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NTSB Report
May 31, 1985 · Bell 206-B · N1072Y
Fort Worth, TX
Overview
Report Status
Preliminary report
Event Type
Accident
Date
May 31, 1985
Injury Outcomes
1 injury (1 minor injury)
Location
Fort Worth, TX
Aircraft
Bell 206-B
Tail Number
N1072Y
Operator
Heli-Dyne Systems
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
FTW85LA241
THE ACFT WAS TAKING OFF ON A TEST FLT TO DETERMINE THE AFT C.G. LIMITS IN CONJUNCTION WITH AN STC MODIFICATION. AS THE ACFT WAS LIFTED OFF IN A FRONT SKIDS HIGH ATTITUDE, IT ENTERED AN UNCOMMANDED RIGHT ROLL. FULL LEFT CYCLIC WOULD NOT STOP THE ROLL AND THE ACFT ROLLED OVER. GUSTY WINDS AND MECHANICAL TURBULENCE FROM NEARBY BLDG'S CONTRIBUTED TO THE DYNAMIC ROLLOVER.
Full Narrative
THE ACFT WAS TAKING OFF ON A TEST FLT TO DETERMINE THE AFT C.G. LIMITS IN CONJUNCTION WITH AN STC MODIFICATION. AS THE ACFT WAS LIFTED OFF IN A FRONT SKIDS HIGH ATTITUDE, IT ENTERED AN UNCOMMANDED RIGHT ROLL. FULL LEFT CYCLIC WOULD NOT STOP THE ROLL AND THE ACFT ROLLED OVER. GUSTY WINDS AND MECHANICAL TURBULENCE FROM NEARBY BLDG'S CONTRIBUTED TO THE DYNAMIC ROLLOVER.
Flight
Event TypeAccident
Event Time16:05 CDT
Nearest AirportHELIDYNE (0nm N)
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBell 206-B
Tail NumberN1072Y
Aircraft CategoryHeli
DamageSubstantial
OperatorHeli-Dyne Systems
Operating RulePart 91
Engines1
Engine TypeTurboshaft
Engine DetailsAllison · 250-C20B · Turboshaft · 317
Seats5
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 61 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind130° @ 8 kt
Visibility10 sm
CeilingOvercast 25000 ft
Temperature / Dew Point61 F
Altimeter29.00 inHg
Observation Time20:54
Weather SourcePILO