Iridium Communications has agreed to acquire the remaining 61% of Aireon, its satellite-based aircraft-tracking subsidiary, in a $367 million deal that is really a bet on a single proposition: GPS is becoming unreliable enough to create a massive new commercial market for alternatives. The transaction hands Iridium full ownership of a platform that already monitors flights globally, and, critically, can see where satellite navigation is being jammed and spoofed in real time.
The McLean, Virginia-based operator is buying out five air navigation service providers: NAV CANADA, NATS of England, Naviair of Denmark, AirNav Ireland and Italy’s ENAV. NAV CANADA and NATS have extended their data services agreements through 2035 as part of the deal, according to SpaceNews, locking in two of Aireon’s anchor customers for another decade. Iridium expects the acquisition to add at least $100 million in annualized service revenue and roughly $30 million in annualized operational EBITDA.
A surveillance network hiding inside a comms constellation
Aireon’s tracking service has been operational since 2019, when Iridium finished deploying the Iridium Next satellites that host its ADS-B receivers in low Earth orbit. The result is the only space-based system that captures Automatic Dependent Surveillance-Broadcast signals from aircraft over oceans and polar regions, where ground radar simply does not reach.
The scale is now substantial. Aireon tracks something on the order of 190,000 flights a day from takeoff to landing, and its revenue has grown at a 10% compound annual rate over the past three years according to figures Iridium disclosed alongside the deal.
Why the timing matters: GPS is no longer reliable
The strategic logic of taking full control of Aireon becomes clear against the backdrop of what has happened to satellite navigation in the past three years. GPS jamming and spoofing have moved from rare nuisance to routine hazard in commercial aviation, particularly around Eastern Europe, the Middle East, the Baltic Sea and the Black Sea. The European Aviation Safety Agency issued a safety bulletin in July 2024 warning of the growing operational impact of GPS interference, and spoofing attacks, counterfeit signals that trick aircraft receivers into reporting false positions, surged by as much as 500% over the course of 2024, according to data cited by AeroTime drawn from Aireon and OPSGROUP analysis.
The consequences are not abstract. Spoofed positions can trigger false terrain warnings from Enhanced Ground Proximity Warning Systems, prompting startled crews to disable a critical layer of safety protection. That is the market Iridium is moving to capture.
From tracker to safety platform
Aireon’s space-based network is one of the few tools that can see the interference happening at scale. The satellites that pick up ADS-B transponder signals can also be used to map where GPS jamming and spoofing are occurring globally, a capability Iridium now owns outright. Iridium’s constellation generates thousands of data points every second, creating a data set that can be mined for patterns about operating conditions and interference that weren’t visible years ago.
That framing matters. Iridium is no longer selling Aireon purely as a tracking utility. It is positioning the platform as a safety and integrity layer for an aviation system whose primary navigation source has become contested.
The FAA question
One customer has been conspicuously absent from Aireon’s roster: the U.S. Federal Aviation Administration. The FAA operates its own ground-based ADS-B network and has not signed on for space-based surveillance, a gap that has long been seen as the single biggest growth opportunity for Aireon.
The FAA’s modernization efforts, including upgrading air traffic control systems, may remove one of the roadblocks. The agency’s recent commitments to overhaul aging infrastructure, combined with mounting concern over GNSS interference, give Aireon a more plausible path into U.S. airspace than at any point in its history. The deal also cleans up a fragmented ownership structure. AirNav Ireland is still in deployment, while ENAV, one of the original equity holders, never actually signed on as a customer, a constraint on commercial flexibility that full Iridium control now removes.
Building a GPS alternative
The Aireon purchase fits a pattern. In 2024 Iridium acquired Satelles, a GPS backup provider that uses the operator’s L-band satellites to deliver positioning, navigation and timing signals roughly 1,000 times stronger than conventional GPS and far harder to jam. Combined with Aireon’s interference-detection data, Iridium now controls both a way to see GPS attacks and a commercial service to route around them.
Iridium does not need to replace its current constellation until at least the mid-2030s, but the company is studying additional missions that could launch before then to add capabilities including space-based VHF voice and data communications, advanced ADS-B and more resilient PNT services. Space-based VHF, which would extend pilot-to-controller voice communications into oceanic and remote airspace using radio equipment already installed on aircraft, is part of the extended agreements with NAV CANADA and NATS. Iridium has also been developing chip-scale hardware for GPS-resilient positioning aimed at users who can no longer assume open-sky GPS will work.
The competitive opening
Iridium is not alone in trying to solve the GPS problem. Companies are developing quantum magnetic navigation systems, daytime star trackers for aviation, and testing quantum timing and enhanced LORAN technologies in parallel. But none of these alternatives is certified for primary commercial use yet, and none has the global, real-time situational awareness that a space-based ADS-B network provides today.
That gap, between long-term replacement technologies and an immediate operational problem unfolding right now in the cockpit, is what $367 million actually buys. Pending regulatory approval, Iridium will close on a vertically integrated stack: a satellite constellation, a surveillance platform that uses it, a backup PNT service that runs on the same hardware, and a roadmap toward next-generation payloads. The acquisition is not really for an aircraft tracker. It is for the only commercial position that benefits the worse GPS gets.
