipment failures and staffing issues that have resulted in delayed and canceled flights, NBC News' Marquise Francis reports.

Transportation Secretary Sean Duffy said Monday that “fast-track” fixes are being made to address the continuing communications and radar failures at Newark Liberty International Airport.

Airline has trimmed its daily routes following technology and staffing issues affecting New Jersey hub.

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

At times Monday evening, as few as three air traffic controllers per hour were lined up to monitor via radar the planes flying into and out of the airport, the Federal Aviation Administration said.

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

As few as three air traffic controllers were working at Newark Liberty International Airport Monday evening, according to a published report. That’s 11 fewer than the targeted amount for that time period, The New York Times reported.

BDL received three flights following a communications blackout at Newark Liberty International Airport in New Jersey on April 28.

Transportation Secretary Sean Duffy plans to reduce the number of flights in and out of the Newark Liberty International Airport for the “next several weeks.”