NTSB Identification: WPR13LA007
14 CFR Part 91: General Aviation
Accident occurred Sunday, October 07, 2012 in Kamuela, HI
Probable Cause Approval Date: 11/06/2013
Aircraft: SCHLEICHER ASH25M, registration: N513WK
Injuries: 1 Serious.

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 reported that on the day of the accident the weather was marginal, with low clouds and shifting wind. He took off in the motorized glider and then stowed the engine. About 1 mile northwest of the airport, the pilot realized that the wind was not conducive to convective activity, and the glider started to descend. The pilot turned back toward the airport and extended the engine/propeller to restart the engine; however, the engine would not start. The pilot entered the downwind leg of the traffic pattern and lowered the landing gear. As the pilot was turning from the downwind to the base leg of the traffic pattern, the left wing of the glider stalled; the glider subsequently impacted the ground and cart-wheeled before coming to a rest in a field. The pilot reported that there were no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation. The pilot reported that he believed the accident occurred because "everything happened so fast,” and he was unable to use a checklist.

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

The pilot’s failure to maintain control of the glider after it encountered atmospheric conditions while maneuvering where the lift was not sufficient to maintain flight, which resulted in a stall and impact with terrain during the subsequent approach to land.

Full narrative available

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