Spain studies Kaan fighter as combat-air hedge

Spain’s early discussions with Türkiye over the Kaan fighter have introduced another variable into Europe’s already complicated combat-air planning.

Madrid is balancing several pressures at once. The EF-18 Hornet fleet is ageing, the AV-8B Harrier force will need a successor, FCAS remains a long-term programme, and political resistance to deeper dependence on the US-controlled F-35 ecosystem has not disappeared. Kaan offers a different route: less mature than the F-35, but potentially more open around software access, weapons integration, electronic warfare equipment, datalinks, and domestic industrial participation.

The talks follow Spain’s more concrete training-aircraft arrangement with Turkish Aerospace. Airbus is leading Spain’s Integrated Combat Training System, which will convert Hürjet aircraft into the Spanish SAETA II configuration. IN Defence covered that industrial package in Airbus leads Spanish combat trainer industrial programme, where Spain set a 60% national industrial participation target across aircraft conversion, simulators, sustainment, and mission systems.

That earlier agreement gives the Kaan discussions a practical industrial base. Spain is not approaching Turkish Aerospace from a cold start. It already has a framework in which Turkish airframes are adapted through Spanish integration leadership, with Airbus coordinating national suppliers and training infrastructure. A fighter programme would be far more complex, but the underlying model is familiar: a foreign-origin platform becomes more attractive when domestic industry can shape mission systems, support, training, and future upgrades.

Türkiye is positioning Kaan as a fifth-generation combat aircraft with a stronger sovereignty offer than the F-35. The aircraft remains in development, and its stealth performance, maintainability, propulsion path, operational maturity, and export configuration have yet to be proven at scale. Spain would not be evaluating a like-for-like replacement for a fighter family with more than 1,000 aircraft produced and a large global sustainment network.

Capability maturity, however, is only part of the calculation. Fighter value increasingly sits in software authority, upgrade freedom, national weapons integration, mission-data control, electronic warfare refreshes, and through-life sustainment. A highly capable aircraft whose mission systems cannot be modified without external approval may solve a near-term operational problem while creating a long-term dependency.

Spain’s combat-air industry sits between near-term recapitalisation and future European autonomy. Eurofighter acquisitions under the Halcón programme help sustain current capability and industrial participation, but they do not fully answer the need for survivable fifth-generation effects in the 2030s. FCAS remains the future European ambition, although service entry is not expected before the 2040s. The F-35 offers a mature capability route, particularly for the navy’s Harrier replacement requirement, yet it comes with integration and sustainment constraints that many European governments now weigh more carefully.

Kaan gives Spain another lever in that debate. It allows Madrid to examine whether a non-US aircraft route could preserve greater control over modification, domestic workshare, and future electronic warfare or weapons integration. It also reflects Türkiye’s expanding role as a defence-industrial supplier to NATO and partner states. Turkish Aerospace, Aselsan, Roketsan, and HAVELSAN are growing across trainers, uncrewed aircraft, missiles, electronic warfare, naval systems, and command-and-control architectures.

A Spanish Kaan route would place heavy demands on industry. Final assembly, avionics integration, mission computers, electronic warfare equipment, datalinks, ground support equipment, spares, training devices, software update pipelines, and airworthiness certification would all need to be structured around Spanish requirements. If Spanish weapons were added, certification would extend into stores separation, seeker interfaces, flight testing, safety documentation, targeting software, and operational clearance.

Propulsion would remain one of the most sensitive areas. Advanced fighter engines combine metallurgy, digital control, high-temperature materials, maintainability, reliability engineering, and export licensing exposure. Any customer considering Kaan would need confidence that engine supply, depot maintenance, upgrades, and spare parts could be sustained across decades of service.

The discussions also sit alongside a broader period of strain in European aerospace manufacturing. IN Defence recently covered Airbus’ steadier position on Eurodrone and A400M in Airbus steadies Eurodrone and A400M outlook, underlining how multinational aircraft programmes remain exposed to industrial performance, customer confidence, and schedule discipline. Kaan would not replace Europe’s own programme base, but it could affect how Spain balances operational need against industrial autonomy.

A Spanish move towards Kaan is far from certain. The F-35 remains compelling where immediate low-observable maturity, sensor fusion, weapons integration, and naval STOVL capability are decisive. Eurofighter still sustains European industrial depth. FCAS remains Spain’s declared future-combat investment.

Even so, Spain’s engagement with Türkiye shows how combat-air procurement is widening beyond conventional alliance purchasing. The next fighter decision will be judged not only by performance in the air, but by who controls the software, who integrates the weapons, who owns the support chain, and who keeps the aircraft relevant after delivery.