The Trump administration on Thursday proposed a multibillion-dollar overhaul of a U.S. air traffic control system that it said still relies on floppy disks and replacement parts found on eBay and has come under renewed scrutiny in the wake of recent deadly plane crashes and technical failures.

The plan calls for six new air traffic control centers, along with technology and communications upgrades at all of the nation’s air traffic facilities over the next three years.

WASHINGTON (Reuters) -U.S Transportation Secretary Sean Duffy will urge Congress on Thursday to approve billions of dollars to replace aging radar, telecommunications equipment, towers and other facilities in an overhaul of the crumbling air traffic control system,