Incident Overview
A pilot reported that during a cross-country flight in visual meteorological conditions, the ceiling decreased to 300 feet and visibility dropped to one-half mile in snow showers approximately 55 miles from the departure point. The temperature at that time was between 38 and 49 degrees Fahrenheit. The pilot engaged the engine anti-ice system.
Sequence of Events
After flying an additional 6 to 8 miles, the pilot noted the temperature was between 40 and 41 degrees and subsequently turned the engine anti-ice off. The front seat passenger checked the engine inlet area and reported seeing nothing unusual. Less than one minute later, the engine experienced a total loss of power. The pilot entered an autorotation and attempted to land in an open area. During the descent, the pilot had to apply collective pitch to clear trees, resulting in insufficient remaining collective pitch for a controlled touchdown, leading to a hard landing.
Post-Accident Examination
After the accident, the engine was started on scene. Under the supervision of an FAA safety inspector, the engine was also run through all power settings without difficulty at a test facility.
Pilot Statement on Equipment
The pilot reported that he did not have the engine air induction particle separator kit installed on the aircraft, as required by the Bell 206B flight manual. The manual also states that the engine anti-ice should be 'on' in visible moisture when the temperature is below 40 degrees Fahrenheit.