Within the scope of the KAAN Project, which involves the use of the F110-GE-129E engine, there are two sub-contracts currently in effect between TUSAŞ and General Electric (GE) Aerospace. Under the first sub-contract, which covers the supply of 10 engines, 10 engines were delivered as of September 2025. Negotiations are ongoing with the US Government for the second sub-contract, which covers the supply of 80 engines.The National Combat Aircraft - KAAN Project plans for the use of a domestically produced engine on Block 30/40 platforms.
On March 18, 2024, TUSAŞ Engine Industry Inc.'s (TEI) engine concept (TF35000) was selected. On August 5, 2024, the Preliminary Design Phase Contract for the MMU Original Engine Development Project was signed between the Presidency of Defense Industries, Department of Engine and Power Transmission Systems, and the TEI-TR Engine Joint Venture. The goal is to complete the Preliminary Design Phase by the beginning of 2026.