TUSAŞ Engine Industries, Inc.
Turkish aerospace engine design, manufacturing, and engine-component company.
Last updated August 31, 2026
AI crawler reads
No AI crawler has read this profile since Oct 28, 2026.
Overview
TUSAŞ Engine Industries, commonly known as TEI, is a Turkish aerospace-engine company headquartered in Eskişehir. It operates as both a manufacturer of aircraft-engine components and a design center for aviation and defense propulsion systems. Its work covers commercial and military aircraft engines, helicopter powerplants, unmanned-aircraft engines, missile turbojets, turboprops, turbofans, and engine modules. The company was established in 1985 as a joint venture involving Turkish Aerospace Industries, GE Aerospace, the Turkish Armed Forces Foundation, and the Turkish Aeronautical Association. At formation, Turkish Aerospace Industries held 50.5 percent, GE Aerospace held 46.2 percent, and the two Turkish foundation or association participants together held 3.3 percent. TEI initially built its industrial base through licensed and component manufacturing for General Electric F110 engines used by the Turkish Air Force's F-16 fleet. This role connected the company to international aerospace production standards and to a broad supply chain serving both military and civil propulsion programs. Its manufacturing portfolio later expanded to include parts and modules for engines such as the CFM56, CFM International LEAP, General Electric GE90, GEnx, GE9X, T700, and Europrop TP400, among others. TEI has also produced or supported licensed engines for rotary-wing platforms, including the T700-TEI-701D variant for Turkey's T-70 helicopter and LHTEC T800 engines associated with the T-129 ATAK program. From approximately 2010 onward, TEI placed substantially greater emphasis on indigenous engine design and on building Turkey's domestic propulsion capabilities. The company states that it designed 13 engines during the decade from 2014 through 2024; seven of those engines had flown and six had entered mass production by the end of that period. Its indigenous portfolio includes the PD170 and PD222ST diesel aviation engines, PG50 and PG50S gasoline engines, TJ-series turbojets, the TP38 turboprop, the TS1400 and TS3000 turboshafts, and the TF-series turbofan projects. These programs address a range of applications, from unmanned aerial vehicles and target drones to helicopters, anti-ship missiles, and future fighter aircraft. Among TEI's most prominent domestic programs is the TS1400 turboshaft engine, intended for rotary-wing applications including the TAI T625 Gökbey and related helicopter platforms. The company is also developing the TF6000 turbofan, described as Turkey's first turbofan engine, together with the larger TF10000 and TF35000 projects. In 2025, TEI announced the TF35000 as a future engine for Turkey's domestically produced TAI Kaan fighter aircraft. These efforts reflect a strategic objective of reducing reliance on foreign propulsion suppliers and enabling Turkey to become more self-sufficient in aviation-engine technology. TEI has grown from a primarily component-oriented enterprise into a large aerospace engineering and manufacturing organization. Its workforce rose from about 1,200 employees in 2014 to approximately 4,000 in 2025. The composition of the workforce also shifted toward white-collar engineering and technical roles: blue-collar employees represented about 70 percent of staff in 2014, while white-collar employees represented 57 percent by 2025. In 2024, the company reported exports valued at approximately 400 million U.S. dollars. TEI therefore combines domestic defense-industrial objectives with participation in international aerospace supply chains.
History
TUSAŞ Engine Industries was founded in 1985 in Eskişehir as a joint venture linking Turkey's aerospace-industrial institutions with General Electric. The founding structure gave Turkish Aerospace Industries a 50.5 percent stake and GE Aerospace a 46.2 percent stake, while the Turkish Armed Forces Foundation and the Turkish Aeronautical Association together held the remaining 3.3 percent. The arrangement provided TEI with a Turkish industrial base and access to international aerospace-engine technology and production practices. The company's early activities centered on manufacturing components for General Electric F110 engines used in the Turkish Air Force's F-16 aircraft. This work established TEI as a participant in a major military-engine supply chain and helped develop capabilities in precision manufacturing, quality assurance, engine assembly, and aerospace materials. Over time, TEI broadened its production responsibilities to include components and modules for a variety of commercial and military engines. Its portfolio came to include work associated with CFM International CFM56 and LEAP engines, General Electric GE90, GEnx, GE9X, and T700 engines, and the Europrop TP400 used by the Airbus A400M Atlas. It also undertook licensed engine manufacturing for helicopter applications, including T700-TEI-701D and LHTEC T800 programs. A major strategic change occurred from around 2010, when TEI began directing more resources toward indigenous engine design. The objective was not simply to manufacture foreign-designed parts, but to create propulsion systems suited to Turkey's aircraft, unmanned vehicles, helicopters, missiles, and future combat-aircraft programs. The resulting portfolio included small gasoline engines such as the PG50 and PG50S, diesel aviation engines such as the PD170 and PD222ST, turbojets including the TJ35, TJ90, and TJ300, the TP38 turboprop, and larger turboshaft and turbofan projects. The PD170 became associated with the TAI Anka unmanned aerial vehicle, while the TJ90 was developed for unmanned-aircraft applications including the TAI Şimşek target drone. The TJ300 addressed medium-range anti-ship missile propulsion. In the rotary-wing field, TEI developed the TS1400 turboshaft for applications such as the TAI T625 Gökbey and T-129 ATAK-related programs, and the larger TS3000 for future heavy helicopter applications including the TAI T925 and TAI T929 ATAK 2. The TF6000, TF10000, and TF35000 projects extended the company's ambitions into turbofan propulsion, with the TF6000 described as Turkey's first turbofan engine and the TF35000 announced for the TAI Kaan fighter. According to the cited company history, TEI designed 13 engines during the period from 2014 to 2024. Seven had completed flight activity and six had reached mass production by 2024. This progression illustrates the company's movement from licensed production and component supply toward original propulsion-system development. TEI's workforce also expanded significantly, from approximately 1,200 employees in 2014 to around 4,000 in 2025. During the same period, its labor mix shifted from a workforce that was about 70 percent blue-collar in 2014 to one that was 57 percent white-collar by 2025, reflecting growing engineering, research, program-management, and design requirements. TEI remains both a domestic Turkish defense-industrial asset and an international aerospace supplier. Its reported 2024 exports of approximately 400 million U.S. dollars indicate continued participation in global engine supply chains, while its indigenous programs support Turkey's longer-term goal of greater national self-sufficiency in aviation propulsion.
- 2025
TF-35000 program is announced
[1]TEI announces the TF-35000 turbofan project for Turkey's TAI Kaan fighter aircraft.
- 2025
Workforce grows to approximately 4,000
[1]TEI's reported employee count reaches about 4,000, with white-collar staff representing 57 percent of the workforce.
- 2024
Indigenous engine portfolio records major progress
[1]TEI reports 13 engine designs produced between 2014 and 2024, seven engines flown, and six entering mass production.
- 2024
Exports reach approximately $400 million
[1]TEI reports export activity valued at approximately 400 million U.S. dollars.
- 2014
TEI workforce reaches approximately 1,200
[1]The company reports a workforce of about 1,200 employees, with blue-collar staff representing roughly 70 percent of personnel.
- 2010
Strategic emphasis shifts toward indigenous design
[1]TEI begins assigning substantially greater resources to the design and development of domestic aviation engines.
- 1985
TEI is established
[1]TUSAŞ Engine Industries is founded in Eskişehir as a joint venture involving Turkish Aerospace Industries, GE Aerospace, the Turkish Armed Forces Foundation, and the Turkish Aeronautical Association.
Products and positioning
A Turkish aerospace propulsion specialist combining licensed production and international engine-component manufacturing with increasingly ambitious indigenous engine design programs.
Diesel aviation engine
TEI-PD170
The PD170 is an indigenous turbodiesel aviation engine associated with Turkey's TAI Anka unmanned aerial vehicle program. It represents TEI's effort to provide domestically designed propulsion for unmanned aircraft and to reduce dependence on imported powerplants in that segment.
Diesel aviation engine
TEI-PD222ST
The PD222ST is part of TEI's indigenous turbodiesel aviation-engine family. It broadens the company's domestic piston-engine offering for aviation applications and supports the development of Turkish propulsion know-how for unmanned and other lightweight aircraft.
Gasoline aviation engine
TEI-PG50 and TEI-PG50S
The PG50 and PG50S are two-stroke gasoline aviation engines in TEI's indigenous portfolio. They are designed for comparatively lightweight aviation applications and form part of the company's broader range of domestically developed propulsion systems.
Turbojet engine
TEI-TJ35, TEI-TJ90, and TEI-TJ300
TEI's TJ-series turbojets address several defense and unmanned-aircraft requirements. The TJ90 is associated with UAV applications including the TAI Şimşek target drone, while the TJ300 is described as a medium-range anti-ship missile engine. The family demonstrates TEI's expansion beyond aircraft components into complete mission-specific propulsion systems.
Turboprop engine
TEI-TP38
The TP38 is an indigenous turboprop project within TEI's domestic engine portfolio. It extends the company's design activity into turboprop propulsion, a category relevant to aircraft requiring efficient power at lower and medium flight speeds.
Turboshaft engine
TEI-TS1400
The TS1400 is an indigenous turboshaft engine for rotary-wing applications. It is associated with platforms including the TAI T625 Gökbey and the T-129 ATAK-related helicopter ecosystem, and is a central element of Turkey's effort to establish a domestic helicopter-engine capability.
Turboshaft engine
TEI-TS3000
The TS3000 is a larger indigenous turboshaft project intended for future heavy rotary-wing applications, including programs identified with the TAI T925 and TAI T929 ATAK 2. It represents TEI's attempt to scale domestic propulsion design for more demanding helicopter platforms.
Turbofan engine · 2025
TEI-TF6000, TEI-TF10000, and TEI-TF35000
The TF-series projects are TEI's principal indigenous turbofan initiatives. The TF6000 is described as Turkey's first turbofan engine, while the TF10000 and TF35000 represent larger propulsion ambitions. In 2025, TEI announced the TF35000 as a future engine for the domestically produced TAI Kaan fighter aircraft.
Engine components and licensed engines · 1985
Licensed and component-production portfolio
TEI manufactures components, modules, and in some cases licensed engines connected with major international programs. The cited portfolio includes General Electric F110, T700 and T800 engines; CFM56 and LEAP; GE90, GEnx and GE9X; and the Europrop TP400. These activities provide TEI with a continuing role in both military and commercial aerospace supply chains.
Brand decisions
2025
Announce the TF-35000 fighter-engine projectProduct launchBackground
Turkey's domestic combat-aircraft ambitions created demand for a high-thrust indigenous turbofan engine.
Action taken
TEI announced that it would produce the TF-35000 for the TAI Kaan fighter aircraft.
Aftermath
The announcement positioned TEI's turbofan work at the center of Turkey's long-term national fighter propulsion objective.
2010
Increase investment in indigenous engine designStrategyBackground
TEI sought to move beyond its established role in licensed production and component manufacturing and support Turkey's longer-term aviation-engine self-sufficiency.
Action taken
The company increased the importance of domestic design work and directed substantial resources toward indigenous engine programs.
Aftermath
The strategy led to a growing portfolio of TEI-branded engines, including diesel, gasoline, turbojet, turboshaft, turboprop, and turbofan projects.
Sources2 sources
Cite this profile: Cite the canonical profile. /brand-wiki/tusaş-engine-industries-inc · Editorial policy · How profiles are compiled