FAA Still Uses Floppy Disks: Why Aviation Needs an Upgrade

The continued use of floppy disks by the United States’ Federal Aviation Administration (FAA) has raised eyebrows in an era of cloud computing, high-capacity storage and advanced aviation Technology. The agency, however, is not relying on these small magnetic storage devices to track thousands of aircraft moving through American airspace.

Instead, floppy disks remain part of four legacy computer systems used to provide air traffic controllers with important operational information, including weather conditions, Notices to Airmen (NOTAMs) and airport status updates. The FAA plans to replace these systems with modern information display equipment by 2028.

The development highlights an unusual challenge facing safety-critical industries: replacing old technology is not simply a matter of installing faster computers. New systems must be tested, integrated and certified without disrupting operations that millions of people depend on.

Why the FAA Still Uses Floppy Disks in 2026

The FAA’s continued use of floppy disks does not mean American air traffic controllers are navigating modern aircraft using technology from the 1980s. The disks support older computer systems that display information needed for aviation operations.

One of these systems is the Information Display System 4, or IDS-4. According to a US Department of Transportation document, controllers use this system, which is driven by floppy disks and an outdated operating system, to access critical information such as weather reports, NOTAMs and airport status.

These details help controllers understand conditions that could affect airport and flight operations. Weather information, for example, is important when assessing changing conditions, while NOTAMs communicate operational information about facilities, procedures and potential restrictions.

The distinction is important: the floppy disks are not responsible for tracking aircraft positions or independently controlling flight movements. They are part of legacy information systems that support the wider air traffic management environment.

The FAA’s plan is to eliminate the remaining floppy disk-based systems by 2028 as part of a broader modernisation programme.

FAA Plans to Replace Legacy Systems With E-IDS

The replacement programme centres on the Enterprise Information Display System, known as E-IDS. The new platform is designed to bring important operational information together on a modern display, giving air traffic controllers access to weather, equipment and traffic-related updates in one place.

US Transportation Secretary Sean Duffy announced the modernisation effort on November 5, 2026, describing the transition as a move away from floppy disks and towards modern aviation technology.

According to Duffy’s announcement, E-IDS was operating at five sites at the time, with plans to expand it to more than 400 FAA facilities by 2028.

The objective is to streamline how controllers access information rather than require them to rely on multiple ageing systems. Consolidating relevant operational data into a modern display could also make information easier to access during routine work.

However, the transition involves more than replacing storage devices. The new platform must work reliably across different facilities and operational environments. Its implementation therefore needs to account for compatibility, system performance and the requirements of aviation safety.

How Floppy Disks Became Obsolete

Floppy disks were once among the most widely recognised forms of portable computer storage. Before USB drives, memory cards and cloud services became commonplace, they offered a practical way to save, transport and transfer digital information.

The technology evolved considerably during its early years. The first 8-inch floppy disks introduced in 1971 could store approximately 80 kilobytes of data. Later developments increased their capacity, with formats reaching around 1.2 megabytes by 1977.

By 1988, the familiar 3.5-inch high-density floppy disk could store 1.44 megabytes. This made it a popular storage format for personal computers and office environments.

For years, floppy disks were used to distribute software, transfer documents and create backups. Their portability and relatively simple operation made them an important part of everyday computing.

However, their limited storage capacity eventually became a major disadvantage as software, photographs and other digital files grew larger. New storage technologies offered significantly more space while making data transfer faster and more convenient.

From 1.44 MB Floppy Disks to Gigabytes and Terabytes

The decline of floppy disks becomes easier to understand when their storage capacity is compared with the technologies that replaced them.

CD-ROMs Changed Computer Storage

Compact discs had been introduced in 1982, but their use in personal computers expanded during the 1990s. A standard CD-ROM could store approximately 650 megabytes of data, providing substantially more capacity than a 1.44 MB floppy disk.

One CD-ROM could therefore hold the equivalent of roughly 450 high-density floppy disks. This made CDs useful for distributing software, games, multimedia content and large collections of digital files.

DVDs Increased Storage Further

DVD technology pushed storage capacity higher. A standard single-layer DVD could hold approximately 4.7 gigabytes of data, equivalent to more than 3,000 1.44 MB floppy disks.

DVDs became important for distributing films, software and other large digital collections. Their higher capacity made them more practical for applications that had outgrown CDs.

USB Drives Made Portable Storage Easier

The arrival of USB flash drives marked another major shift. Unlike floppy disks, which relied on magnetic storage and required a dedicated drive, USB devices could connect directly to computer ports and store data electronically.

Early flash drives offered only a few megabytes of capacity, but their storage capabilities increased rapidly. Over time, devices capable of holding hundreds of gigabytes and even multiple terabytes became available.

External hard drives also expanded the possibilities of portable storage, with modern consumer and professional products offering capacities of several terabytes and, in some cases, more than 40 TB.

The Storage Explosion: From 80 KB to 40 TB

The difference between early floppy disks and modern storage devices is not limited to capacity. Modern technology has also made it possible to store enormous amounts of information in increasingly compact devices.

A 1 TB microSD card, for example, can measure approximately 15 mm by 11 mm by 1 mm and weigh around 0.3 grams. By comparison, a traditional 3.5-inch floppy disk measures approximately 90 mm by 94 mm by 3.3 mm.

Based on these dimensions, the microSD card occupies roughly 170 times less volume than the floppy disk while offering around 694,000 times more storage capacity than a 1.44 MB disk.

The comparison becomes even more striking when imagined physically. Stacking approximately 694,000 floppy disks, each around 3.3 mm thick, would create a tower roughly 2.3 kilometres high.

At an estimated weight of 14 tonnes for the entire stack, the comparison also illustrates how dramatically storage technology has reduced the physical burden of carrying digital information.

These figures show why floppy disks disappeared from mainstream computing. Modern devices can store millions of times more information in a fraction of the physical space.

Why the FAA Did Not Replace the Technology Earlier

With so many alternatives available, the FAA’s continued dependence on floppy disk-based systems may appear difficult to understand. However, the explanation lies in the particular demands of aviation technology.

In ordinary consumer electronics, replacing an outdated device is relatively straightforward. A user can purchase a new computer, transfer files and move on. Aviation systems operate under much stricter reliability and safety requirements.

Technology used in air traffic operations must perform consistently and provide dependable information. Replacing an established system involves checking how the new equipment interacts with existing infrastructure, whether it works under different operating conditions and whether it meets the necessary safety requirements.

A system that has been used for decades may be outdated, but its behaviour is familiar to the people responsible for maintaining and operating it. A replacement introduces new dependencies, software and potential failure points that must be carefully evaluated.

This does not mean older technology is automatically safer than modern equipment. Rather, the risks associated with changing a critical system must be understood and managed before the replacement becomes operational.

In an industry where incorrect or unavailable information can have serious consequences, reliability testing and careful implementation are essential. That helps explain why legacy systems can remain in service long after their underlying technology has become obsolete elsewhere.

The FAA Is Not the Only Organisation to Retire Floppy Disks Slowly

The FAA’s situation is part of a wider history of governments and major institutions continuing to use older technology because replacing established systems can be complicated.

Japan continued to rely on floppy disks in parts of its government administration for years. The country moved to eliminate these requirements in 2024 as part of a broader effort to modernise public-sector digital processes.

The US military also retained older storage technology in certain specialised systems. The US Air Force stopped using 8-inch floppy disks in systems associated with nuclear missile silo operations in 2019.

Older computer technology has also appeared in commercial aviation. Until 2020, certain software maintenance and update processes associated with the Boeing 747-400 still required technicians to use floppy disks.

These examples demonstrate that the retirement of outdated technology does not always happen at the same pace across industries. Systems used in specialised environments can remain operational long after comparable consumer products have disappeared.

What the FAA Modernisation Means for Air Traffic Controllers

The transition to E-IDS is intended to give controllers a more streamlined way to access important operational information. Instead of depending on separate legacy displays and outdated storage processes, the modern platform is designed to consolidate relevant information into a single interface.

Access to updated weather, equipment and traffic information is particularly important in an environment where conditions can change quickly. A consolidated display could make it easier for controllers to review different categories of operational information without moving between older systems.

However, the introduction of new technology should not be confused with an immediate transformation of every part of the US air traffic control network. The announced rollout is a phased programme, with five sites already using the new system and expansion planned across more than 400 FAA facilities by 2028.

The effectiveness of the programme will ultimately depend on how reliably the equipment performs after deployment and how successfully it integrates with existing aviation operations.

Why the Floppy Disk Story Is About More Than Old Technology

The continued presence of floppy disks inside an important aviation organisation makes for an unusual technology story, but the bigger issue is the challenge of modernising critical infrastructure.

Consumer technology evolves quickly because companies compete to offer better performance, convenience and storage capacity. Systems supporting aviation, energy, defence and other essential services face different priorities. Reliability, compatibility and the consequences of failure can make replacement programmes much more demanding.

The FAA’s planned transition shows that modernisation is not simply about removing an obsolete device. It involves replacing the wider systems that depend on it while maintaining the reliability of the services they support.

By 2028, the agency aims to have moved beyond its remaining floppy disk-based information display systems. The change will mark the end of a technology that once defined personal computing but has survived in specialised environments far longer than most people expected.

The real story, therefore, is not that floppy disks are somehow keeping aircraft in the sky. It is that even in one of the world’s most technologically advanced industries, replacing old infrastructure requires careful planning, extensive testing and a gradual transition.