{"id":158546,"date":"2026-09-24T09:18:09","date_gmt":"2026-09-24T03:48:09","guid":{"rendered":"https:\/\/aviationa2z.com\/?p=158546"},"modified":"2026-09-24T04:21:19","modified_gmt":"2026-09-23T22:51:19","slug":"mass-produced-kf-21-boramae-enters-air-force","status":"publish","type":"post","link":"https:\/\/aviationa2z.com\/index.php\/2026\/09\/24\/mass-produced-kf-21-boramae-enters-air-force\/","title":{"rendered":"South Korea\u2019s KF-21 Boramae Makes History as First Production Fighter Enters Air Force Service"},"content":{"rendered":"\n

SACHEON\u2014<\/strong> South Korea<\/a> has delivered its first mass-produced KF-21 Boramae fighter to the Republic of Korea Air Force (ROKAF), moving the indigenous combat aircraft program from development into operational introduction.<\/p>\n\n\n\n

The aircraft departed Korea Aerospace Industries (KAI) in Sacheon (HIN) on September 22 and flew to Yecheon Air Base, its first operating location.<\/p>\n\n\n\n

The KF-21, designated No. 001, was formally accepted by Maj. Han Jae-seok of the 156th Fighter Squadron before he flew the aircraft to its new base.<\/p>\n\n\n\n

An FA-50, TA-50 and T-50 accompanied the fighter during its arrival at Yecheon, highlighting the transition from the development program to Air Force operations.<\/p>\n\n\n\n

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Photo: President of the Republic of Korea | X<\/figcaption><\/figure>\n\n\n\n

KF-21 Enters Air Force<\/h2>\n\n\n\n

The handover came 25 years and six months after South Korea first announced plans for an indigenous fighter in March 2001. Full-scale system development eventually began in December 2015 after years of feasibility reviews, funding delays and planning, with Indonesia joining the program as a development partner.<\/p>\n\n\n\n

South Korea designed the KF-21 as a 4.5-generation multirole fighter to replace older aircraft, including the retired F-4 Phantom and aging F-5 fleets. The aircraft measures 16.9 meters in length, has an 11.2-meter wingspan, and can reach Mach 1.8, with a maximum takeoff weight of 25.6 metric tons and a maximum payload of 7.7 tons.<\/p>\n\n\n\n

KAI unveiled the first prototype in April 2021, and the KF-21 completed its maiden flight in July 2022. Mass production began in June 2024, while the first production aircraft rolled out in March 2026 before undergoing acceptance procedures.<\/p>\n\n\n\n

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Photo: By KF-21A – Own work, CC BY-SA 4.0, https:\/\/commons.wikimedia.org\/w\/index.php?curid=110737690<\/figcaption><\/figure>\n\n\n\n

Testing Cleared Fighter<\/h2>\n\n\n\n

The KF-21 completed an extensive development campaign before entering Air Force service. Six prototypes conducted about 1,600 flight tests and covered more than 13,000 test conditions, including aerial refueling, weapons trials, flight-performance assessments and avionics testing.<\/p>\n\n\n\n

The Defense Acquisition Program Administration granted the KF-21 final combat suitability certification in May 2026 after the aircraft completed the required performance evaluations. <\/p>\n\n\n\n

System development was formally completed in July, clearing the way for the first production aircraft to enter the Air Force<\/a>.<\/p>\n\n\n\n

The Air Force reactivated the 156th Fighter Squadron in June 2026 to operate the new fighter. <\/p>\n\n\n\n

The unit had previously flown F-4E Phantom aircraft before its deactivation in 2012, and personnel have since received specialized training for KF-21 flight operations and maintenance.<\/p>\n\n\n\n

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Photo: President of the Republic of Korea | X<\/figcaption><\/figure>\n\n\n\n

120 Jets Planned<\/h2>\n\n\n\n

South Korea plans to introduce more than 100 KF-21 fighters in phases by the early 2030s. <\/p>\n\n\n\n

The current production plan calls for 40 aircraft with an initial focus on air-to-air capabilities by 2028, followed by 80 additional fighters with enhanced air-to-ground capabilities by 2032.<\/p>\n\n\n\n

The Air Force expects to declare the KF-21 operational in the second half of 2027, the Korea Herald <\/a>flagged.<\/p>\n\n\n\n

The September 2026 delivery therefore marks the beginning of a further phase involving training, maintenance preparation and gradual expansion of the fighter fleet.<\/p>\n\n\n\n

The program’s progression from a 2001 development proposal to a production aircraft entering Air Force hands represents a significant step in South Korea’s effort to establish an indigenous fighter capability.<\/p>\n\n\n\n

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South Korea Eyes 80 More KF-21 Fighters as KAI Nears Historic Air Force Deliveries<\/a><\/blockquote>