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NTSB Report
June 12, 2012 · Stemme Gmbh & S10-VT · N921BR
Warner Springs, CA
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
June 12, 2012
Injury Outcomes
No injuries (2 uninjured)
Location
Warner Springs, CA
Aircraft
Stemme Gmbh & S10-VT
Tail Number
N921BR
Operator
George Klopfer
Injuries
None
Aircraft Damage
Substantial
NTSB Number
WPR12CA258
The pilot was undergoing a flight review in a glider. Before the flight review, the pilot had obtained several hours of instruction from the flight instructor. During the final phase of a normal approach and landing, the glider became unstable due to a left crosswind. The glider's left wing contacted the ground, which resulted in a ground loop. During the ground loop, the tail boom separated, the main landing gear collapsed, and the left wing was damaged. The pilot reported no preimpact mechanical malfunctions or failures that would have precluded normal operation.
NTSB Probable Cause
Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained - C
Full Narrative
The pilot was undergoing a flight review in a glider. His flight review had expired several years prior to the accident. Prior to the flight review, he had obtained several hours of instruction from the certified flight instructor. During the final phase of a normal approach and landing, the glider became unstable due to a left crosswind. The glider's left wing contacted the ground which resulted in a ground loop. During the ground loop, the tail boom separated, the main landing gear collapsed, and the left wing was damaged. The pilot reported no preimpact mechanical malfunctions with the glider that would have precluded normal operation.
Flight
Event TypeAccident
Event Time12:00 PDT
Nearest AirportWarner Springs Gliderport (0nm)
Runway26
Runway Length4700 ft
Runway Width70 ft
Flight Plan FiledUnknown
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftStemme Gmbh & S10-VT
Tail NumberN921BR
Aircraft CategoryGli
DamageSubstantial
OperatorGeorge Klopfer
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsRotax · 914 · Reciprocating · 110
Seats2
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 30 · Second Class · None
Crew 2Age 62 · Third Class · None
Conditions
ConditionsVMC
LightDaylight
Wind290° @ 8 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point57
Altimeter29.95 inHg
Observation Time18:53
Weather SourceWFAC