Four Legacy Computer Systems Still Use Floppy Disks for Critical Aviation Information

The United States Federal Aviation Administration (FAA) has announced plans to phase out the use of floppy disks by 2028, bringing an end to a decades-old technology still used in some of its aviation information systems.

The development has drawn attention because floppy disks, largely replaced by modern storage devices nearly three decades ago, continue to support four computer systems used by the aviation authority. However, these disks do not directly track aircraft movements or manage air traffic. Instead, they are used in the Information Display System 4 to store and provide essential information, including weather updates, Notices to Airmen (NOTAMs) and airport status.

According to a US Department of Transportation document, the systems rely on floppy disks and outdated operating systems to deliver critical information to air traffic controllers. The department plans to integrate all four systems into modern information display equipment by 2028. Transportation Secretary Sean Duffy also announced the move, declaring that floppy disks from the 1980s would be phased out.

Floppy disks once represented a major breakthrough in data storage. The first 8-inch versions, introduced in 1971, offered just 80 kilobytes of storage. By 1988, the widely used 3.5-inch floppy disk could store 1.44 megabytes. However, the arrival of CD-ROMs, DVDs, USB drives and external hard disks gradually made the technology obsolete.

Why Has the FAA Continued Using Outdated Storage Technology?

Despite their limited capacity, floppy disks remained part of aviation infrastructure because replacing established systems involves significant safety and operational challenges.

Aviation authorities are often cautious about changing technologies that have functioned reliably for decades. New systems must undergo extensive testing and certification to ensure they perform safely under different operational conditions. Any failure in aviation infrastructure could have serious consequences.

The continued use of legacy technology is not limited to the United States. Japan discontinued government use of floppy disks in 2024, while the US Air Force stopped using 8-inch floppy disks in systems controlling nuclear missile silos in 2019.

The transition planned by 2028 reflects the broader modernisation of critical infrastructure, where technological upgrades must balance efficiency with reliability and safety.