Accident Overview
On 7 June 2002, a Hughes 269C helicopter, registration ZS-HEP, was involved in an accident at Borokalalo Game Reserve in the Rustenburg area. The aircraft was being used for a game capture operation. The pilot, who held a Private Pilot License with a total flying experience of 385.0 hours (including 159.7 hours on type), was the sole occupant.
Sequence of Events
While flying at approximately 150 feet above ground level, the pilot initiated a sharp right turn. During the turn, the engine misfired, causing severe airframe vibrations. The engine continued to run roughly. Recognizing a problem, the pilot elected to perform a precautionary landing. While turning into wind, the pilot perceived that the engine had failed. During the subsequent forced landing in dense bush, the main rotor blades struck surrounding trees, resulting in substantial damage to the aircraft.
Injuries and Damage
The pilot was not injured. The helicopter sustained substantial damage due to impact with trees and terrain.
Meteorological Information
Weather conditions were reported as fine at the time of the accident.
Probable Cause
During an engine bench test run conducted after the accident, no malfunction could be detected that would have caused the engine to fail. However, the possibility of fuel contamination could not be excluded.