Probable cause
The pilot’s encounter with atmospheric conditions where the lift was not sufficient to maintain flight, which resulted in a collision with terrain.
NTSB analysis
The glider pilot reported that he partially extended the wing spoilers and completed a pre-landing checklist while on left base for his intended destination airport. Shortly after, the glider encountered “significant sinking air” and started a descent. He then maneuvered the glider directly towards the runway and stowed the wing spoilers to extend his glide for a precautionary landing. Subsequently, the glider impacting terrain short of the runway, which resulted in substantial damage to the nose of the glider.
The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.
Text from the NTSB. Open the NTSB docket for WPR23LA245 for the full record.
Event
- Date
- Jun 26, 2023
- Type
- Accident
- Place
- Williams, California
- Nearest airport
- Williams (CN12)
- Highest injury
- None
- Weather
- Visual (VMC)
- Light
- Day
Schleicher Alexander Gmbh & Co ASH 26 E
- N-number
- N26DX
- Category
- Glider
- Year built
- 2007
- Damage
- Substantial
- Operating rule
- Part 91 (general aviation)
- Purpose of flight
- Personal
From the NTSB aviation accident database: N-registered aircraft, events since 2008, data through Oct 28, 2026. The file is published monthly, so the latest weeks are incomplete and recent records can change. The official source is the NTSB aviation investigation search. CheckAero is independent and not affiliated with the NTSB.