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NTSB Report
March 12, 1991 · Bartholomew Kolb Twinstar · N860RB
Bronson, FL
Overview
Report Status
Probable Cause
Event Type
Accident
Date
March 12, 1991
Injury Outcomes
1 injury (1 fatality)
Location
Bronson, FL
Aircraft
Bartholomew Kolb Twinstar
Tail Number
N860RB
Operator
Robert E Bartholomew
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
MIA91LA096
WITNESSES STATED THAT THE PILOT INITIATED THE FLIGHT KNOWING THAT THE AIRSPEED INDICATOR WAS INOPERATIVE. THEY OBSERVED THE AIRPLANE ON FINAL APPROACH WHEN IT ENTERED A STEEP LEFT 360-DEGREE TURN. THEY STATED THE LEFT WING STALLED AND THE AIRPLANE PITCHED NOSE DOWN AND CRASHED. EXAMINATION OF THE ENGINE, AIRPLANE AND FLIGHT CONTROLS REVEALED NO PREIMPACT FAILURES.
NTSB Probable Cause
PILOT-IN-COMMAND'S DECISION TO INITIATE A FLIGHT WITH KNOWN DEFICIENCIES IN HIS EQUIPMENT IN THAT HIS AIRSPEED INDICATOR WAS INOPERATIVE. HE THEN FAILED TO MAINTAIN AIRSPEED IN A TURN ON FINAL APPROACH, STALLED, AND CRASHED.
Full Narrative
WITNESSES STATED THAT THE PILOT INITIATED THE FLIGHT KNOWING THAT THE AIRSPEED INDICATOR WAS INOPERATIVE. THEY OBSERVED THE AIRPLANE ON FINAL APPROACH WHEN IT ENTERED A STEEP LEFT 360-DEGREE TURN. THEY STATED THE LEFT WING STALLED AND THE AIRPLANE PITCHED NOSE DOWN AND CRASHED. EXAMINATION OF THE ENGINE, AIRPLANE AND FLIGHT CONTROLS REVEALED NO PREIMPACT FAILURES.
Flight
Event TypeAccident
Event Time17:50 EST
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBartholomew Kolb Twinstar
Tail NumberN860RB
Aircraft CategoryAir
DamageDestroyed
OperatorRobert E Bartholomew
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsRotax · UNKNOWN · Reciprocating
Seats2
People & Injuries
Injury Summary1 injury (1 fatality)
Fatal1
Serious0
Minor0
Uninjured0
Total1
Crew 1Age 51 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind270° @ 9 kt
Visibility7 sm
CeilingBroken clouds 10000 ft
Temperature / Dew Point66 F / 39 C
Altimeter0
Observation Time22:50
Weather SourceWFAC