What happened
During an agricultural mission involving the distribution of superphosphate over hilly terrain, an aircraft was performing its seventh flight of the day. The operation was taking place at an airstrip situated 600 feet above mean sea level. According to an eyewitness positioned beneath the flight path, the aircraft was initially traveling in an east-north-east direction with no apparent issues. However, after a brief moment of distraction, the observer noted the aircraft had entered a steep, near-vertical dive with the upper wing surface visible. The aircraft subsequently collided with a hillside and caught fire.
Findings
Investigations into the wreckage showed no evidence of mechanical defects that could have caused the accident. Evidence from the propeller indicated that the engine was still running at the moment of impact. The aircraft was carrying its full load of superphosphate, and the emergency dump lever was found in the closed position; the dumping system was confirmed to be functional before the crash. Although the aircraft was heavily loaded, it was within the maximum weight limits specified in the flight manual.
While conditions at the airstrip were calm with a light north-easterly wind, the wind at the crash site—located 250 feet higher—was a moderate west-north-westerly. It is believed the aircraft encountered windshear and turbulence while approaching the ridgeline. This likely caused a loss of climb performance, prompting the pilot to attempt a turn to avoid the rising terrain. During this maneuver, the aircraft likely entered a stall, leading to the loss of control and subsequent impact.