The Spanish Air and Space Force (SASF), has been in search of a new generation jet trainer aircraft since 2023 to replace the SF-5Ms (license-produced by CASA). They plan to have new aircraft in 2028 in Spain for the training of fighter and attack pilots. Turkish Aerospace (TUSAŞ)’s HÜRJET was one of 4 competitors (including Boeing T-7, KAI T-50 and Leonardo M-346) of the SASF to replace its aged SF-5M Freedom Fighter Advanced Jet Trainers (designated as AE.9). HÜRJET New Generation Advanced Jet Trainer (AJT) is being considered as a leading candidate in Spain's effort to replace its aging SF-5M AJT fleet. On December 20, 2024, Türkiye and Spain signed a memorandum of understanding (MoU) for cooperation on the HÜRJET Advanced Jet Trainer (AJT) Aircraft Project and also for the development of an advanced pilot training system for the Spanish Air and Space Force. The MoU, which forms the basis of defence industry cooperation between Türkiye and Spain regarding the Spanish Air and Space Force’s Jet Trainer Aircraft Project, was signed by Spain’s Secretary of State for Defence Amparo VALCARCE on behalf of the Spanish Ministry of Defence and by Nüket Küçükel EZBERCİ, Türkiye’s Ambassador to Spain on behalf of the SSB.

As a clean-sheet design the single-engine, twin-seat HÜRJET is Türkiye’s first indigenous supersonic aircraft and one of the world’s few supersonic jet trainers. Powered by a GE’s 17,700lb thrust class F404-GE-104 turbofan engine the HÜRJET Next Generation AJT would replace the SASF’s 19 Northrop SF-5Ms operated by Ala 23 (23rd Wing) based in Talavera La Real (Badajoz) Airbase, which gives advanced flight training to SASF pilot candidates to fly EF-18M Hornets and Eurofighter Typhoons.