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NTSB Report
September 26, 1991 · Burkhart Grob G103 · N4113G
Fremont, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
September 26, 1991
Injury Outcomes
No injuries (1 uninjured)
Location
Fremont, CA
Aircraft
Burkhart Grob G103
Tail Number
N4113G
Operator
Sky Soaring
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX91LA408
THE PILOT STATED THE ACCIDENT OCCURRED ON FINAL APPROACH TO THE AIRPORT. HE STATED HE MADE A NORMAL PATTERN ENTRY AND TURNED BASE AT THE STANDARD 45 DEGREE POINT. ON BASE, HE OPENED THE SPOILERS ABOUT 20%. AS HE TURNED FINAL AND LINED UP WITH THE RUNWAY, HE SAID HE COULD SEE THAT HIS GLIDE SLOPE WOULD TAKE HIM BEYOND THE WHITE LINE, AND WAS EXPECTING TO ADD MORE SPOILERS AS HE GOT CLOSER. THIS CHANGED ABRUPTLY, AS HE WAS CAUGHT IN A DOWNWASH CAUSED BY BUILDINGS ON THE APPROACH PATH. CLOSING THE DIVE BRAKES WAS OF LITTLE HELP. REALIZING HE COULD NOT MAKE THE ALTITUDE BACK, HE TURNED APPROXIMATELY 180 DEGREES TO THE RIGHT AND LANDED IN A SMALL ROUGH FIELD. DURING THE LANDING, THE RIGHT WING CAUGHT AND THE SAILPLANE GROUNDLOOPED.
NTSB Probable Cause
THE PILOT FAILED TO ADEQUATELY COMPENSATE FOR THE PREVAILING WIND CONDITIONS.
Full Narrative
THE PILOT STATED THE ACCIDENT OCCURRED ON FINAL APPROACH TO THE AIRPORT. HE STATED HE MADE A NORMAL PATTERN ENTRY AND TURNED BASE AT THE STANDARD 45 DEGREE POINT. ON BASE, HE OPENED THE SPOILERS ABOUT 20%. AS HE TURNED FINAL AND LINED UP WITH THE RUNWAY, HE SAID HE COULD SEE THAT HIS GLIDE SLOPE WOULD TAKE HIM BEYOND THE WHITE LINE, AND WAS EXPECTING TO ADD MORE SPOILERS AS HE GOT CLOSER. THIS CHANGED ABRUPTLY, AS HE WAS CAUGHT IN A DOWNWASH CAUSED BY BUILDINGS ON THE APPROACH PATH. CLOSING THE DIVE BRAKES WAS OF LITTLE HELP. REALIZING HE COULD NOT MAKE THE ALTITUDE BACK, HE TURNED APPROXIMATELY 180 DEGREES TO THE RIGHT AND LANDED IN A SMALL ROUGH FIELD. DURING THE LANDING, THE RIGHT WING CAUGHT AND THE SAILPLANE GROUNDLOOPED.
Flight
Event TypeAccident
Event Time12:55 PDT
Nearest AirportSky Soaring (0nm)
Runway28
Runway Length1900 ft
Runway Width200 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBurkhart Grob G103
Tail NumberN4113G
Aircraft CategoryGli
DamageSubstantial
OperatorSky Soaring
Operating RulePart 91
Engine TypeUnknown
Engine DetailsUnknown
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 74 · None
Conditions
ConditionsVMC
LightDaylight
Wind280° @ 15 kt
Visibility25 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourcePILO