WPR11CA411
2011-08-28 · Warner Springs, California, United States · Serious · 1 aircraft · Status: Completed
Aircraft involved
Probable cause & findings
The pilot’s inadequate altitude to clear a ridgeline while maneuvering over a mountainous area.
Factual narrative
According to the pilot, his release from the tow plane was normal. The pilot released the tow rope at 7,100 feet mean sea level (msl) while over a 6,500-foot mean sea level (msl) mountaintop for a planned 1/2-hour sightseeing flight. Little to no indication of lift was noted in the area, and the pilot reversed course. When the glider had descended to 6,900 feet msl and was continuing to rapidly descend, the pilot again reversed course toward lower elevation terrain. The glider’s altitude was insufficient to clear a ridgeline. On the side of the mountain, about 6,400 feet msl, the glider impacted rocks, trees, and shrubs, which resulted in breakage of the glider’s wings, and serious injuries to the pilot. According to the pilot, his release from the tow plane was normal. He released the tow rope at 7,100 feet mean sea level (msl) while over a 6,500-foot msl mountaintop for a planned 1/2-hour sightseeing flight. Little to no indication of lift was noted in the area, and the pilot reversed course. When the glider had descended to 6,900 feet msl and was continuing to rapidly descend, the pilot again reversed course toward lower elevation terrain. The glider’s altitude was insufficient to clear a ridgeline. On the side of the mountain, about 6,400 feet msl, the glider impacted rocks, trees, and shrubs, which resulted in the glider’s wings breaking. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
FAA avdata. C = Cause, F = Factor.
- — Environmental issues-Conditions/weather/phenomena-(general)-(general)-Contributed to outcome
- C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Altitude-Attain/maintain not possible - C
- C Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C
Verbatim from NTSB's published report. Source file
NTSB_2011_WPR11CA411.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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