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.

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

With summer travel season approaching, the crisis at the New Jersey airport could mean weeks, if not months, of misery for travelers.

A technology outage took out radar and communications for Newark Liberty International Airport’s controllers briefly Friday morning, the second such breakdown in two weeks at a heavily trafficked U.S.