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.

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.

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.

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.

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.