US aviation safety regulators proposed temporarily limiting flights at Newark airport to no more than 28 arrivals per hour after a pair of radar and radio outages fueled major disruptions 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.

Transportation Secretary Sean Duffy plans to reduce the number of flights in and out of the Newark Liberty International Airport for the “next several weeks.”