KF-21 Succeeds in Breaking Sound Barrier Written 19 January 2023

KF-21-wiki

Prototype of the KF-21  | Credit: KF-21A; Wikipedia; CC BY-SA 4.0

Aviation Week reports that the Korea Aerospace Industries (KAI) KF-21 test-flight program “has passed another milestone as the aircraft reached Mach 1 for the first time since taking to the skies in July 2022.” This marks the first time a South Korean-built aircraft has broken the sound barrier.
Full Story (Aviation Week)