NTSB Identification: CHI04CA289.
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Accident occurred Wednesday, September 29, 2004 in Custer, SD
Probable Cause Approval Date: 12/28/2004
Aircraft: Arganbright Vans RV-4, registration: N968MA
Injuries: 2 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 airplane was damaged when it departed the runway and struck an embankment during landing. The pilot stated that he was landing to the west and during the landing roll, the airplane suddenly veered to the right. He stated that he attempted to correct with rudder and brakes but was unable to keep the airplane from exiting the runway surface. The airplane subsequently struck an embankment. In his statement, the pilot stated that there were no mechanical problems with regard to the airplane. He also stated that he suspected that the winds from the canyon adjacent to the airport caused a wind shift at the point where the loss of control occurred. The reported winds were from 290 degrees at 9 knots.

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

The pilot's failure to maintain directional control during the landing. Factors were the sudden wind shift and the embankment.

Full narrative available

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