The New Jersey airport, which has faced radar problems and major delays, is scrambling to bring in more air traffic controllers and complete construction.

US aviation safety regulators will allow fewer flights at Newark airport after technology outages and a staffing crunch fueled a surge in delays and cancellations in recent weeks.

Technology and staffing problems have plagued the airport, one of the nation’s busiest hubs. Officials say they are trying to resolve the issues, but concerns remain.