Global Combat Air Programme (GCAP)

The Global Combat Air Programme (GCAP), officially known as the Global Combat Air Programme, is a sixth-generation fighter aircraft development initiative jointly led by Italy, the United Kingdom and Japan. This program aims not only to build a new-generation air platform but also to create an integrated combat air system with multi-domain warfare capabilities. GCAP seeks to deliver innovative capabilities such as advanced artificial intelligence, sensor fusion and the ability to collaborate with unmanned systems, in order to maintain technological superiority, operational dominance and strategic autonomy.

Key Representatives of the Program

Each of the three participating countries has designated a lead representative. These are:

• Leonardo S.p.A. from Italy
• Japan Aircraft Industrial Enhancement Co. Ltd. / JAIEC from Japan
• BAE Systems from the United Kingdom

Detailed visual showing the representatives of each country. (BAE Systems)

Program History

The origins of GCAP trace back to the United Kingdom’s Tempest program, launched in 2015. Tempest emerged under the framework of the Future Combat Air System (FCAS) technology initiative, designed to develop a sixth-generation fighter aircraft, and was first unveiled at the Farnborough Airshow in the United Kingdom in 2018. Initially led by the United Kingdom, this initiative became a bilateral partnership in 2019 with Italy’s participation and later evolved into a trilateral collaboration in 2020 with Japan’s entry. As a result, the Tempest project was succeeded by the broader initiative now known as GCAP.

Following the formal adoption of the GCAP name and the clarification of its objectives, other countries began officially expressing interest in joining the program. For example, Saudi Arabia publicly declared its interest in participating in the GCAP project during the final quarter of 2024. In addition, countries such as Germany, Australia and Sweden have engaged in various official discussions regarding potential participation in the GCAP project.

Program Objectives

The program is founded on the principle of equal partnership among the three nations, aligned with their respective defense industrial policies and strategic priorities. It operates as a joint venture in which each country holds a 33.3 percent ownership stake. This structure aims to overcome the imbalances seen in previous collaboration models and to maximize the utilization of each participating nation’s defense industrial capacity. As of 2024, Italy has allocated a budget of 8.9 billion euros for the program, which is scheduled to run until 2050.

Design visualization of the manned platform to be developed under GCAP and targeted for entry into service in 2035. (Leonardo S.p.A.)

Projects Under GCAP

The projects being conducted under the initiative include:

• Development of a sixth-generation manned combat aircraft
• Construction of an operational architecture capable of collaborating with unmanned combat aerial vehicles (MUM-T)
• Development and production of next-generation electronic warfare systems
• Implementation of network-centric warfare systems and sensor fusion research
• Deployment of AI-enabled mission management systems
• Design and construction of aerodynamic structures with high maneuverability
• Design and development of advanced radar and directed-energy weapons
• Design of mission systems suitable for multi-domain operations

Program Timeline

• 2022: Official Announcement of the GCAP Project
• 2023: Signing of the General GCAP Agreement by Italy, Japan and the United Kingdom
• 2024: Signing of the Joint Venture (JV) Agreement
• 2035: Entry into Service of the First Developed Platform
• 2070+: Estimated Service Life of the Program

Significance of the Project in the Defense Industry Landscape

The Global Combat Air Programme is not only an initiative to develop a defense system based on advanced technology but is also regarded as a model of multilateral cooperation within the current international security context. Japan’s participation as an equal partner in a project of this scale and sophistication, outside the United States for the first time, is seen as a significant shift in its long-standing security strategy.

For the United Kingdom, the Global Combat Air Programme is viewed as part of the broader effort to reconfigure defense-oriented relations with Europe following Brexit. The program provides a foundation for non-EU European states to pursue strategic alignment through NATO and bilateral defense collaborations. Italy’s position as an equal partner in the program is assessed as confirmation of the institutional capacity and technological contribution potential of its defense industrial base. In particular, the establishment of a tripartite and equally shared structure, replacing the asymmetric partnership models frequently observed in previous collaborations, is considered a defining feature distinguishing GCAP from similar initiatives.

The goals of GCAP extend beyond merely enhancing engineering capabilities; they also depend on establishing sustained institutional coordination among the defense bureaucracies, industrial stakeholders and political decision-making mechanisms of the three nations. The future of GCAP is expected to be shaped by factors such as the joint use of R&D outputs, transparency in technology transfer processes and balanced distribution of production responsibilities. The first operational platform is targeted for entry into service by 2035, with technical testing procedures and multilateral defense diplomacy efforts continuing in parallel.