Air Traffic Control Expert

A major communications breakdown at Newark Airport. Sources telling ABC News tonight air traffic control computer screens went dark for up to 90 seconds. Controllers losing communications with packed passenger planes approaching for landing and planes taking off. Unable to see, hear or talk to the pilots of the aircraft. Pilots could be heard learning of the outage over the radio.

A major communications breakdown at Newark Airport. Sources telling ABC News tonight air traffic control computer screens went dark for up to 90 seconds. Controllers losing communications with packed passenger planes approaching for landing and planes taking off. Unable to see, hear or talk to the pilots of the aircraft. Pilots could be heard learning of the outage over the radio.

A number of controllers on duty during that outage so shaken they've now taken medical leave.

A number of controllers on duty during that outage so shaken they've now taken medical leave.