The US Air Force (USAF) is working to bring open mission systems and rapid software updates, already used on cutting-edge platforms like the B-21 Raider and Collaborative Combat Aircraft, to its older “legacy” fleet, senior service officials said this week. The shift aims to keep aging aircraft relevant against fast-adapting threats.
The approach separates an aircraft’s flight safety software from its mission systems, allowing critical updates without pulling a platform out of service. A recent demonstration at Edwards Air Force Base (EDW), California, showed the method could update an F-22 Raptor in minutes rather than the months legacy aircraft often wait, Air and Space Forces reported.
Why The Air Force Is Prioritizing Open Mission Systems
Open mission systems are sets of specifications for the core architecture of an aircraft’s software. Any other software program that complies with those specifications can plug in seamlessly. Vice Chief of Staff Gen. John Lamontagne, speaking June 4, 2026, at AFA’s Mitchell Institute for Aerospace Studies, said this direction now applies broadly across the fleet.
“That is where we’re headed on just about every platform going forward,” Lamontagne said. He added that the service wants to prioritize open mission systems that are government-owned and can be upgraded at a time and place of its choosing.
The model matters for two reasons, according to Lamontagne. It prevents “vendor lock,” and it lets contractors push updates without revalidating an entire system. By separating the flying safety side of the airplane from the mission systems, crucial elements such as radar software can be updated while the platform stays operational.
The Air Force has already used this approach on the Collaborative Combat Aircraft (CCA) program, enabling fast and frequent updates. By comparison, legacy aircraft can sometimes go 18 months between updates.
Air & Space Forces Magazine reported in 2024 that the B-2 Spirit’s upgrade to new open mission systems software helped the aircraft stay relevant and credible during the transition to the B-21 Raider.
Battlefield Conditions Are Driving The Change
Experts say rapid software upgrades have become a key feature of recent combat. Bryan Clark, a senior fellow with the Hudson Institute, said both sides in a conflict now adapt at an increasing rate, and even a less technologically advanced adversary like Iran has access to many of the same underlying digital technologies as the United States.
That reality forces aircraft to update weapons mission profiles and electronic warfare systems to handle ground-based threats.
Clark pointed to GPS jamming around the Persian Gulf, where signals may be periodically spoofed or jammed. Aircraft must be reprogrammed to discount or manage unreliable GPS data so the platform can still estimate its position accurately.
Tools Built To Manage Fleet-Wide Updates
Software tools already exist to handle these frequent updates. Rob Slaughter, CEO of the startup Defense Unicorns, said his company’s Unified Defense Stack (UDS) Fleet system can load new software packages onto a squadron or more of aircraft using only an Android application on a tablet.
“I have these 35 different weapon systems and assets I can actually manage the software deployments across all of them,” Slaughter said. UDS Fleet manages groups of platforms with individual software loading, using one device for multiple platforms instead of a dedicated device for each.
A companion tool, UDS Enterprise, serves engineers and cybersecurity teams managing both cloud and on-site data centers. The pair works together to conduct software updates in forward-edge environments. Defense Unicorns specializes in air-gapped technology, meaning systems stay disconnected from the internet to guard against outside threats.
The F-22 Demonstration At Edwards
In March, Defense Unicorns used UDS to deploy software upgrades to the F-22 Raptor at Edwards Air Force Base, partnering with the Air Force Sustainment Center Software Directorate, according to a company release.
The company said the demonstration lays the groundwork to enable future Air Force personnel, including pilots and maintainers, to update software capabilities within an Open Mission Systems computing environment on the aircraft. The update was completed in minutes, Slaughter said.
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