The final two of 155 airports to receive ADS-B, Akron-Canton Airport and Mansfield Lahm Regional Airport, both in Ohio, became operational last month. “This brings the operational rollout of ADS-B baseline services to a successful conclusion, on schedule and within budget, well in advance of January 1, 2020, the date by which aircraft flying in certain, controlled airspace must be equipped with the technology,” says the FAA.