According to South Korean defense analysts in recent social media posts, Korea Aerospace Industries (KAI) would be preparing to unveil the first new production KF-21 fighters, which will equip the South Korea Air Force as a complement to its F-15K “Slam Eagle” and F-35A “Freedom Knight” fighters. As reported, the event would take place on March 25, marking an important milestone for what is the first domestically developed fighter by the local military-industrial complex, even after various difficulties emerged involving the commitment of one of the program’s partners.
If what was outlined above ultimately takes place, it is worth noting that the unveiling would have been brought forward significantly from the date previously expected, with estimates pointing to the second half of this year—an internal target set by KAI itself. In this regard, it should be recalled that the company had indicated the presentation would occur once the final stages of assembly, systems integration, and operational certification were completed, during which the KF-21 would have to meet all requirements requested by South Korea’s Ministry of Defense.
Along those lines, it should be mentioned that in January of this year, KAI announced that it had already completed the flight-test phase with its new KF-21. As we previously reported, the South Korean company stated that the period included more than 1,600 tests with the platform to validate its operational capabilities—something it highlighted given that not a single accident was recorded during that phase.
Almost in parallel, South Korea’s Agency for Defense Development (ADD) also announced that the final phase of testing and evaluation had begun for the domestically developed active electronically scanned array (AESA) radar intended for the KF-21—an active, three-dimensional X-band radar (NATO I/J band, 8–12 GHz) that would provide the aircraft with a detection range on the order of 100 kilometers. These tests are expected, however, to continue at least until 2028 before large-scale integration onto the platform.
Finally, it is useful to recall that Seoul has already invested around $1.4 billion to secure production of an initial batch of 20 KF-21 fighters, following an agreement reached in 2024. Looking ahead to 2032, the Asian country expects to field a fleet totaling 120 aircraft, which would allow it to proceed with replacing its F-5 Tiger II and F-4 Phantom II fighters—the latter already retired from service due to age during 2024. For its part, according to local reports, Indonesia would be preparing to buy only 16 units, a fraction of the 48 originally planned.
Images used for illustrative purposes
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