Poti Airport Twin-Engine Aircraft Crash (CCCP-67190)

Incident Overview and Immediate Sequence of Events 14 seconds after liftoff from runway 10 at Poti Airport, the aircraft was climbing to a height of 60 meters at a speed of 195 km/h when both engines lost 60% of their power. Eleven seconds later, the left engine's power increased to 94.5%, while the right engine's power dropped to zero. The crew attempted to feather the right propeller, but this action was not possible. The aircraft subsequently lost altitude, began a descent, and turned slightly to the right. At a speed of 130 km/h, it struck trees 20 meters high and crashed in a wooded area located 450 meters past the runway end. The aircraft was destroyed. Six people, including two pilots and four passengers, were killed, and 12 other occupants were injured. ## Official Probable Cause The official investigation determined that the right-engine malfunction was the consequence of a short-term failure of the rotor speed regulator. This failure forced the crew to shut down the engine and attempt to feather the propeller. For unknown reasons, the propeller could not be feathered, causing drag that reduced the aircraft's speed and necessitating an emergency landing.