Tusaş Engine Industries

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Tusaş Engine Industries

File:TEI Logo.png
File:TEI Eskişehir.jpg Corporate headquarters located in Eskişehir
Trade name	TEI
Company type	Incorporated company
Industry	Aerospace
Founded	1985 (1985)
Headquarters	Eskişehir , Turkey
Key people	Mahmut Faruk Akşit (CEO)
Number of employees	4000
Website	tei.com.tr/en

Tusaş Engine Industries (TEI; Turkish: TUSAŞ Motor Sanayii A.Ş.) operates as a producer and design hub specializing in aerospace engines and components for both military and commercial aircraft. Its main facility is situated in Eskişehir, Turkey.

Established in 1985, TEI emerged as a collaborative enterprise with ownership shared between Turkish Aerospace Industries holding 50.5%, GE Aerospace possessing 46.2%, alongside the Turkish Armed Forces Foundation, and the Turkish Aeronautical Association with a 3.3% stake.

History

The company's origins lie in producing components for the General Electric F110 engines used in the F-16 jets operated by the Turkish Air Force. Since 2010, significant focus has been placed on indigenous design efforts, with substantial investments dedicated to this area. Between 2014 and 2024, TEI successfully designed 13 different engines. Out of these, seven underwent flight testing, and six progressed to mass production. Currently, TEI is working on Türkiye's inaugural turbofan engine, the TEI-TF6000. The company envisions achieving full self-reliance in aviation engine technology for Türkiye in the long term.

In 2014, TEI employed approximately 1,200 personnel. By 2025, this figure had grown to around 4,000 employees. The workforce composition shifted as well; while blue-collar workers made up 70 percent in 2014, white-collar employees accounted for 57 percent by 2025. The company reached $400 million in export revenue in 2024. In 2025, TEI revealed plans to manufacture the TF-35000 engine, which is intended to power Türkiye's domestically developed TAI Kaan fighter aircraft.

Indigenous engines

File:TEI TS1400.jpg

TEI TS1400 Engine

• TEI-PD170 turbodiesel engines designed for aviation applications such as the TAI Anka unmanned aerial vehicles
• TEI-PD222ST, a variant of the turbodiesel aviation engine
• TEI-PG50, a two-stroke gasoline engine developed for aviation use
• TEI-PG50S, another two-stroke gasoline engine variant for aviation
• TEI-TJ300, a turbojet engine designed specifically for medium-range anti-ship missiles
• TEI-TJ90, a turbojet engine utilized in unmanned aerial vehicles such as the TAI Şimşek target drone
• TEI-TJ35, a turbojet engine model
• TEI-TP38, a turboprop engine
• TEI TS1400, a turboshaft engine designed primarily for rotary-wing aircraft such as the TAI T625 Gökbey and the TAI/AgustaWestland T129 ATAK#T129 ATAK helicopter
• TEI TS3000, a turboshaft powerplant intended for rotary-wing platforms including the TAI T925 and TAI T929 ATAK 2 helicopters
• TEI-TF6000, a turbofan engine currently under development
• TEI-TF10000, an advanced turbofan powerplant
• TEI-TF35000, a high-thrust turbofan engine designed for next-generation fighter aircraft

Licensed engines

• The General Electric T700 engine, specifically the T700-TEI-701D model, powers the T-70, which is a domestically produced version of the S-70 Black Hawk.
• The General Electric F110 engines are supplied as Original Equipment Manufacturer (OEM) units.
• The LHTEC T800 turboshaft engines are utilized in rotary-wing aircraft such as the T-129 Atak helicopterTemplate:Fix/category

Parts and modules

• Components for the CFM International LEAP engine are produced.
• Manufacturing contributions are made for the General Electric GEnx engine.
• Production modules are supplied for the CFM International CFM56 engine.
• Parts manufacturing is also performed for the General Electric GE90 engine.
• Components for the General Electric GE9X engine are produced as well.
• The T700 (T700-TEI-701D variant) also sees parts production.
• Manufacturing involvement extends to the Europrop TP400, which powers the Airbus A400M Atlas.
• Additionally, TEI participates in producing parts for various other engines.