Raytheon Delivers PhantomStrike Radar for KAI FA-50 Upgrade

A Decisive Advantage: Raytheon Delivers First PhantomStrike Radar for KAI’s FA-50

In a move set to enhance the capabilities of light combat Military-Aircraft, Raytheon, an RTX business, has officially delivered the first PhantomStrike® radar to Korea Aerospace Industries (KAI). This delivery, announced on October 20, 2025, marks a pivotal moment for KAI’s FA-50 Light Combat Aircraft fleet. The integration of this next-generation Active Electronically Scanned Array (AESA) radar system provides the proven and agile FA-50 platform with superior situational awareness, a feature typically reserved for more advanced and costly fighter jets. This development is not just a hardware upgrade; it represents a significant leap in combat capability for a platform gaining popularity on the international market.

The FA-50, a supersonic aircraft developed by KAI in partnership with Lockheed Martin, has long been regarded as a capable light combat and advanced training platform. However, a key limitation has been its Radar-Systems, which restricted its effectiveness in beyond-visual-range scenarios. The introduction of the PhantomStrike AESA radar directly addresses this gap, transforming the aircraft into a more formidable multi-role fighter. This upgrade is the centerpiece of the FA-50 Block 20 enhancement program, which is being supplied to international customers, including Poland. The successful delivery underscores a strong strategic partnership between Raytheon and KAI, positioning the FA-50 for a more competitive role in global defense.

This milestone follows an agreement announced on May 15, 2023, and has progressed rapidly, with a lab unit delivered in August 2025 and the first production unit now in KAI’s hands. The integration of such advanced Technology into a light combat jet highlights a broader trend in military aviation: making high-end capabilities more accessible and adaptable. As nations seek cost-effective solutions to modernize their air forces, the newly equipped FA-50 stands as a prime example of this evolution.

The PhantomStrike: Compact Power and Advanced Technology

The PhantomStrike radar is engineered to provide cutting-edge performance in a compact and efficient package. At its core is Active Electronically Scanned Array (AESA) technology, which allows for rapid digital beam scanning. Unlike traditional mechanically scanned radars, an AESA system can track multiple targets simultaneously, whether in the air or on the ground, and offers improved resistance to electronic jamming. This provides pilots with a significant advantage, enabling them to detect, track, and engage threats from a greater distance and with higher precision.

What sets the PhantomStrike apart is its use of Gallium Nitride (GaN) technology and a unique, fully air-cooled design. The GaN components enhance the radar’s power and efficiency, while the air-cooling system eliminates the need for heavy and complex liquid-cooling infrastructure. This innovative design simplifies integration, reduces maintenance requirements, and significantly lowers the system’s weight. Weighing under 150 pounds (68 kg), the PhantomStrike is nearly half the weight of a modern AESA radar, making it an ideal solution for platforms with strict size, weight, and power (SWaP) constraints, such as light-attack jets, unmanned aerial vehicles, and Helicopters.

Furthermore, Raytheon designed the PhantomStrike to be an affordable solution, reportedly costing nearly half as much as a typical fire control radar. This cost-effectiveness, combined with its high performance, makes advanced AESA technology accessible to a wider range of aircraft and operators. The radar is also approved by the U.S. Government for Direct Commercial Sale (DCS), which streamlines the export process and enhances the FA-50’s appeal to international customers seeking a high-performance, budget-friendly combat aircraft.

“Outfitting the FA-50 with the PhantomStrike radar upgrades the capability of a critical aircraft, providing unparalleled performance in a compact, affordable package. All while keeping these jets fast, agile and easy to maintain.”, Annabel Flores, President, Global Spectrum Dominance at Raytheon.

Transforming the FA-50 into a Multi-Role Contender

The KAI FA-50 Fighting Eagle is a supersonic light combat aircraft derived from the T-50 Golden Eagle advanced trainer. With a maximum speed of Mach 1.5 and the ability to carry up to 4.5 tons of munitions, it is a versatile platform operated by several nations, including the Republic of Korea, Poland, the Philippines, and Malaysia. The integration of the PhantomStrike radar is the most critical component of the FA-50 Block 20 upgrade, elevating the aircraft from a lead-in fighter trainer and light-attack jet to a credible multi-role fighter.

The primary benefit of this upgrade is the newfound ability to conduct beyond-visual-range (BVR) engagements. The PhantomStrike’s long-range detection and tracking capabilities will allow FA-50 pilots to identify and target hostile aircraft before they become a visual threat, a fundamental requirement in modern air combat. This enhancement dramatically increases the aircraft’s survivability and lethality, allowing it to hold its own against more advanced adversaries. The radar’s multi-mode functionality also improves its effectiveness in air-to-ground missions, providing pilots with high-resolution mapping and targeting data.

This capability boost significantly enhances the FA-50’s position in the global defense market. Air-Forces looking to modernize their fleets without incurring the massive costs associated with fifth-generation fighters now have a viable alternative. The upgraded FA-50 offers a compelling balance of performance, affordability, and operational flexibility. The successful delivery and integration of the PhantomStrike radar serve as a powerful demonstration of the platform’s potential, likely attracting further interest from nations seeking to bolster their air defense capabilities with a proven and now significantly more powerful aircraft.

Conclusion: A New Benchmark for Light Combat Aircraft

The Delivery of the first PhantomStrike radar to Korea Aerospace Industries is more than a simple hardware transaction; it marks a strategic enhancement that redefines the capabilities of the FA-50 platform. By equipping a light, agile, and cost-effective aircraft with a state-of-the-art AESA radar, Raytheon and KAI have created a product that meets the evolving demands of modern air forces. The radar’s advanced GaN technology, innovative air-cooled design, and compact form factor provide a decisive combat advantage without compromising the aircraft’s performance or imposing a heavy logistical burden.

Looking ahead, the successful integration of the PhantomStrike sets a new benchmark in the light combat aircraft market. It demonstrates that advanced sensor capabilities are no longer the exclusive domain of heavy, high-cost fighters. This development positions the FA-50 as a highly competitive option for nations worldwide and signals a broader industry trend toward modular, scalable upgrades that extend the relevance of existing platforms. As the battlespace grows more complex, the ability to make informed, split-second decisions is paramount, and the enhanced FA-50 is now better equipped than ever to meet that challenge.

FAQ

Question: What is the PhantomStrike radar?
Answer: PhantomStrike is a next-generation Active Electronically Scanned Array (AESA) radar developed by Raytheon. It is designed to be lightweight (under 150 lbs), compact, and affordable, utilizing Gallium Nitride (GaN) technology and an air-cooled system to provide advanced threat detection, tracking, and targeting capabilities for platforms like light-attack jets, drones, and helicopters.

Question: Why is this upgrade significant for the KAI FA-50?
Answer: The integration of the PhantomStrike radar is a major capability upgrade for the FA-50, addressing its previous limitation in beyond-visual-range (BVR) combat. It transforms the aircraft from a light-attack and trainer jet into a more formidable multi-role fighter, significantly enhancing its situational awareness, lethality, and marketability.

Question: What makes the PhantomStrike radar different from other systems?
Answer: Its key differentiators are its combination of high performance with a compact, lightweight, and air-cooled design. This makes it easier and more cost-effective to integrate into a wider variety of aircraft compared to heavier, liquid-cooled AESA systems, without sacrificing the advanced capabilities expected of modern radars.

Sources: RTX News Center