NTSB Identification: CHI05CA184.
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Accident occurred Thursday, July 14, 2005 in Oshkosh, WI
Probable Cause Approval Date: 06/28/2006
Aircraft: Hirsch RV-6A, registration: N125WH
Injuries: 1 Minor.
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 amateur-built airplane was substantially damaged during takeoff when it departed the turf runway and impacted a fence. The pilot reported that he initiated a short field takeoff. Approximately 100 feet into the takeoff roll the airplane encountered "bumps" in the runway surface. He stated that after traveling another 100 feet, the airplane was "propelled 5-6 feet into the air" but that it did not have sufficient airspeed to maintain flight at that time. He stated that as the airplane settled back onto the runway, it began to "porpoise over the next several ridges" for a distance of approximately 100 feet. The pilot reported: "At that time the aircraft suddenly veered left and I pulled the throttle to idle. It went into the high grass along the runway and struck the fence with the left wing." The airplane subsequently ground looped and came to rest.
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 takeoff. Contributing factors were the uneven (rough) runway surface and the fence. Full narrative available
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