What happened
The aircraft was operating in support of aerial application duties when it experienced a catastrophic mechanical failure. A propeller blade failed while the plane was airborne, which immediately triggered an engine failure due to the resulting unbalanced forces within the propulsion system.
At the time of the incident, the aircraft was carrying a full load of agricultural chemicals. The pilot attempted to execute a forced landing at a nearby field. During the approach and touchdown phase, the aircraft impacted the ground with significant force, resulting in a hard landing that caused substantial damage to the airframe.
The investigation
Examination of the wreckage confirmed that the primary sequence of events began with the separation or failure of a propeller blade. This mechanical breakage disrupted the engine's operation through unbalanced forces, leading to a complete loss of power. The subsequent hard landing was a direct consequence of the pilot's attempt to manage the forced landing under these emergency conditions.
Findings
The investigation identified several critical factors contributing to the outcome:
- Propeller blade failure occurred in flight, initiating the chain of events.
- Engine failure resulted directly from the unbalanced forces generated by the damaged propeller.
- The aircraft was carrying a full agricultural chemical load, which added weight and complexity to the emergency landing scenario.
- The hard landing sustained significant damage to the aircraft structure upon impact with the ground.
The combination of in-flight mechanical failure and the heavy fuel/chemical load necessitated an emergency landing that could not be executed gently, leading to further structural compromise.