ADS-B Exchange - The Unfiltered Network That Tracks What Everyone Else Hides

Every aircraft flying with ADS-B Out transmits its tail number, GPS position, altitude, groundspeed, and track once per second on an open, unencrypted frequency - to anyone with the hardware to receive it. ADS-B Exchange is the volunteer-run network that collects those signals without filters, showing flights that other tracking services suppress. Understanding the difference between what the FAA sees and what the public sees matters for every pilot flying with a transponder.

What ADS-B Actually Broadcasts - and Why It Can’t Be Made Private

Automatic Dependent Surveillance-Broadcast breaks down into four words that explain everything about how it works.

Automatic: the aircraft transmits continuously without being interrogated. There is no radar sweeping the sky. Dependent: the position data comes from the aircraft’s own GPS. The ground station doesn’t calculate your position - you report it. Surveillance: it builds a traffic picture that enables separation. Broadcast: omnidirectional, unencrypted, open to any receiver on the right frequency.

The signal is called 1090 MHz Extended Squitter. The format is publicly documented in aviation standards. The frequency is published. There is no encryption layer and no authentication handshake. Anyone can build a receiver - and it turned out to be startlingly easy.

The $30 Receiver That Changed Aircraft Tracking

Around 2011, hobbyists discovered that a cheap consumer electronics dongle originally designed to receive digital TV broadcasts in Europe could also receive 1090 MHz. The device, called an RTL-SDR after its chipset, cost $25–30. Paired with a simple antenna and open-source decoding software, it would display aircraft - tail numbers, altitudes, positions - plotting in real time on a laptop screen.

The aviation tracking websites had been building toward this. FlightAware launched in 2005, initially parsing FAA data feeds. FlightRadar24 started in 2006 focused on European airspace. Both recruited volunteer operators to host feeder stations: you run a receiver, feed position data to the network, receive premium access in return. By the time the FAA’s ADS-B Out mandate took effect on January 1, 2020 - requiring ADS-B Out for Class A, B, C, and E surface area airspace, plus Mode C veil airspace - these networks had thousands of volunteer stations across the country, often with better low-altitude coverage than the FAA’s own ground network.

The Filter Program Most Pilots Don’t Know About

Both FlightAware and FlightRadar24 participate in the FAA’s Privacy ICAO program (formerly called Limiting Aircraft Data Displayed, or LADD). Aircraft operators can request that their flight data not be redistributed to third-party consumer tracking websites. The FAA coordinates with participating services, and those services suppress the aircraft from their public maps.

Users of the program have included law enforcement agencies flying surveillance aircraft, military operations, corporate aviation departments, and private aircraft owners who prefer discretion. The suppression is real - on FlightAware and FlightRadar24, those flights disappear from public view.

The program applies only to voluntary partners.

Why ADS-B Exchange Operates Without Filters

ADS-B Exchange was built on a direct principle: if an aircraft is transmitting a public radio signal on a published frequency using a publicly-documented open standard, that signal is public. The FAA can ask third-party websites to voluntarily withhold data. But a radio wave that has already propagated through the atmosphere at the speed of light cannot be made private after the fact.

ADS-B Exchange does not participate in the Privacy ICAO program. It does not honor removal requests. If your aircraft is broadcasting on 1090 MHz, it appears on ADS-B Exchange. That is stated policy.

For several years this was primarily an enthusiast story - planespotters and hobbyists watching aircraft tracks unfold in real time. Then the accountability tracking accounts arrived.

How Celebrity Jet Tracking Put ADS-B Exchange in International Headlines

In 2021, a college student named Jack Sweeney created a tracking account following private jets associated with Elon Musk, drawing entirely on public ADS-B Exchange data. The account gained hundreds of thousands of followers. The flight logs documented short hops between nearby cities in concrete, timestamped detail. Musk reportedly offered Sweeney money to shut it down. Sweeney declined. When Musk acquired Twitter in 2022, the account was suspended under new platform policies. The ADS-B data kept broadcasting.

Taylor Swift’s aircraft received similar scrutiny after researchers compiled its flight history. The data became central to public debate about carbon emissions from elite private aviation - a quantifiable argument when you have the actual flight records.

Similar tracking accounts covered politicians, executives, and sports figures. Aviation journalists found that ADS-B Exchange provided a verifiable record: if a source claims a particular aircraft landed at a particular airport on a particular date, the archive can confirm or refute it.

The flight data was never secret. The FAA had it. Fixed base operators had it. The signal was in the air. The only question was whether any public-facing website would display it.

Who Else Uses This Data - Beyond the Headlines

The ecosystem of ADS-B Exchange data users extends well beyond accountability journalism.

Aviation insurance underwriters have begun incorporating flight tracking records into risk assessments. Accident investigators use historical track data to reconstruct what happened before an event. Weather researchers use actual flight paths to validate forecast model accuracy. Environmental organizations use aggregate track data to calculate emissions figures. Business intelligence analysts track corporate jet movements to draw inferences about merger talks and board activity.

The archive goes back years. That depth is part of what makes it useful.

The Military Dimension: When Transponders Go Dark

In the weeks before Russia’s invasion of Ukraine in February 2022, aviation enthusiasts were watching ADS-B Exchange in real time. U.S. Air Force RC-135 reconnaissance aircraft and Navy P-8 Poseidons were visible on open tracking systems - their flight paths over Eastern Europe and the Black Sea plotted publicly. Journalists were reporting on it. Defense analysts were studying loiter patterns.

Military aircraft fly with transponders on for legitimate reasons: avoiding airspace conflicts with civilian traffic, preventing certain air defense system responses. Those are real operational considerations.

What is equally informative is the reverse. When a known military aircraft goes dark - when the transponder switches off - that absence is itself data. The track line to the point of signal loss is visible. The silence says something.

What This Means for Pilots Flying With ADS-B Out

Every flight you make with ADS-B Out transmitting is archived on ADS-B Exchange. Search any tail number and pull up flights going back years - timestamps, departure and arrival airports, altitudes, routing. It is not only visible in real time. It is preserved.

If your aircraft is enrolled in the FAA’s Privacy ICAO program, your tail number will not appear on FlightAware or FlightRadar24. It will still appear on ADS-B Exchange. That is not a flaw in the program - it is the stated scope, which applies only to voluntary partners.

The volunteer feeder network has grown to thousands of receivers globally. In parts of the American West, the crowd-sourced coverage at low altitudes is actually better than the FAA’s government installation, because volunteers put receivers where they wanted coverage rather than where a procurement specification required it.

In 2023, ADS-B Exchange was acquired by JETNET, a company that aggregates aircraft ownership and transaction data for the business aviation industry. The acquisition raised concern among aviation transparency advocates about whether a corporate owner would change the no-filter policy. As of mid-2026, the policy remains intact.

The Engineering Decision That Made All of This Inevitable

The engineers who wrote the 1090 MHz specification wrote it as an open broadcast by deliberate choice. Published frequency. Published format. No encryption. No authentication. Alternative architectures existed that could have included those things - encryption was technically possible, authenticated access was a design option.

The aviation community chose open broadcast because it maximized compatibility, minimized avionics cost, and allowed any receiver to be built without licensing agreements or government-issued keys. It was the correct engineering decision for the purpose ADS-B was designed for.

ADS-B Exchange is what that design looks like with the voluntary filter layer removed. It is the signal as it actually exists in the air - broadcast, public, and permanent.

Key Takeaways

• ADS-B Out transmits your tail number, GPS position, altitude, and speed once per second on an open, unencrypted frequency accessible to anyone with a $30 receiver.
• The FAA’s Privacy ICAO program suppresses flight data only on participating services; ADS-B Exchange does not participate and displays all aircraft without filters.
• ADS-B Exchange archives flight history going back years - searchable by tail number, publicly accessible.
• The JETNET acquisition in 2023 has not changed the no-filter policy as of this writing, but it bears watching.
• The openness of the 1090 MHz standard was an intentional design decision. ADS-B Exchange is the natural, predictable result of that choice - not a loophole.