World's First Airworthiness-Certified Quantum Navigation Backup System Debuts, Enabling GPS-Free Flight

Australian technology company Q-CTRL is set to unveil the Ironstone Opal at the Farnborough International Airshow in the UK — the world's first quantum navigation system to achieve airworthiness qualification. Using quantum sensors to deliver precise positioning without relying on satellite signals, the system allows aircraft and drones to navigate normally even when GPS is unavailable or compromised.

The Ironstone Opal has been validated across airborne, ground, and maritime platforms, and has become the first quantum navigation technology in the world to receive RTCA DO-160 flight safety certification. Q-CTRL says this milestone signals that quantum navigation is ready for real-world deployment in commercial aviation and unmanned aircraft systems.

A True Alternative to GPS

Q-CTRL notes that it will be the only dedicated quantum technology company exhibiting a quantum navigation solution at Farnborough. The Ironstone Opal is positioned as a GPS backup for both manned aircraft and drones, providing continuous navigation capability even when satellite signals are unavailable or actively disrupted.

As incidents of GNSS interference and spoofing grow more frequent, the technology addresses a critical gap in commercial and defense aviation. A navigation system that operates independently of GPS enhances mission resilience and reduces vulnerability for both crewed aircraft and autonomous platforms.

Q-CTRL notes that it has moved rapidly to bring quantum navigation from the laboratory to a commercially deployable GPS backup solution. Following extensive flight testing across manned fixed-wing aircraft, helicopters, and drones, the Ironstone Opal has now achieved RTCA DO-160 flight safety qualification and is ready for operational deployment.

"The estimated daily economic cost of a large-scale GPS outage in the UK is £1 billion. Now is exactly the right time for the aviation industry to gain access to this critical technology." — Michael J. Biercuk, CEO and Founder, Q-CTRL

High-Resilience Aerial Navigation

The Ironstone Opal is designed to operate entirely independently of satellite signals. Even under GPS jamming or spoofing attacks, the system continues to deliver navigation data without interruption.

Rather than relying on external radio signals, the system combines quantum sensors with magnetic field map-matching to determine an aircraft's position — comparing real-time local magnetic field measurements against a pre-stored magnetic map to estimate location without any GPS input.

Q-CTRL says the system provides drift-free positioning, effectively eliminating the cumulative navigation errors that accumulate in traditional inertial navigation systems over time. During flight testing, the Ironstone Opal demonstrated the ability to maintain Required Navigation Performance (RNP 0.3) — keeping positioning accuracy within 0.3 nautical miles for 95% of flight time, meeting the navigation requirements for critical phases of commercial flight operations.

Q-CTRL has also developed multiple compact configurations for different platforms. In addition to a manned aircraft variant, the company offers a sub-1 kg lightweight version purpose-built for drones. The sensor suite can be integrated inside the aircraft fuselage or mounted on the wings of larger surveillance UAVs.

As demand for satellite-independent, high-resilience navigation grows, Q-CTRL says it is already engaged in evaluation programs with commercial aircraft manufacturers, defense contractors, and government agencies, actively driving the technology toward full operational deployment.

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