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NTSB Report
October 15, 1988 · Arlington SISU 1A · N252JB
Borrego Springs, CA
Overview
Report Status
Preliminary report
Event Type
Accident
Date
October 15, 1988
Injury Outcomes
1 injury (1 fatality)
Location
Borrego Springs, CA
Aircraft
Arlington SISU 1A
Tail Number
N252JB
Operator
Beran Lynda G
Injuries
Fatal
Aircraft Damage
Substantial
NTSB Number
LAX89DUM01
WHILE THERMAL SOARING, THE ACFT ENTERED A STEEP SPINNING DESCENT, THREE TURNS TO THE RIGHT FOLLOWED BY TWO TURNS TO THE LEFT AND GROUND IMPACT IN A NEAR VERTICAL ATTITUDE. NO EVIDENCE WAS FOUND OF AIRCRAFT STRUCTURAL FAILURE OR CONTROL MALFUNCTION. THE PILOT'S PARTNER IN OWNERSHIP OF THE GLIDER AND LONG-TIME CLOSE FRIEND STATED THAT HE HAD INADVERTENTLY ENTERED A SPIN IN THE AIRCRAFT SEVERAL YEARS EARLIER. HE INDICATED THAT HE HAD TROUBLE RECOVERING FROM IT, SPEED BRAKES WERE INEFFECTIVE AND HE COULD NOT RECOVER FROM IT UNTIL FLAPS WERE RETRACTED AND THE CONTROL STICK WAS PUSHED FULL FORWARD. ALTHOUGH THE WRECKAGE WAS FOUND WITH THE SPEED BRAKES RETRACTED AND FLAPS EXTENDED ABOUT 10 DEGREES, BOTH SYSTEMS DISPLAYED SUBSTANTIAL DAMAGE AND IT COULD NOT BE DETERMINED WHAT THEIR PRE-IMPACT POSITIONS WERE.
Full Narrative
WHILE THERMAL SOARING, THE ACFT ENTERED A STEEP SPINNING DESCENT, THREE TURNS TO THE RIGHT FOLLOWED BY TWO TURNS TO THE LEFT AND GROUND IMPACT IN A NEAR VERTICAL ATTITUDE. NO EVIDENCE WAS FOUND OF AIRCRAFT STRUCTURAL FAILURE OR CONTROL MALFUNCTION. THE PILOT'S PARTNER IN OWNERSHIP OF THE GLIDER AND LONG-TIME CLOSE FRIEND STATED THAT HE HAD INADVERTENTLY ENTERED A SPIN IN THE AIRCRAFT SEVERAL YEARS EARLIER. HE INDICATED THAT HE HAD TROUBLE RECOVERING FROM IT, SPEED BRAKES WERE INEFFECTIVE AND HE COULD NOT RECOVER FROM IT UNTIL FLAPS WERE RETRACTED AND THE CONTROL STICK WAS PUSHED FULL FORWARD. ALTHOUGH THE WRECKAGE WAS FOUND WITH THE SPEED BRAKES RETRACTED AND FLAPS EXTENDED ABOUT 10 DEGREES, BOTH SYSTEMS DISPLAYED SUBSTANTIAL DAMAGE AND IT COULD NOT BE DETERMINED WHAT THEIR PRE-IMPACT POSITIONS WERE.
Flight
Event TypeAccident
Event Time13:30 PDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftArlington SISU 1A
Tail NumberN252JB
Aircraft CategoryGli
DamageSubstantial
OperatorBeran Lynda G
Operating RulePart 91
Engines0
Engine TypeUnknown
Engine DetailsUnknown
Seats1
People & Injuries
Injury Summary1 injury (1 fatality)
Fatal1
Serious0
Minor0
Uninjured0
Total1
Crew 1Age 40 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind120° @ 6 kt
Visibility35 sm
CeilingNone
Temperature / Dew Point54
Altimeter0
Weather SourceWIT