Seoul Moves to Build its Own Electronic Warfare Aircraft

Seoul Moves to Build its Own Electronic Warfare Aircraft

South Korea has formally taken the first big step toward building a home-grown electronic warfare (EW) aircraft, one that could one day match the capabilities of the world’s most advanced airborne jammers. The outlines of the programme, including the aircraft type, partners, and development scale, are now public following a major industry reveal in Seoul.

Korea Aerospace Industries (KAI) and Hanwha Systems unveiled their proposed EW aircraft design at the 2025 Electromagnetic Warfare Workshop on 17 September, marking their joint bid for the Defence Acquisition Program Administration’s (DAPA) Block-I electronic warfare aircraft development project. The programme, valued at KRW 1.7775 trillion (US$1.3 billion), aims to deliver four operational aircraft by 2034.

The Block-I effort seeks to give South Korea its first fully indigenous, long-range electronic attack capability. The aircraft will detect, jam and deceive enemy radar and communications systems from stand-off ranges, supporting suppression of enemy air defences (SEAD) and protecting national airspace in high-intensity operations. For Seoul, the programme signals a decisive shift from reliance on imported EW systems to a sovereign, locally integrated capability—a key ambition of its “K-defence” strategy.

Building a Sovereign EW Platform

The proposed aircraft will act as a long-range stand-off jammer, disrupting adversary radar networks and degrading command-and-control links across the battlespace. KAI has drawn direct comparisons to the U.S. Air Force’s EA-37B Compass Call, an advanced electronic-attack system based on the Gulfstream G550 platform.

KAI’s concept follows a similar philosophy that is high endurance, fast climb rates and ample onboard power, but tailored to Korean industry and operational doctrine. The aircraft would provide persistent electromagnetic coverage, protecting strike packages and supporting joint operations with the Republic of Korea Air Force (ROKAF).

How KAI Plans to Turn a Business Jet into an EW Workhorse

The design is based on the Bombardier Global 6500, selected for its long range, endurance, and roomy cabin, features that have made the Global family a favourite for ISR and EW missions worldwide.

Unlike traditional podded solutions, KAI and Hanwha propose an integrated mission architecture with side-mounted equipment bays on both fuselage flanks. This configuration is intended to reduce aerodynamic drag, preserve ground clearance, and optimise antenna placement for maximum jamming performance.

The partners also stress the importance of miniaturisation and power-thermal balance. Compact, high-efficiency subsystems are designed to limit weight penalties while allowing sufficient cooling for high-output transmitters. KAI says the layout maintains the aircraft’s aerodynamic and safety envelopes even under heavy electronic-mission load.

Proven Industrial Lineage

For KAI, the project builds on decades of domestic aircraft design and integration experience from the KT-1 basic trainer and the T-50/FA-50 light combat jet family to the KF-21 Boramae fighter and KUH/LAH helicopters. The company also handled the special-mission conversions for South Korea’s Boeing 737-based Peace Eye AEW&C and P-3CK maritime patrol fleets.

Hanwha Systems, meanwhile, contributes its long record in defence electronics, including jamming and signal-processing technologies already proven in naval and fighter applications. Together, the two firms represent a full-spectrum capability for airframe, mission-system and integration work.

The Rival Team

Competition comes from a Korean Air–LIG Nex1 consortium, which is offering a Gulfstream G550-based design. Korean Air brings heavy-maintenance and modification expertise, while LIG contributes electronic-warfare technologies from the KF-21 and other defence programmes. Both bids reflect Seoul’s strategy to keep high-value design and integration work within the national industrial base while leveraging proven global business-jet platforms.

Timelines and Deliverables

DAPA launched the Block-I programme in April 2025 and expects to select the prime contractor by early 2026. Development and prototype testing will run through the early 2030s, with the delivery of four operational aircraft targeted for around 2034.

Operationally, the aircraft will conduct jamming and deception missions against radar and communication emitters, offering stand-off protection for strike formations and contributing to joint force electronic-attack operations.

Technical and Programme Challenges

Integrating high-power jamming equipment into a compact business-jet airframe poses major hurdles. Managing thermal loads, ensuring power availability, and maintaining airworthiness certification are key risks. Although the programme seeks maximum indigenous content, certain specialised RF and semiconductor components may need to be sourced abroad, creating potential supply-chain vulnerabilities.

Cost and schedule control will also test the partners. Electronic-warfare programmes globally are known for complex integration and long test cycles. Moreover, South Korea will have to build training pipelines, doctrine and maintenance frameworks alongside the hardware to ensure combat readiness.

Strategic Impact and What Lies Ahead

If successful, the Block-I programme would represent a milestone in South Korea’s defence industrialisation, providing a sovereign capability to operate across the electromagnetic spectrum and strengthening deterrence against regional threats. It could also position Seoul as a future exporter of advanced EW platforms, offering alternatives to U.S. or European suppliers.

Analysts note that airborne EW systems have deep geopolitical implications. Control of the spectrum influences airspace access, coalition interoperability and intelligence-sharing arrangements. Seoul will therefore need to balance its drive for self-reliance with the need to maintain compatibility with allied forces.

DAPA’s final contractor selection and the detailed system requirements expected later this year will determine the pace of progress. The true test will come when prototypes demonstrate reliable jamming performance without compromising flight safety or endurance.

South Korea’s Block-I EW aircraft initiative has moved from vision to tangible competition. If delivered on schedule and to specification, it would mark a new phase in Seoul’s emergence as a full-spectrum aerospace power, one determined not just to control the skies, but also the invisible domain of the electromagnetic spectrum.South Korea has formally taken the first big step toward building a home-grown electronic warfare (EW) aircraft, one that could one day match the capabilities of the world’s most advanced airborne jammers. The outlines of the programme, including the aircraft type, partners, and development scale, are now public following a major industry reveal in Seoul.

Korea Aerospace Industries (KAI) and Hanwha Systems unveiled their proposed EW aircraft design at the 2025 Electromagnetic Warfare Workshop on 17 September, marking their joint bid for the Defence Acquisition Program Administration’s (DAPA) Block-I electronic warfare aircraft development project. The programme, valued at KRW 1.7775 trillion (US$1.3 billion), aims to deliver four operational aircraft by 2034.

The Block-I effort seeks to give South Korea its first fully indigenous, long-range electronic attack capability. The aircraft will detect, jam and deceive enemy radar and communications systems from stand-off ranges, supporting suppression of enemy air defences (SEAD) and protecting national airspace in high-intensity operations. For Seoul, the programme signals a decisive shift from reliance on imported EW systems to a sovereign, locally integrated capability—a key ambition of its “K-defence” strategy.

Building a Sovereign EW Platform

The proposed aircraft will act as a long-range stand-off jammer, disrupting adversary radar networks and degrading command-and-control links across the battlespace. KAI has drawn direct comparisons to the U.S. Air Force’s EA-37B Compass Call, an advanced electronic-attack system based on the Gulfstream G550 platform.

KAI’s concept follows a similar philosophy that is high endurance, fast climb rates and ample onboard power, but tailored to Korean industry and operational doctrine. The aircraft would provide persistent electromagnetic coverage, protecting strike packages and supporting joint operations with the Republic of Korea Air Force (ROKAF).

How KAI Plans to Turn a Business Jet into an EW Workhorse

The design is based on the Bombardier Global 6500, selected for its long range, endurance, and roomy cabin, features that have made the Global family a favourite for ISR and EW missions worldwide.

Unlike traditional podded solutions, KAI and Hanwha propose an integrated mission architecture with side-mounted equipment bays on both fuselage flanks. This configuration is intended to reduce aerodynamic drag, preserve ground clearance, and optimise antenna placement for maximum jamming performance.

The partners also stress the importance of miniaturisation and power-thermal balance. Compact, high-efficiency subsystems are designed to limit weight penalties while allowing sufficient cooling for high-output transmitters. KAI says the layout maintains the aircraft’s aerodynamic and safety envelopes even under heavy electronic-mission load.

Proven Industrial Lineage

For KAI, the project builds on decades of domestic aircraft design and integration experience from the KT-1 basic trainer and the T-50/FA-50 light combat jet family to the KF-21 Boramae fighter and KUH/LAH helicopters. The company also handled the special-mission conversions for South Korea’s Boeing 737-based Peace Eye AEW&C and P-3CK maritime patrol fleets.

Hanwha Systems, meanwhile, contributes its long record in defence electronics, including jamming and signal-processing technologies already proven in naval and fighter applications. Together, the two firms represent a full-spectrum capability for airframe, mission-system and integration work.

The Rival Team

Competition comes from a Korean Air–LIG Nex1 consortium, which is offering a Gulfstream G550-based design. Korean Air brings heavy-maintenance and modification expertise, while LIG contributes electronic-warfare technologies from the KF-21 and other defence programmes. Both bids reflect Seoul’s strategy to keep high-value design and integration work within the national industrial base while leveraging proven global business-jet platforms.

Timelines and Deliverables

DAPA launched the Block-I programme in April 2025 and expects to select the prime contractor by early 2026. Development and prototype testing will run through the early 2030s, with the delivery of four operational aircraft targeted for around 2034.

Operationally, the aircraft will conduct jamming and deception missions against radar and communication emitters, offering stand-off protection for strike formations and contributing to joint force electronic-attack operations.

Technical and Programme Challenges

Integrating high-power jamming equipment into a compact business-jet airframe poses major hurdles. Managing thermal loads, ensuring power availability, and maintaining airworthiness certification are key risks. Although the programme seeks maximum indigenous content, certain specialised RF and semiconductor components may need to be sourced abroad, creating potential supply-chain vulnerabilities.

Cost and schedule control will also test the partners. Electronic-warfare programmes globally are known for complex integration and long test cycles. Moreover, South Korea will have to build training pipelines, doctrine and maintenance frameworks alongside the hardware to ensure combat readiness.

Strategic Impact and What Lies Ahead

If successful, the Block-I programme would represent a milestone in South Korea’s defence industrialisation, providing a sovereign capability to operate across the electromagnetic spectrum and strengthening deterrence against regional threats. It could also position Seoul as a future exporter of advanced EW platforms, offering alternatives to U.S. or European suppliers.

Analysts note that airborne EW systems have deep geopolitical implications. Control of the spectrum influences airspace access, coalition interoperability and intelligence-sharing arrangements. Seoul will therefore need to balance its drive for self-reliance with the need to maintain compatibility with allied forces.

DAPA’s final contractor selection and the detailed system requirements expected later this year will determine the pace of progress. The true test will come when prototypes demonstrate reliable jamming performance without compromising flight safety or endurance.

South Korea’s Block-I EW aircraft initiative has moved from vision to tangible competition. If delivered on schedule and to specification, it would mark a new phase in Seoul’s emergence as a full-spectrum aerospace power, one determined not just to control the skies, but also the invisible domain of the electromagnetic spectrum.