Newark airport sees second air traffic blackout amid weeks of major delays

FAA says radar went black due to malfunction at key control facility as officials promise that system will be modernized

Newark airport, one of the main hubs serving the New York City area, suffered another blackout of its air traffic control system, early on Friday morning, according to US aviation regulators - the second in recent weeks of disrupted flights that have become a major concern for passengers.

The Federal Aviation Administration (FAA) said that a key air traffic control facility in Philadelphia that guides aircraft in and out of Newark Liberty international airport in New Jersey had a malfunction.