AeroSpace Technology Co.,
AeroSpace Technology Co. (ASTK) is a South Korea-based Tier 1 aircraft structural components manufacturer serving global aerospace OEMs. It produces fuselages, cargo doors, and assemblies for Boeing, Embraer, IAI, Airbus, and Bombardier, with the Boeing 737 Section 48 as its flagship sole-supplier product.
- Company typePublic
- Founded2001
- HeadquartersSacheon, South Korea
- Headcount251–500
- GTM typeB2B
- OfferingHardware or Manufacturing
What AeroSpace Technology Co., does
AeroSpace Technology Co. (ASTK) is a South Korea-based Tier 1 aircraft component manufacturer established in 2001 and headquartered in Sacheon-si, with manufacturing facilities across two plants in the Sacheon industrial complex and a sales/business development office in Seoul. The company specializes in the design, development, and production of aircraft structural components and assemblies — including fuselage sections, frames, panels, doors, and stringers — for global commercial and defense aerospace manufacturers. ASTK's flagship product is the Boeing 737 rear fuselage Section 48, for which it serves as the sole Korean supplier and has reached a 1,000-unit production milestone since initial delivery in November 2012.
ASTK's commercial product portfolio spans structural assemblies for the Boeing 737, Boeing 747-8, Embraer E-Jet family, and the B757 Main Deck Cargo Door. Its defense and freighter-conversion portfolio includes components for the Embraer C-390 military transport and Israel Aerospace Industries' (IAI) B777 Passenger-to-Freighter (P2F) program, with P2F deliveries commencing June 2024. Production relies on CNC-based precision machining and assembly automation, with specialized capabilities housed in wholly-owned subsidiary K Aviation (카프에어로) and supported by an in-house aircraft materials testing laboratory established in 2017.
The business operates on a B2B enterprise model, generating revenue through long-term supply contracts negotiated directly with tier-1 OEMs including Boeing, Spirit AeroSystems, Embraer, IAI, Airbus, Korean Air, and Bombardier. ASTK is publicly listed on KOSDAQ under ticker 067390 and is undergoing a corporate workout program in which it received an A-grade (excellent) management evaluation in 2025, signaling progress toward graduation. Alpha Aero (알파에어로) became the largest shareholder following a February 2026 equity infusion of KRW 12 billion into K Aviation for new multi-purpose aerospace production infrastructure. Customer footprint spans the United States, Brazil, Israel, Czech Republic, Turkey, Malaysia, and South Korea.
AeroSpace Technology Co., firmographics
Firmographics- Name
- AeroSpace Technology Co.,
- Legal name
- ASTK (아스트)
- Website
- https://www.astk.co.kr
- Company type
- Public
- Founded year
- 2001
- Operating status
- Operating
- Headcount range
- 251–500 employees
- Short description
- AeroSpace Technology Co. (ASTK) is a South Korea-based Tier 1 aircraft structural components manufacturer serving global aerospace OEMs. It produces fuselages, cargo doors, and assemblies for Boeing, Embraer, IAI, Airbus, and Bombardier, with the Boeing 737 Section 48 as its flagship sole-supplier product.
- Ownership category
- akta.pro rank
AeroSpace Technology Co., industry classification
Industry- Product category
- Aerospace Components Manufacturing
- NAICS
- Other Aircraft Parts and Auxiliary Equipment Manufacturing (336413), Aerospace Product and Parts Manufacturing (33641)
- SIC
- Aircraft & Parts (3720), Aircraft Parts & Auxiliary Equipment, Nec (3728)
- akta.pro primary industry
- Primary Airframe Structures (Fuselage, Wing, Empennage) (IMABAEAA)
- akta.pro secondary industries
- Structural Assemblies & Integration (Airframe Subassemblies) (IMABAEAD), Doors, Hatches, Canopies & Access Panels (IMABAEAF), Metal Airframe Structures & Machined Parts (IMABAEAC)
Keywords
Where AeroSpace Technology Co., is headquartered
LocationHeadquarters
- HQ city
- Sacheon
- HQ country
- South Korea
- HQ region
- Asia
Offices4 records
Markets served
AeroSpace Technology Co., business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Operations, Supply Chain, Infrastructure, Technology or R&D
Revenue model
- Aircraft Structural Components Manufacturing: Design, development, and manufacturing of aircraft structural components including Boeing 737 rear fuselages, Embraer C390 parts, IAI components, and other aerospace structures. Revenue is generated through long-term supply contracts with major aerospace OEMs. 2025 full-year sales reached KRW 254.3 billion (all-time high), with 2025 Q3 cumulative sales of KRW 189.4 billion, up 59% YoY.
- Defense/Aerospace Components: Supply of defense-related aerospace components including military transport aircraft parts and components for international defense contractors. Expanded into defense sector through Embraer C-390 military transport program and contracts with Aero Vodochody.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels3 records
AeroSpace Technology Co., product offering
Product offeringCore offering
ASTK designs, develops, and manufactures aircraft structural components and assemblies, including frames, panels, fuselage sections, and cargo doors, for major global aerospace OEMs. It is the sole Korean supplier of the Boeing 737 Section 48 rear fuselage and supplies structural components for Boeing, Spirit AeroSystems, Embraer, IAI, Airbus, Bombardier, Korean Air, Aero Vodochody, and Malaysian aerospace manufacturers. The company also offers structural design and development services supporting both commercial and defense aerospace programs.
Product overview
ASTK (아스트) is a Korean aerospace company established in 2001 that operates as a Tier 1 aircraft component manufacturer. The company's product portfolio centers on aircraft structural components and assemblies, with its flagship product being the Boeing 737 rear fuselage Section 48, for which it is the sole Korean supplier achieving a 1,000-unit production milestone. ASTK's core offerings include cargo door assemblies (Main Deck Cargo Door), fuselage structures for commercial aircraft (Boeing 737, 747-8, E-Jet), and defense components for programs including Embraer C390 and IAI B777 P2F conversions. The company provides both manufacturing and structural design/development services, serving major global aerospace manufacturers including Boeing, Spirit AeroSystems, Embraer, IAI, and Turkish Aerospace Industries. ASTK is expanding into defense and space aerospace sectors through new contracts and production infrastructure.
Differentiator
Problem solved
Functional benefit
Products and services
- Boeing 737 Rear Fuselage (Section 48) Rear fuselage Section 48 component for Boeing 737 (including 737 MAX series) aircraft. ASTK is the sole Korean supplier to Boeing via Spirit AeroSystems under a contract valued at ~$850M. The component plays a critical role in altitude and direction control.
- Main Deck Cargo Door (MDCD) Assembly Cargo door assemblies for aircraft main deck, including B757 Main Deck Cargo Door. Supplied to aerospace OEMs for freighter aircraft.
- Boeing 747-8 Structural Components Aircraft structural components for Boeing 747-8, supplied to Boeing and its tier-1 partners.
- IAI B777 Passenger-to-Freighter (P2F) Conversion Components Structural components for IAI's Boeing 777 Passenger-to-Freighter conversion program, supporting cargo aircraft modification.
- Embraer C390 Military Transport Components Structural components for Embraer C-390 military transport aircraft, supplied for Korea's defense agency C-390 program and global defense supply chain.
- Aircraft Structural Design and Development Services Structural design, engineering, and development services for aircraft components, supporting both commercial and defense aerospace programs on a contract basis.
- Aero Vodochody Defense Aerospace Components Defense aircraft structural components supplied to Aero Vodochody, Czech Republic's leading aircraft manufacturer, supporting the global C-390 military transport supply chain.
Quantifiable outcome
- Achieved all-time high revenue of KRW 254.3 billion in 2025, up from previous records
- +3 more outcomes
Companies that use AeroSpace Technology Co.,
Customer profileNamed customers10 records
Segments3 records
Ideal customer profiles3 records
AeroSpace Technology Co., technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
AeroSpace Technology Co., partnerships and signals
Strategic signalPartnerships
Seven partnerships are on record, tiered strategic, core and minor.
- Aero VodochodystrategicCzech Republic's leading aircraft manufacturer. Contract signed in May 2026 for defense aerospace components supply. Represents expansion into European defense aerospace market through global C-390 related parts.
- Israel Aerospace Industries (IAI)corePartnership for B777 Passenger-to-Freighter (P2F) conversion program. ASTK developed and began delivering components for IAI's 777 P2F conversion starting June 2024. Initial development costs were invested and have now transitioned to production deliveries.
- Spirit AeroSystemscoreMajor strategic partner for Boeing 737 aircraft components. ASTK is the sole Korean supplier of Boeing 737 Section 48 (rear fuselage) with a supply contract valued at approximately $850 million (~KRW 1.18 trillion). Spirit is being acquired by Boeing, and ASTK's relationship with Spirit positions it to benefit from Boeing's turnaround. Production reached 1,000 unit milestone in October 2025.
- EmbraercorePartnership for E-Jet fuselage components and C390 military transport aircraft. ASTK participated in Korea's defense agency C-390 military transport program with Embraer. First unit delivered in 2019 with continued production. Expanded defense sector involvement through C-390 related contracts.
- KARP Aerospace (카프에어로)coreSubsidiary of ASTK established in 2017 with CNC-based precision machining automation capabilities. Produces high-precision aerospace components. Capital increased to KRW 16.5 billion through equity financing led by Alpha Aero in 2026. Building multi-purpose aerospace production infrastructure near ASTK headquarters on 16,500㎡ site targeting October 2026 completion.
- AST G (주식회사 에이에스티지)minorSubsidiary focused on aerospace components manufacturing. Representative director appointment ceremony held in March 2017.
- BoeingcorePrimary customer for commercial aircraft components. ASTK supplies Boeing 737 Section 48 rear fuselage as the sole Korean supplier. Contract with Spirit (Boeing subsidiary target) valued at ~$850 million. Benefits expected from Boeing turnaround and production ramp-up. B737 MAX10 certification developments could increase volumes.
Scale indicators8 records
Recent moves9 records
Expansion highlights5 records
AeroSpace Technology Co., competitors and assessment
Company assessmentDirect peers
- Spirit AeroSystems: Spirit AeroSystems is ASTK's primary long-term contract partner and one of the world's largest Tier-1 aerostructures suppliers. Both companies manufacture flight-critical fuselage and structural assemblies for Boeing 737, making Spirit the most direct operational and commercial comparable. Spirit is also being acquired by Boeing, which directly affects ASTK's go-to-market.
- Figeac Aero: Figeac Aero is a French Tier-1 aerostructures and precision machining supplier serving Airbus, Boeing, Embraer, and Bombardier. ASTK's partner page lists Figeac as a partner, and both companies compete head-to-head as mid-sized Tier-1 airframe component manufacturers serving the same global OEM customers.
- Hanwha Aerospace: Hanwha Aerospace (formerly Hanwha Techwin) is a major Korean Tier-1 aerospace and defense manufacturer producing aircraft engines, components, and space launch vehicles. Like ASTK, it supplies global OEMs and participates in Korean defense programs, making it the largest Korean domestic peer in overlapping airframe/engine component and defense aerospace markets.
- RUAG MRO International: RUAG MRO (Switzerland) is shown on ASTK's partner page and operates as an aerospace structures and components manufacturer serving European and global OEMs. Both companies supply Tier-1 structural assemblies to similar commercial and defense aerospace customers.
- LMI Aerospace: LMI Aerospace is a US Tier-1 aerostructures and components manufacturer producing machined parts, formed panels, and assemblies for Boeing, Gulfstream, and other OEMs. ASTK explicitly lists LMI as a partner, indicating direct collaboration in the global aerospace Tier-1 supply chain.
Regional players
- Korea Aerospace Industries (KAI): KAI is South Korea's flagship aerospace OEM (KF-21 fighter, T-50 trainer, KUH-1 helicopter, wings for Airbus A350/A320). While KAI is an OEM and ASTK is a Tier-1 supplier, both operate from Korea's aerospace cluster and increasingly collaborate on Korean defense programs, making KAI a natural regional comparable.
Broad incumbents
- Senior plc: Senior plc is a UK-listed Tier-1 aerospace and defense components manufacturer (airframes, fluid conveyance, structures) supplying Boeing, Airbus, Embraer, and major defense primes. Senior's portfolio of structural assemblies and precision-machined airframe components overlaps directly with ASTK's product mix.
- Triumph Group: Triumph Group is a large US-based aerospace structures and systems supplier producing airframe components, hydraulic/mechanical systems, and aftermarket services for Boeing, Airbus, and the DoD. Its aerostructures segment competes for similar Tier-1 airframe assembly and machining work that ASTK performs.
- Magellan Aerospace: Magellan Aerospace is a Canadian Tier-1 aerostructures and engine components manufacturer serving Boeing, Airbus, Lockheed Martin, and Bombardier. Both companies operate as mid-sized structural assembly and precision machining suppliers competing in similar OEM supply chains.
Others
- Triumph Aerospace Structures (sub-segment): ST Engineering's aerospace arm (ST Aero) is an MRO and aerostructures provider based in Singapore. ASTK's partner list explicitly names ST Engineering as a partner, and both operate as Asia-Pacific aerospace component suppliers with similar OEM customer portfolios.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks5 records
Key highlights6 records
Customer concentration
AeroSpace Technology Co., social profiles
Digital presenceAeroSpace Technology Co., financial estimates
Financial estimateRevenue estimate
Valuation estimate
AeroSpace Technology Co., leadership team
Management profileNumber of profiles
AeroSpace Technology Co., subsidiaries and ownership
Company hierarchySubsidiaries1 record
AeroSpace Technology Co., funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
AeroSpace Technology Co., M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about AeroSpace Technology Co.,
What does AeroSpace Technology Co., do?
ASTK designs, develops, and manufactures aircraft structural components and assemblies, including frames, panels, fuselage sections, and cargo doors, for major global aerospace OEMs. It is the sole Korean supplier of the Boeing 737 Section 48 rear fuselage and supplies structural components for Boeing, Spirit AeroSystems, Embraer, IAI, Airbus, Bombardier, Korean Air, Aero Vodochody, and Malaysian aerospace manufacturers. The company also offers structural design and development services supporting both commercial and defense aerospace programs.
Is AeroSpace Technology Co., a public or private company?
AeroSpace Technology Co., is a public company. It is classified as public and is currently operating.
When was AeroSpace Technology Co., founded?
AeroSpace Technology Co., was founded in 2001. It employs 251 to 500 people.
Where is AeroSpace Technology Co., based?
AeroSpace Technology Co., is headquartered in Sacheon, South Korea, in the Asia region.
How does AeroSpace Technology Co., make money?
Two revenue lines are on record. Aircraft Structural Components Manufacturing is the primary driver. The others are defense/Aerospace Components.
Who are AeroSpace Technology Co.,'s main competitors?
Direct peers on record are Spirit AeroSystems, Figeac Aero, Hanwha Aerospace, RUAG MRO International and LMI Aerospace. Korea Aerospace Industries (KAI) is listed as a regional player. Broad incumbents are Senior plc, Triumph Group and Magellan Aerospace. Triumph Aerospace Structures (sub-segment) is listed as an others.
Does AeroSpace Technology Co., have an API?
No public API is recorded for AeroSpace Technology Co.,.
What industry is AeroSpace Technology Co., in?
AeroSpace Technology Co.,'s product category is Aerospace Components Manufacturing. Its primary akta.pro industry code is IMABAEAA, Primary Airframe Structures (Fuselage, Wing, Empennage), with a secondary code of IMABAEAD, Structural Assemblies & Integration (Airframe Subassemblies). Its NAICS code is 336413 and its SIC code is 3720.