Radar screens briefly go dark at troubled Newark Liberty International Airport

Radar screens at Newark Liberty International Airport went black early Friday morning, raising more air traffic safety concerns at one of the region’s busiest hubs, federal authorities said.

The 4 a.m. EDT outage only lasted 90 seconds on a limited number of sectors, the FAA said, but the blackout will still be seen as a troubling development in the wake of revelations that controllers lost radio contact with pilots flying into EWR in recent months.