KAI Sacheon Factory: The Heart of South Korea’s Aerospace Production (2026)

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Meta Description: KAI’s Sacheon facility: area, capacity, production lines, T-50/FA-50/KF-21 assembly infrastructure, and its strategic role in South Korea’s aerospace industry.
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KAI Sacheon Factory: The Heart of South Korea’s Aerospace Production

Sacheon, a city in South Korea’s southern Gyeongsang province, is the de facto capital of the country’s aerospace and defence industry. KAI’s main facility here produces, tests and delivers a broad product range — from trainers and combat jets to utility helicopters and unmanned aircraft.

The Sacheon facility is not just a factory; it is an integrated aerospace campus combining KAI’s R&D centre, flight test complex, and customer training infrastructure under one roof.

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Sacheon’s Strategic Location

Sacheon lies in Gyeongnam, southern South Korea, and the city’s airport is directly integrated with KAI’s assembly and flight-test operations. This allows newly built aircraft to begin test flights within a few kilometres of the factory floor — a logistics advantage that many competing manufacturers lack.

The city also hosts strong military infrastructure: Sacheon Air Base is home to ROKAF training and tactical platforms, meaning KAI and its primary customer share the same geographic ecosystem.

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Facility Infrastructure

KAI’s main Sacheon campus covers approximately 4.3 million square metres. The site encompasses production hangars, R&D laboratories, system integration facilities, paint and surface-treatment units, a customer training centre, and a flight test operations centre.

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Production Lines and Capacity

The most critical section of the Sacheon facility is the Final Assembly Line (FAL). Here the aircraft’s fuselage, wings, systems, and avionics are brought together; once ground tests are complete, the aircraft is prepared for first engine runs and then its first flight.

T-50 / FA-50 / TA-50 Assembly Line:
This platform family currently drives KAI’s most active export business. The Sacheon assembly line has significantly expanded its annual capacity over the past decade. The FA-50PL (Poland) and FA-50GF (Philippines) orders directly load this line.

KF-21 Boramae Assembly Line:
The KF-21 programme brought new production infrastructure to Sacheon. Line capacity is being expanded incrementally as the programme transitions to series production. First series-production deliveries to ROKAF are planned for 2026–2028.

Helicopter Line:
The KUH-1 Surion, LAH, and MUH-1 Marineon are built on a separate rotary-wing assembly line at Sacheon. Started under a technology partnership with Airbus Helicopters, this line has become increasingly independent as its domestic content ratio has grown.

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R&D and System Integration Infrastructure

KAI’s R&D capacity at Sacheon is concrete evidence that the company is not merely a manufacturer but a system integrator. AESA radar integration tests conducted jointly with ADD for the KF-21 programme, electronic warfare system verification, and weapons management system development work are all carried out at Sacheon facilities.

The integration challenge: A modern combat aircraft requires hundreds of sub-systems to operate in coordinated fashion. KAI’s avionics integration laboratories enable these systems to be tested together in a virtual environment before any live flight — a critical infrastructure asset for shortening development cycles.

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Flight Test Operations

KAI’s flight test centre at Sacheon covers a broad operational spectrum, from developing new platforms to conducting customer delivery flights. Test pilots employed by KAI undergo world-standard certification processes.

The test flights conducted under the KF-21 programme collectively represent the largest body of military and civil test flying in South Korea’s history. All 2,000-plus test flights logged through end-2024 were Sacheon-based.

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MRO Capacity: Keeping the Fleet Alive

The Sacheon facility not only produces new aircraft; it also meets the maintenance and modernisation needs of the ROKAF’s existing fleet. The F-16 KF-16 Avionics Modernisation Programme, C-130 Hercules maintenance and overhaul programmes, and various helicopter modernisation projects are all conducted in Sacheon’s MRO hangars.

This MRO capability gives KAI both domestic business continuity and the credentials to bid for international MRO contracts.

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Employment and Economic Impact

KAI is one of the region’s largest employers with more than 10,000 direct employees in Sacheon and surrounding areas. When sub-contractors and the supply chain are included, KAI’s direct and indirect contribution to the Gyeongnam economy reaches significant scale.

The company has signed cooperation protocols with regional universities, led by Gyeongsang National University, for engineering and technical personnel — turning Sacheon into one of the focal points of South Korea’s aerospace engineering talent pool.

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FAQ

Where is the KAI Sacheon facility?
Sacheon is located in Gyeongsang province, southern South Korea. KAI’s main production campus is integrated with the city’s airport.

What aircraft does KAI produce at Sacheon?
The T-50, FA-50, TA-50 family; KF-21 Boramae; KUH-1 Surion, LAH, MUH-1 Marineon helicopters; and the KUS-FS UAV platform are all produced at Sacheon.

How large is KAI’s Sacheon facility?
The main campus covers approximately 4.3 million square metres, hosting production, R&D, flight test, and customer training infrastructure.

Does KAI produce only at Sacheon?
Sacheon is KAI’s primary production centre, though the company has offices and smaller facilities in Seoul and other cities. Final assembly and all flight testing are exclusively conducted at Sacheon.

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References:
– KAI Official Website and Corporate Reports
– DAPA Programme Reports
– Defense News — KAI Production Capacity
– Aviation Week — KF-21 Sacheon FAL coverage

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