Incident Overview
A helicopter involved in contract power line patrol operations experienced an accident during a precautionary landing attempt. The incident occurred when the pilot observed an apparent partial power loss while executing a low altitude, low airspeed turn.
Sequence of Events
The pilot-in-command noted engine rpm indications between 2500 and 2600, with no needle split observed. Based on these readings, the pilot elected to attempt a precautionary landing. During the landing attempt, the helicopter's main rotor blades struck trees, and the aircraft subsequently rolled over upon impacting the ground.
Outcome
After the accident sequence, the engine operated normally. The helicopter sustained damage from the tree strike and ground impact.