FAA Forced To Ground All American Airlines Flights

American Airlines was forced to briefly halt all departures nationwide Tuesday evening after an internal technology failure disrupted the connectivity of key operating systems, stranding passengers and delaying more than a thousand flights before service resumed later that night.

The Federal Aviation Administration’s Air Traffic Control System Command Center ordered the ground stop around 6:30 p.m. ET, barring American Airlines and its regional affiliates from taking off anywhere in the country.

The airline confirmed that a technical problem had temporarily disrupted the links between some of its systems, and said crews worked quickly to bring everything back online. The stoppage lasted under an hour before the FAA lifted it and American resumed departures, saying its infrastructure was functioning normally again.

Flight-tracking services reported that roughly 1,100 flights — about 30% of American Airlines’ schedule for the day — were delayed, while more than 200 flights were canceled outright. The outage compounded an already difficult night for travelers, as severe thunderstorms across the East Coast had independently triggered delays and ground stops at several major airports. Aircraft that were already airborne when the outage struck were not affected, and American used social media to update customers as its IT staff worked to restore functionality.

Carriers rely on a chain of interconnected platforms: reservation and booking software, crew-scheduling tools, weight-and-balance calculations, dispatch systems, gate and check-in technology, baggage handling networks, and links to air traffic control and regulatory data feeds.

A breakdown in any single link can have ripple effects. Even a fully-fueled, mechanically sound aircraft can be grounded if crew-legality systems or dispatch software go offline, since federal rules require that data before a flight can take off.

This kind of failure is not unprecedented. In March, a major technology failure catalyzed thousands of flight cancellations and delays. “A faulty software update tied to widely used cybersecurity tools caused Microsoft Windows systems to fail across multiple sectors, with commercial aviation among the hardest hit,” The Traveler reported. “The resulting outage led major North American airlines including American Airlines, Delta Air Lines, United Airlines, Air Canada, and several smaller carriers to halt or sharply curtail operations as critical dispatch, check-in, and crew-management systems went offline.”

In January 2023, a database malfunction knocked out the FAA’s Notice to Air Missions system, which distributes safety alerts pilots are legally required to review before flying. Because the system could not reliably push updated notices to flight crews, the FAA grounded all domestic departures nationwide until service was restored, producing widespread delays.