What happened
A cargo transport operation flying from Japan toward Seoul experienced a catastrophic mechanical failure while traversing the airspace above the Daejeon region. During the flight, the left engine underwent an explosion, which subsequently caused the engine to separate from its mounting structure.
Following the loss of the engine, the crew initiated an emergency bailout procedure. The unmanned aircraft type plummeted toward the earth, ultimately impacting the ground approximately 10 km southeast of Daejeon. While the impact resulted in the total destruction of the airframe, there were zero fatalities among the occupants. All four crew members escaped the aircraft without sustaining injuries.
Findings
Investigations into the incident determined that the primary factor leading to the loss of control was the explosion of the left engine during the flight phase.