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NTSB Report
September 3, 1990 · Schempp-Hirth NIMBUS-2C · N39285
California City, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
September 3, 1990
Injury Outcomes
1 injury (1 fatality)
Location
California City, CA
Aircraft
Schempp-Hirth NIMBUS-2C
Tail Number
N39285
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
LAX90FA310
THE PILOT WAS PARTICIPATING IN A ROUND-ROBIN SOARING CHAMPIONSHIP CONTEST. WHEN THE GLIDER WAS ABOUT 2 MILES EAST OF THE FINISH LINE THE PILOT RADIOED THAT HE WAS INBOUND. WHEN THE GLIDER WAS ABOUT 1/4 OF A MILE EAST OF THE FINISH LINE WITNESSES OBSERVED ITS AIRSPEED APPEARED TO BE LESS THAN NORMAL. AFTER CROSSING THE FINISH LINE THE GLIDER ENTERED INTO A CLIMBING RIGHT TURN. WHEN THE GLIDER COMPLETED ABOUT A 180 DEGREE TURN, IT STALLED AND ENTERED INTO A SPIN. A GLIDER PILOT WHO OVERTOOK THE ACCIDENT GLIDER REPORTED THAT THE ACCIDENT PILOT BEGAN TO PREMATURELY DISPERSE HIS WATER BALLAST ABOUT 10 MILES EAST OF THE AIRPORT FINISH LINE.
NTSB Probable Cause
THE PILOT'S IMPROPER DECISION TO EXECUTE THE RAPID CLIMBING TURN MANEUVER AT AN INSUFFICIENT AIRSPEED. CONTRIBUTING TO THIS ACCIDENT WAS THE PREMATURE DUMPING OF THE GLIDER'S WATER BALLAST.
Full Narrative
THE PILOT WAS PARTICIPATING IN A ROUND-ROBIN SOARING CHAMPIONSHIP CONTEST. WHEN THE GLIDER WAS ABOUT 2 MILES EAST OF THE FINISH LINE THE PILOT RADIOED THAT HE WAS INBOUND. WHEN THE GLIDER WAS ABOUT 1/4 OF A MILE EAST OF THE FINISH LINE WITNESSES OBSERVED ITS AIRSPEED APPEARED TO BE LESS THAN NORMAL. AFTER CROSSING THE FINISH LINE THE GLIDER ENTERED INTO A CLIMBING RIGHT TURN. WHEN THE GLIDER COMPLETED ABOUT A 180 DEGREE TURN, IT STALLED AND ENTERED INTO A SPIN. A GLIDER PILOT WHO OVERTOOK THE ACCIDENT GLIDER REPORTED THAT THE ACCIDENT PILOT BEGAN TO PREMATURELY DISPERSE HIS WATER BALLAST ABOUT 10 MILES EAST OF THE AIRPORT FINISH LINE.
Flight
Event TypeAccident
Event Time17:35 PDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftSchempp-Hirth NIMBUS-2C
Tail NumberN39285
Aircraft CategoryGli
DamageDestroyed
Operating RulePart 91
Engines0
Engine TypeUnknown
Engine DetailsUnknown
Seats1
People & Injuries
Injury Summary1 injury (1 fatality)
Fatal1
Serious0
Minor0
Uninjured0
Total1
Crew 1Age 44 · Second Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility50 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter0
Weather SourceWIT