Several times over the last year, Newark controllers lost radar or radio service, leaving them unable to talk with planes they were tracking.

The Federal Aviation Administration said Wednesday that it plans to upgrade the technology used to get radar data to air traffic controllers directing planes to the troubled Newark, New Jersey, airport, and improve staffing to alleviate problems that have caused hundreds of flights to be canceled there.

Ongoing runway construction and air-traffic control staffing shortages have caused massive problems at New Jersey's Newark Liberty International Airport. Now the FAA is implementing changes.