The Federal Aviation Administration (FAA) is expanding use of an $875 million AI tool, SMART, to “assist in managing air traffic across the entire national airspace system,” Ars Technica reported on Thursday—but the agency says that the route-management software will not affect air safety.

The FAA first rolled out the Strategic Management of Airspace Routing Trajectories (SMART) system for Washington, D.C., airspace in September and claims it has already rerouted 180 flights for average savings of 10 minutes and 80 gallons of fuel, Ars wrote (that’s just shy of $345 per flight, at jet fuel rates of $4.31/gallon as of Thursday). The agency wrote on Nov. 10 that after the D.C.…