Korean KF-21 Fighter jet's First Production Model Enters Final Assembly

Final phase involves integrating all external and internal components of the aircraft,
  • Defensemirror.com bureau
  • 08:41 AM, May 20, 2025
  • 7096
Korean KF-21 Fighter jet's First Production Model Enters Final Assembly
The first KF-21 awaits final assembly at KAI's Sacheon HQ in this May 20, 2025 photo from DAPA. (Image: @Yonhap)

The KF-21 Boramae  fighter aircraft has officially entered its final assembly phase, the Korean Defense Acquisition Program Administration (DAPA) announced today.

According to DAPA, this phase involves integrating all external and internal components of the aircraft, followed by a series of performance evaluations and testing before the jet proceeds to flight trials.

Launched in 2015, the KF-21 development program aims to create an indigenous supersonic fighter to replace the Republic of Korea Air Force’s aging fleet of U.S.-made jets, such as the F-5.


Korean KF-21 Fighter jet's First Production Model Enters Final Assembly
KF-21 Boramae fighter aircraft. (Image for representation purposes only.)

Mass production of the KF-21 began in July last year after years of development and prototype testing.The first completed unit is expected to be delivered to the Air Force in the second half of 2026, with the project currently proceeding on schedule, according to DAPA.

The KF-21 is classified as a 4.5-generation fighter jet, equipped with advanced avionics and limited stealth capabilities.

In June 2023, Korea Aerospace Industries (KAI) signed a 1.96 trillion-won ($1.41 billion) contract with DAPA to produce 20 KF-21 jets by 2027. 

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