US Air Traffic Vulnerabilities Exposed by Old Computers, Severed Cables and Stalled Upgrades
A failed circuit and a severed backup fibre line at Philadelphia TRACON halted flights across the US Northeast on 21 September 2026. This article explains what broke, why old Compaq computers, 1960s copper and floppy-disk displays remain in service, what the GAO found a week earlier, why forty years of upgrade plans stalled, what the $12.5 billion programme buys and what it will really cost.
