NTSB Identification: CHI05CA271.
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Accident occurred Thursday, September 15, 2005 in Elk Point, SD
Probable Cause Approval Date: 01/31/2006
Aircraft: Bell 206B, registration: N2995W
Injuries: 1 Uninjured.

NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.

The helicopter was damaged during a forced landing following an uncommanded right rotation after takeoff. The pilot stated that he departed from the shoreline of a river into a 2 to 3 mile per hour wind. He stated that when the helicopter was about 100 feet in altitude, 100 yards from the shore, and indicating over 50 miles per hour, a slight right turn was initiated. He stated that full left pedal input would not stop the right turn. The pilot elected to return to the shore. He stated that as he approached a flat area, he felt that he would not be able to reach the intended landing area and attempted to turn back toward the river. He said that the left rear skid contacted the sloping ground and the helicopter slid down the slope and came to rest on its left side. Examination of the helicopter subsequent to the accident failed to reveal any anomalies. Continuity of the tail rotor drive and control systems was confirmed. A maintenance record entry dated one day prior to the accident indicated that the tailboom had been replaced. Determination of proper rigging of the tail rotor could not be determined due to bending of the tail rotor control push-pull tubes from impact forces. The pilot reported unlimited visibility, a temperature of 70 degrees Fahrenheit, and south winds at 2 to 3 miles per hour.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

The loss of directional control for undetermined reasons which led to the pilot not being able to maintain clearance from the embankment during the forced landing. The rising embankment was a factor.

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