The KF-21 Boramae fighter jet

 The KF-21 Boramae fighter jet is a 4.5-generation (4++) supersonic fighter aircraft developed by Korea Aerospace Industries (KAI) through a strategic partnership program between South Korea and Indonesia.

Boramae: This name means "Young Eagle" or "Young Hawk" in Korean. The name was selected through a public contest and officially announced at the rollout ceremony of the first prototype by President Moon Jae-in in April 2021. This name symbolizes the resilience and high hopes of the South Korean Air Force (ROKAF).

KF-21: An abbreviation of "Korean Fighter." The number 21 refers to the commitment of both countries to operate this sovereignty-protecting fighter aircraft in the 21st century.

Development History

Initial Idea (2001): This project was first proposed by former South Korean President Kim Dae-jung at the graduation ceremony of the South Korean Air Force Academy. Initially, the project was called the KF-X program.

Partnership with Indonesia (2014–2015): Indonesia joined as an official partner under a 20% cost-sharing scheme. Engineering cooperation began to secure technology transfer and production rights for Indonesia.

Prototype Launch (2021): The first physical prototype was officially shown to the public, marking the transition from the official name KF-X to the KF-21 Boramae.

First Flight (2022): The KF-21 successfully conducted its first test flight in Sacheon, South Korea. Test pilots from the Indonesian Air Force (TNI AU) also began flying gradually in subsequent air trials.

Amendment Agreement (2025): Indonesia and South Korea agreed to adjust Indonesia's payment contribution to approximately 600 billion won. This agreement was adjusted to reflect the proportion of technology transfer that Jakarta would receive.

Mass Production & Prototype Delivery (2026): The KF-21 fighter jet officially entered mass production. Based on the final contract, South Korea is prepared to deliver one physical prototype to Indonesia after the remaining administrative commitments are completed mid-year. The entire series of major development phases is scheduled for total completion by June 2026.