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

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.

The shortage on Monday forced the F.A.A. to delay flights to the busy airport for up to nearly seven hours, the latest problem to plague the airport.

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.

Greg Raiff, founder and CEO of Elevate Aviation Group, told Fox News Digital that under-invested infrastructure and major staffing shortages are disrupting flights at EWR, and the immediate solution is to decrease the number of flights while increasing recruitment.

More than 450 flights were delayed Monday causing chaos at Newark and Atlanta international airports following the weekend’s ground stop order over air traffic control failures. The Federal Aviation Administration (FAA) issued a warning that a second ground stop order was possible given the situation at Hartsfield-Jackson Atlanta International — the busiest airport in the US — which has seen more than 370 delays as of Monday afternoon,