NTSB Identification: DEN07FA089.
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Accident occurred Sunday, April 29, 2007 in Castle Rock, CO
Probable Cause Approval Date: 08/30/2007
Aircraft: Schleicher Alexander GMBH ASH 26E, registration: N123KS
Injuries: 1 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.

According to several witnesses, the self-launching sailplane entered a turn to the left. During the turn, the left wing dropped and the sailplane dove towards the ground. Ground scars at the scene were consistent with a nose low, left wing low, impact attitude. An examination of the glider's systems revealed no anomalies. Thunderstorm activity existed along the route of flight. The pilot had not obtained a full weather briefing prior to the flight.

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

the pilot's failure to maintain aircraft control resulting in an inadvertent stall/mush.

Full narrative available

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