What happened
During a daytime agricultural operation, the pilot encountered a partial loss of engine power while executing a descending turn. As the helicopter descended, the right skid struck a berm, causing the skid to shear off. This impact also resulted in the separation of the tail rotor cable.
Following these mechanical failures, the pilot lost control of the aircraft. The helicopter rolled onto its right side and came to rest on the ground. A fire broke out after the initial impact, and the helicopter was completely consumed by the flames.
The investigation
The investigation focused on the sequence of events leading to the loss of control and the subsequent destruction of the aircraft. Key findings included the shearing of the right skid upon contact with a berm and the separation of the tail rotor cable. The post-crash fire was identified as the primary cause of the total destruction of the helicopter.
Findings
The partial loss of engine power during the descending turn was a critical factor in the accident. The subsequent impact with the berm led to structural failures that compromised the pilot's ability to maintain control. The separation of the tail rotor cable further contributed to the loss of control, resulting in the helicopter rolling onto its right side.
Safety message
This incident highlights the importance of maintaining adequate engine power during agricultural operations, particularly when maneuvering in close proximity to terrain features such as berms. Pilots should be aware of the potential for structural damage and loss of control following such impacts.