で話かね変わってL-39

CWって派生型があるようね。
要はFJ44-4M載せたL-39NGのStage 1バージョン

Aero concludes new contract for the modernization of Angolan L-39 aircraft
https://www.aero.cz/en/media/news/contract/

Vodochody, 4 May 2023 - Aero has signed a contract for the modernization and overhaul of four L-39 aircraft owned by Angola.
This is the first contracted upgrade of the L-39C with the new American engine, which is also used in Aero's new L-39NG aircraft.

In addition to the remotorization, the avionics equipment will be upgraded and the airframes will be overhauled.
The modernization is expected to start in the second half of this year.