FAA’s Aging Equipment: A Recurring Problem Affecting Air Travel

The Federal Aviation Administration (FAA) has faced repeated disruptions to air travel due to equipment failures. These issues, often linked to outdated technology, have led to nationwide ground stops, significant flight delays, and cancellations. While officials point to aging infrastructure, including 1980s-era components and copper lines, the problem is complex and involves ongoing modernization efforts. Understanding the root causes and the steps being taken to address them is key for travelers and industry observers alike.

The Impact of Outdated Systems

Transportation Secretary Sean Duffy directly attributed a nationwide ground stop on November 13, 2026, to old equipment. He specifically mentioned “old switches, old routers,” and “1980s little copper lines” that became overloaded with data. This overload caused inconsistent data, leading to the system shutdown. The outage lasted over four hours, resulting in thousands of flight cancellations and tens of thousands of delays across the country.

The Government Accountability Office (GAO) has long highlighted these systemic issues. A 2024 review found that 51 out of 138 FAA air traffic control systems were rated as unsustainable, with an additional 54 deemed potentially unsustainable. This means over 75 percent of the systems face challenges related to aging infrastructure, lack of spare parts, outdated functions, or insufficient funding for maintenance. The GAO also noted that many of these unsustainable systems have a critical impact on the safety and efficiency of the national airspace.

A History of Recent Failures

The November 2026 incident is not an isolated event. Several other significant FAA equipment failures have occurred in recent years, often sharing a common theme: a single point of failure coupled with a backup system that is either unavailable, old, or also malfunctioning.

• January 11, 2023: A damaged database file in the Notice to Air Missions (NOTAM) system, which pilots use for flight information, caused a nationwide halt to all domestic departures. This outage lasted until mid-morning and resulted in over 11,000 delays and 1,300 cancellations. The FAA stated there was no sign of a cyberattack.
• Spring 2025: The Philadelphia approach control facility, responsible for Newark traffic, experienced a telecommunications link failure, which the FAA linked to a copper wire issue. This led to controllers briefly losing radar and radio contact, causing delays in Newark. A second failure at the same facility occurred in May 2025, resulting in a similar loss of contact for about 90 seconds.
• September 2025: Ground radar equipment at O’Hare International Airport failed, leading to a brief ground stop and significant flight delays.
• September 21, 2026: A primary circuit at the Philadelphia approach control failed, and its backup fiber line had been severed by construction work. This incident caused ground stops at multiple airports in the Northeast, including Newark, Teterboro, Philadelphia, JFK, and LaGuardia.

These events underscore a pattern of vulnerability within the air traffic control network.

Modernization Efforts and Funding

In response to these ongoing issues, the Department of Transportation announced a plan for a “Brand New Air Traffic Control System” in May 2025. Congress allocated $12.5 billion through a July 2025 law to fund these modernization efforts. The Department of Transportation has set a target to complete the initial phase of this work by the end of 2028.

This first phase focuses on upgrading communications, surveillance, weather, and training systems. The FAA estimates this phase could cost up to $16 billion, and they have requested an additional $1.5 billion in their 2027 budget to help cover the gap. A second phase, aimed at developing new automation to better track aircraft and optimize traffic flow, is estimated to cost around $10.2 billion, with no specific start or end dates yet defined.

What is Being Replaced and When

The modernization plan involves replacing a significant amount of aging infrastructure. Key components targeted for replacement include:

• Copper Telecom Lines: The plan aims to replace all 5,170 identified copper lines with fiber optic cables. As of May 2026, 2,560 of these lines had been replaced, with the FAA reporting 64% conversion progress by September 2026. The goal is to have all copper lines replaced by the end of 2028.
• Network Connections: Over 4,600 sites were initially planned for upgraded network connections (fiber, satellite, wireless), with a target of 5,000 connections by the end of 2028.
• Radios: Approximately 25,000 radios are slated for replacement, with a revised target of 27,000. Over 400 radio systems have already been upgraded.
• Digital Voice Switches: The plan includes replacing 475 digital voice switches, with a target of 450 by 2028.
• Outdated Radars: 618 radars past their operational life cycle are scheduled for replacement.
• Paper Flight Strips: The FAA is transitioning from paper flight strips to electronic versions, with 22 towers already converted.
• Floppy Disks: The agency is phasing out the use of floppy disks by 2028.

While progress is being made, the FAA has not always published consistent progress numbers for all equipment categories, and the counts for some items have changed between announcements.

Challenges in Replacement and Future Outlook

Despite the ongoing modernization, challenges remain. The GAO has noted that the FAA lacks a reliable lifecycle cost estimate and an integrated master schedule for the entire program. This means that nearly 11,400 separate project schedules are not linked, potentially leading to conflicts and disruptions at different sites. The GAO also warned that the speed of replacement might come at the cost of financial uncertainty and increased risk of disruption.

Furthermore, the process of replacing live circuits itself carries inherent risks, as it can lead to temporary outages. The FAA is also rolling out new software, such as the SMART traffic-flow tool, which is now active in all 22 en route centers. While the company that developed SMART stated the November 2026 outage was not related to their system, officials are still examining all possibilities.

Transportation Secretary Duffy has cautioned that equipment failures may continue until the modernization is complete. For travelers, this means continuing to build extra time into travel plans, especially for connections, and being aware of refund policies in case of cancellations. The transition to a fully modernized air traffic control system is a complex and lengthy process, with ongoing efforts to ensure the safety and efficiency of air travel.

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