NTSB Identification: CHI99LA334.
The docket is stored in the Docket Management System (DMS). Please contact Records Management Division
Accident occurred Thursday, September 09, 1999 in NEKOOSA, WI
Probable Cause Approval Date: 11/30/2000
Aircraft: Bell 206B, registration: N4010G
Injuries: 2 Minor.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

The pilot said he took off from the southeast side of a building and flew west. He stated he turned and flew north. He turned right and flew to the east. He said he 'experienced a hard gust of wind on my tail, causing the aircraft to enter a right spin.' He applied full left rudder and the helicopter did not stop its spinning. He stated he lowered 'the nose in an attempt to fly out of the spin, but to no avail again.' The pilot stated, 'I would need to attempt an auto-rotation to a safe landing.' He said that the 'landing was hard and the tail spun and hit two cars in the parking lot.' The pass was done in slow cruise. The pilot reported no preimpact mechanical failures or malfunctions. The pilot checked wind before the flight. The wind was 270 degrees at 15 knots.

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

the pilot's inadequate compensation for wind gusts. Factors were the wind gusts and the two vehicles parked nearby.

Full narrative available

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