Training aircraft could be the first step, but let's remember that in the DPRK they are also creating a large drone,
therefore they could also create something more demanding in terms of size and war characteristics, such as a light fighter for example.
In the article concerning the visits to the factories, concerning the engine they write
<<Kim Jong Un also went to the factory manufacturing the engines of strategic cruise missile and armed unmanned aerial vehicle, and set forth important tasks. Noting that the factory has taken lion's share that can not be carried out by other factories in technical refinement and serial production of the newly developed strategic weapons, he specified the ways for steadily increasing the performance and reliability of the engine, a key element in the composition of weapon system, and rapidly expanding its production capacity. He stressed the need to simultaneously and thoroughly ensure the speed and quality and quantity in the production of engines by giving definite precedence to the measures for supplying various kinds of materials necessary for manufacturing engines, adding that the factory should put the production processes on a modern, scientific and precise basis of a higher level and steadily improve the labor and production conditions and civilized living environment of the factory. He requested the officials, workers and technicians of the factory to mass-produce various kinds of cutting-edge strategic weapon engines with their own efforts and technology by giving fullest play to their creative wisdom and enthusiasm and thus make a great contribution to bringing about a revolution in developing new strategic weapons of our style.>>
in addition to the TRDD-50/36MT indicated here in red, it also appears to identify a turboprop indicated in green
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and certainly a more powerful and high-performance engine for the maxi drone
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