The failure was the second such incident in the past two weeks, amid continuing concerns over safety at the airport.

Travelers flying in and out of New Jersey's Newark Liberty International Airport were increasingly edgy about a host of recent problems at the busy airport, but they were most alarmed about two separate equipment outages in the last two weeks that disrupted communications between air traffic controllers and pilots.

Air traffic controllers for Newark International Airport experienced a second total blackout of its radar and communications for about 90 seconds overnight, according to the FAA. The White House said a copper wire is again to blame,