Incident Overview
A pilot reported that during a flight, his helicopter struck a power line. The impact destroyed the glass bubble of the aircraft. Believing that the damage was limited to the bubble, the pilot attempted to return to the departure airport.
Landing Difficulties
As the helicopter approached the airport for landing, the pilot encountered a control problem with the engine. The engine RPM became stuck on a high setting, preventing him from performing a normal autorotation. Consequently, the pilot landed the helicopter with both high vertical and forward speeds.
Damage Assessment
The helicopter sustained substantial damage during the landing. No other details regarding the aircraft type, registration, location, or injuries were provided in the account.