Newark Liberty International Airport suffered its second air traffic control outage in two weeks Friday, the Federal Aviation Administration confirms, capping another week of problems for travelers heading to and from New Jersey.

When the agency approved moving Newark air traffic controllers to Philadelphia, it said the odds of a dangerous communications breakdown was about 1 in 11 million.

Newark has had disruptions since April 28, when controllers lost contact and couldn't guide planes for upwards of 30 seconds.