The U.S. Federal Aviation Administration resumed operations of its vital Notice to Airmen (NOTAM) system on Saturday after a hardware glitch led to a temporary outage lasting more than three hours.

The NOTAM system, which disseminates essential safety information to pilots and flight crews—ranging from runway closures and taxiway light issues to nearby parachute activities—was reset by the FAA, which is now investigating the root cause of the failure.

According to FAA officials, all active NOTAMs remained available until the system went offline, ensuring that critical safety alerts were not entirely disrupted. The agency stressed that it is closely monitoring the situation and working to prevent similar incidents in the future.

This latest interruption follows a similar outage earlier in February and a more severe disruption in January 2023, when a NOTAM failure contributed to the first nationwide U.S. ground stop since 2001, affecting over 11,000 flights. Amid these recurring issues, U.S. Transportation Secretary Sean Duffy announced plans to unveil a proposal next week aimed at overhauling the aging air traffic control system.

The National Air Traffic Controllers Association has long criticized the current NOTAM system for causing significant operational disruptions. President Nick Daniels recently testified before Congress, warning that replacing the outdated system could cost between $154 million for further research and up to $354 million for a complete overhaul. Additionally, the Government Accountability Office has urged urgent reforms, noting that nearly one-third of U.S. air traffic control systems are now unsustainable.

The restoration of the NOTAM system is a critical step in maintaining aviation safety and ensuring that pilots receive timely information in a rapidly evolving airspace environment.

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