Air traffic controllers in Philadelphia were guiding planes to Newark Liberty International Airport in New Jersey last week when communications suddenly crashed. “Approach, are you there?” one pilot ...

Air traffic controllers in Philadelphia had been guiding planes to Newark Liberty International Airport in New Jersey last week when communications suddenly crashed.“Approach, are you there?” one ...

For what seemed like an eternity, the radar screens went dark and all radio contact was lost to controllers handling air traffic heading in and out Newark Liberty International Airport last week.