FAA Floppy Disks: What Air Traffic Control's E-IDS Replaces

By Jaspal Singh November 6, 2026 Updated: November 6, 2026

The FAA's floppy disks were never steering planes. They sit in the display systems that show controllers weather, airport notices and pilot reports. The replacement, called E-IDS, starts with five sites and targets 435 by the end of 2028, on a project that has already changed builders and now costs more than double its appropriation.

What Happened

On November 5, 2026, Transportation Secretary Sean Duffy announced that the FAA has begun replacing floppy-disk-era equipment with the Enterprise Information Display System, or E-IDS. According to the release, E-IDS replaces four systems dating back to the 1980s that are in more than 400 FAA facilities.

The first five facilities are Atlantic City International Airport, Nashville International Airport, Greater Rochester International Airport, and data processing hubs in Atlanta and Salt Lake City. The FAA plans to reach 435 sites by the end of 2028.

Duffy's line was the headline: floppy disks are out. FAA Administrator Bryan Bedford was more precise, describing the work as replacing technology that "once relied on floppy disks" and moving away from "outdated, manual processes." Engadget and Gizmodo both covered the announcement on the same day, and both repeated the 435-site target.

The fuller picture sits in a report the Government Accountability Office published on September 14, 2026. GAO-26-107992 confirms that legacy display systems rely on obsolete technology such as floppy disks, along with 1980s interfaces and manual update methods. It also records three things the announcement left out:

The schedule moved sharply. Before the current modernization program, the display replacement was due on September 30, 2034. GAO's table now lists September 30, 2028, which is 72 months earlier.
The builder changed. GAO reported in September 2024 that the project was behind schedule and had significantly increased its cost estimate. In May 2025, the FAA terminated the contract with its vendor to develop the system in-house.
The money falls short. Congress appropriated $300 million for information displays. In June 2026, FAA officials estimated the phase 1 work at $637 million, which is $337 million more.

Why It Matters

The floppy disk is the memorable part, but the operational problem is information reaching controllers late or in awkward form. The FAA's E-IDS program page says the system addresses technical end-of-life issues in the old displays and two items on the Air Traffic Organization's list of top five safety issues: pilot report capabilities and the timely distribution of Notices to Airmen, known as NOTAMs.

A pilot report might describe turbulence or icing that another crew is about to fly into. A NOTAM might say a runway or navigation aid is out of service. Both lose value quickly if they arrive late, and GAO describes the old systems as cumbersome for controllers to search, retrieve and display information. Keeping several different display systems running also creates extra maintenance work.

The wider stakes are large. GAO says controllers manage up to 45,000 flights a day, and it counted 51 of the FAA's 138 air traffic control systems as unsustainable and another 54 as potentially unsustainable. Display systems are only one of 13 programs in the Brand New Air Traffic Control System initiative, or BNATCS, which also covers radios, voice switches, surveillance and fiber.

That context also limits what passengers should expect. The FAA promises faster access to information, fewer costly repairs and workarounds, and better safety. It has not published a figure for reduced delays or incidents, so nobody should read this as a promise of fewer late flights next year. The first visible benefit is more likely to be for controllers and the technicians who keep this equipment alive.

How It Works

Think of E-IDS as a shared digital noticeboard at the controller's position. The FAA describes a display board that gathers equipment issues and disruptions, air traffic conditions, weather impacts and advisories in one place. GAO describes the same class of system as a mix of text and graphics, such as approach charts combined with NOTAMs and weather.

The most important detail is what E-IDS is not. FAA Order JO 7210.638, effective October 1, 2026, calls it "an informational aid" and tells air traffic managers to ensure it is not used to issue control instructions. Radar scopes, automation systems and radios do that work, and they are separate programs. So a failed floppy drive here is not the same thing as losing sight of an aircraft, even though "floppy disks in air traffic control" makes it sound that way.

Three changes matter in practice:

One platform instead of several. The FAA's program page names the four legacy systems: IDS-4, ACE-IDS, NIDS and ERIDS. Replacing them with one system is meant to end the separate upkeep each one needs.
Networked data instead of local handling. E-IDS is meant to exchange information across the National Airspace System and connect to System Wide Information Management, the FAA's data-sharing infrastructure. Bedford says controllers will be able to instantly share flight alerts, restricted airspace schedules and pilot reports nationally.
Central management with local control. An enterprise platform handles local and national reference data. Each air traffic manager must still appoint a local data administrator to tailor the setup for that facility, working with bargaining unit representatives before approving changes.

Moving to a network also brings a new kind of risk, which the order anticipates. Managers must set procedures for an E-IDS outage or degradation, covering sector binder information, NOTAM distribution, pilot reports and other live operational information, and must notify their general manager when those fallbacks are in use. Standalone equipment fails one site at a time, while shared platforms can fail more widely, a tradeoff familiar from the Google Cloud London zone outage that affected banks. The FAA documents don't suggest E-IDS has that weakness, but a required fallback plan is sensible.

Why did floppies last this long? The FAA has not explained its own case in detail, but the general pattern is familiar in safety-critical systems: small data needs, certified hardware, and a high cost of change. Engadget notes that the US Air Force ended its use of 8-inch disks in nuclear missile silos only in 2019, and that Japan's government said in 2024 it had phased out all but one of its floppy-dependent systems. Old media can also keep a role when it suits the job, as with the magnetic tape now being revived for AI storage, and old hardware can outlast expectations, as NASA's call for a commercial Hubble reboost shows. Age alone isn't the whole problem here. The FAA's stated reason is that the old displays have reached technical end of life.

What's Still Unknown

Which machines used floppies, and how many are left. Neither the release nor the program page says which of the legacy systems used disks, how many drives remain, or what the disks held. Duffy says they contain vital weather and other critical information. Bedford's phrasing is in the past tense.

How many systems are going away. The release and the program page say four. The FAA's own order says five, as did a 2020 Leidos announcement of the original roughly $292 million contract. No document we read explains the difference.

Who the terminated vendor was. GAO does not name the vendor. Leidos announced the prime contract in 2020, and Gizmodo's report cites that award, but the FAA's release doesn't mention the May 2025 termination at all. None of these documents says how much of the earlier design survives in the in-house version.

The real finish date. GAO's table says September 30, 2028, while the release says the end of 2028. That may be a difference between a program date and a loose public target, but the FAA hasn't said. Either way, reaching 435 sites from five implies roughly 16 or 17 installations a month for the next 26 months, by our own calculation.

Whether the plan holds together. GAO found 11,389 project schedules that aren't integrated. Its example: technicians are due at a St. Louis facility in April 2027 for voice switch preparation, then again in January 2028 for display preparation. FAA officials also told GAO that replacing the displays carries risk because of program complexity. The Transportation Department partially concurred with GAO's recommendations, saying it maintains schedules and cost estimates for each program. GAO disagreed that those amount to an integrated master schedule.

Frequently Asked Questions

Does air traffic control really still use floppy disks?

Yes, at least until recently, though not for guiding aircraft directly. GAO's September 2026 report says legacy information display systems rely on obsolete technology such as floppy disks. Those displays show controllers reference information like weather and notices. The FAA has not said how many floppy drives remain in service or which of the older systems still depend on them today.

What is E-IDS?

E-IDS stands for Enterprise Information Display System. It is a digital display that puts operational information in one place for air traffic controllers, including equipment notices, traffic conditions, weather impacts and advisories. It also aims to improve how pilot reports and NOTAMs are collected and distributed. The FAA plans to install it at 435 sites by the end of 2028.

Are floppy disks a danger to flights?

None of the documents we reviewed says floppy disks directly caused a flight safety event. GAO does say aging air traffic technology overall has contributed to more delays and incidents, and the FAA lists timely NOTAM distribution and pilot reporting among its top safety issues. FAA policy treats E-IDS as an informational aid, separate from the systems used to issue control instructions.

Which airports get E-IDS first?

The first sites are Atlantic City International, Nashville International and Greater Rochester International, along with data processing hubs in Atlanta and Salt Lake City. The FAA calls these the first five facilities to receive the upgrades. Its release doesn't give a site-by-site schedule for the other locations, though it points readers to a Modern Skies progress tracker.

Will replacing floppy disks reduce flight delays?

The FAA hasn't made a specific claim about delays. It says E-IDS gives controllers faster access to information, reduces costly repairs and workarounds, and enhances safety. Better information could help traffic flow, but delays also depend on weather, staffing and capacity. Any effect will be hard to measure until many more of the planned 435 sites are running the system.

How much does E-IDS cost?

Congress appropriated $300 million for information display systems in July 2025 as part of a $12.5 billion modernization package. In June 2026, FAA officials estimated the phase 1 work at $637 million, leaving a $337 million gap. GAO warns that the FAA's high-level estimates for this phase understate total costs, so the final figure could be higher.

Who is building E-IDS now?

According to GAO, the FAA terminated the contract with its vendor in May 2025 and moved to an in-house development approach, which officials said offers more flexibility to move faster. Leidos had announced winning the original contract in 2020. Neither the FAA's new release nor GAO's report names a contractor for the current E-IDS work.