The Economic Times

FAA Ground Stop nationwide reason: Why are all flights across U.S grounded first time since 9/11-September 11, 2001 terrorist attacks? United Airlines, American Airlines say when will operations resume

FAA Ground Stop: This is the first nationwide ground stop since January 2023 when a key FAA computer system malfunctioned. Before that the last time had been after the September 11, 2001 attacks.