FAA Lifts Nationwide Ground Stop After Radar and Communications System Failure

The Federal Aviation Administration lifted a nationwide ground stop at 8:15 p.m. ET on November 14, 2026, following a communications and radar system failure. The disruption lasted approximately four hours and impacted air travel across the United States. The system instability began at 3:36 p.m. ET during maintenance operations.

System failure during maintenance

The disruption was caused by contractor L3Harris while performing maintenance to switch telecommunications lines from copper wire to fiber optic cable. At the time of the failure, L3Harris had completed over 70% of the planned airspace communications conversion from legacy copper wires to fiber optic cable. The instability forced officials to halt domestic flights to ensure safety.

The scale of the airspace disruption was significant. More than 3,500 planes were in the air when the ground stop was issued. By 8:00 p.m. ET, the number of aircraft in the airspace had been reduced to under 400. FAA Administrator Bryan Bedford stated that the worst of the disruption is behind us and that full schedule integrity is expected by the end of Sunday.

Impact on airline operations

The ground stop caused widespread cancellations and delays for major carriers. Major airlines including Delta Air Lines, United Airlines, and American Airlines cancelled approximately 20% of their flights. JetBlue faced a higher impact, cancelling 40% of its scheduled flights. While some reports suggest approximately 10,000 flights were cancelled and 7,000 flights were delayed, other figures suggest the numbers were between 4,000 and 3,000 cancellations and 3,000 delays.

The technical failure occurred within an air traffic control system that is described as antiquated and overloaded. This incident marks a significant disruption, as the last nationwide ground stop occurred in 2023, following a previous ground stop on September 11, 2001.

Emergency funding and investigation

Transportation Secretary Sean Duffy is requesting $50 billion in emergency funding to update the air traffic control system. Secretary Duffy said he is investigating whether the cause was incompetence or a faulty router. The proposed funding aims to address the aging infrastructure that currently manages United States airspace.

The incident has drawn attention to the vulnerability of national aviation infrastructure. While the immediate crisis has passed, the request for $50 billion highlights the scale of the upgrades required to modernize the existing system.

Glossary

• infrastructure — Infrastructure refers to the systems that manage United States airspace. It is described as aging and is currently being targeted for modernization upgrades.
• Federal Aviation Administration — The Federal Aviation Administration is a federal agency that issues charting notices regarding its databases and aeronautical charts. It is responsible for managing aeronautical information and updates.
• ground stop — A ground stop or ground delay is an action issued by the FAA. It is used to manage flight operations, such as during equipment outages.
• air traffic control system — An air traffic control system is an infrastructure used to manage airspace. It can be managed by military or civilian entities to ensure safe flight operations.