NTSB Identification: CHI00FA020.
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Accident occurred Monday, November 01, 1999 in COTTAGE GROVE, MN
Probable Cause Approval Date: 05/16/2001
Aircraft: Bell 206B, registration: N565KS
Injuries: 2 Fatal.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

The helicopter impacted terrain and was consumed by fire following a departure from cruise flight. Radar data indicated that the helicopter was proceeding on a heading of 103 degrees at an altitude of 1,300 feet msl and ground speed of 116 knots. Winds were from 280 degrees at 16 knots with gusts of 25 knots. Witnesses reported that the helicopter was proceeding eastbound at a low altitude and 'made a nose dive to the ground.' The main rotor blade and tail rotor assembly sustained damage consistent with a tail rotor strike in a nose high clockwise rotation. Examination of the engine and transmission did not reveal any mechanical anomalies.

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


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