The Trump administration has announced a plan to replace the country’s aging air traffic control system with an all-new technology—but needs Congress to allot tens of billions of dollars.

The Trump administration has proposed a major overhaul of the U.S. air traffic control system in the wake of recent deadly plane crashes and technical failures.

Transportation Secretary Sean Duffy unveiled an ambitious air-traffic control modernization plan on Thursday, promising to make air travel in the United States safer and more efficient by ...