Indonesia’s Kaan Fighter Jet deal Faces US Congress Hurdle
Indonesia’s aspiring plan to acquire 48 stealth Kaan fighter jet units is facing potential disruption due to a decision by the united States Congress. Turkish Foreign Minister Hakan Fidan confirmed that the US Congress is withholding crucial export approval for General Electric (GE) engines needed for the Kaan fighter jet program, currently under development by Turkish Aerospace Industries (TAI).
According to Middle East Eye (24/9/2025), the issue centers on an export license for the GE F110 engine, which powers the initial Kaan prototype. The US Congress is reportedly preventing or delaying authorization for both the delivery of these engines and future co-production agreements.
Ankara views this as a continuation of tensions in US-Turkey defense relations, largely stemming from Türkiye’s acquisition of the Russian S-400 missile defense system and linked to restrictions under the Countering America’s Adversaries Through Sanctions Act (CAATSA).
While Turkey intends to develop its own indigenous engine, the TS-35000, for mass production of the Kaan (targeted for the 2030s), the rejection of the F110 engine could delay flight testing and initial production phases (Block 0 and Block 1), which rely on the GE engine.
The US-turkey relationship is described as “transactional,” marked by improvements at the executive level but persistent issues at the legislative level. Recent positive developments include US approval of F-16 fighter jet sales and modernization kits to Turkey, and Turkey’s ratification of Sweden’s NATO accession.
Turkey’s KAAN Fighter Jet Program: Engine Development and Design Changes
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The Turkish aerospace Industries (TAI) KAAN fifth-generation fighter jet program is progressing, with a key focus on achieving engine independence and refining its stealth design. Currently, the program relies on imported engines, specifically the General Electric F110, for initial prototypes. However, turkey is actively developing its indigenous TF-10000 engine, targeted for integration into the KAAN Block 2 and subsequent mass production versions, aiming to eliminate reliance on foreign suppliers.
indigenous Engine Development: the TF-10000
The development of the TF-10000 engine is central to the long-term success and strategic autonomy of the KAAN program.The engine is being developed by Turkish engine manufacturer, TUSAŞ Engine Industries (TEI) [https://www.tei.com.tr/en/projects/tf-10000-turbojet-engine/]. The goal is to have a fully domestically produced engine powering future iterations of the KAAN, reducing dependence on external sources like the United States.
While exploring alternative engine options from countries like Rolls-Royce in the UK or other non-western suppliers is absolutely possible, it would necessitate critically important redesign and retesting, leading to increased costs and schedule delays. This reinforces the priority placed on the TF-10000’s successful development.
Design Refinements: Addressing Stealth and Performance
Recent reports indicate a change in the design of the second KAAN prototype (P1). According to Indomiliter.com [https://www.indomiliter.com/terungkap-prototipe-kedua-jet-tempur-kaan-p1-lebih-kecil-ini-alasan-desain-stealth-turki-diubah/],the second prototype is smaller then the first.This alteration is attributed to refinements in the stealth design, likely aimed at reducing the aircraft’s radar cross-section (RCS).
Reducing RCS is a critical aspect of fifth-generation fighter jet design. A smaller overall size, combined with optimized shaping and the use of radar-absorbent materials, contributes to a lower RCS, making the aircraft more challenging to detect by enemy radar systems. The design change suggests Turkey is prioritizing stealth performance as the program matures.
KAAN Program Overview
The KAAN program aims to develop a domestically produced,fifth-generation fighter jet capable of performing a wide range of missions,including air-to-air combat,air-to-ground attack,and reconnaissance. Key features of the KAAN are expected to include:
* Stealth Technology: Advanced shaping and materials to minimize radar signature.
* Advanced Avionics: Cutting-edge sensors, radar systems, and electronic warfare capabilities.
* Network-Centric Warfare: Integration with other Turkish military assets through a robust data network.
* indigenous engine: The TF-10000 engine will be a cornerstone of the program’s self-sufficiency.
Key Takeaways
* Turkey is committed to developing a fully indigenous fifth-generation fighter jet with the KAAN program.
* The TF-10000 engine is crucial for achieving engine independence and reducing reliance on foreign suppliers.
* Design changes to the second prototype (P1) reflect a focus on optimizing stealth performance.
* The KAAN program represents a significant investment in turkey’s defense industry and technological capabilities.
Future Outlook
The KAAN program is a long-term undertaking with significant strategic implications for Turkey. Successful development and deployment of the KAAN, powered by the TF-10000 engine, will not onyl enhance Turkey’s air power but also establish it as a key player in the global aerospace industry. Continued investment in research and development, coupled with international collaborations where appropriate, will be essential to realizing the full potential of this ambitious program.