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NTSB Report
April 20, 1990 · Bell 205A-1 · N67HJ
Moncks Corner, SC
Overview
Report Status
Probable Cause
Event Type
Accident
Date
April 20, 1990
Injury Outcomes
1 injury (1 fatality)
Location
Moncks Corner, SC
Aircraft
Bell 205A-1
Tail Number
N67HJ
Operator
Heli Jet
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
ATL90FA100
THE HELICOPTER WAS BEING USED FOR LOGGING USING AN EXTERNAL LIFT LONG LINE. A LOAD OF LOGS WAS RETURNED TO THE LOGGING LANE BECAUSE THEY WERE TOO HEAVY. AS THE HELICOPTER WAS BROUGHT TO A HOVER, & THE LOAD PICKLED, THE GROUND CREW OBSERVED THAT THE HELIOCPTER BECAME UNCONTROLLABLE. THE HELICOPTER NOSE PITCHED UP, IT ROLLED LEFT, & FELL TO THE GROUND FROM ABOUT 200 FEET. EXAM OF THE WRECKAGE REVEALED THAT NONE OF THE MAIN ROTOR PILLOW BLOCK BOLTS WERE PRESENT. DAMAGE TO THE MAIN ROTOR WAS CONSISTENT WITH A FAILURE OF ONE OF THE BOLTS, IN-FLIGHT, WHICH RESULTED IN SEPARATION OF THE MAIN ROTOR FROM THE MAST. LABORATORY EXAM OF THE MAIN ROTOR REVEALED THAT MFGRS OVERHAUL PROCEDURES WERE NOT FOLLOWED WHICH PROBABLY ALLOWED CORROSION OF THE BOLTS TO OCCUR. THE PROCEDURES WERE CHANGED TO PRECLUDE RE-USE OF PILLOW BLOCK BOLTS DURING OVERHAUL.
NTSB Probable Cause
THE IN-FLIGHT SEPARATION OF THE MAIN ROTOR BECAUSE OF THE FAILURE OF A PILLOW BLOCK BOLT, AND THE FAILURE OF THE OPERATOR/REPAIR STATION TO FOLLOW THE OVERHAUL PROCEDURES.
Full Narrative
THE HELICOPTER WAS BEING USED FOR LOGGING USING AN EXTERNAL LIFT LONG LINE. A LOAD OF LOGS WAS RETURNED TO THE LOGGING LANE BECAUSE THEY WERE TOO HEAVY. AS THE HELICOPTER WAS BROUGHT TO A HOVER, & THE LOAD PICKLED, THE GROUND CREW OBSERVED THAT THE HELIOCPTER BECAME UNCONTROLLABLE. THE HELICOPTER NOSE PITCHED UP, IT ROLLED LEFT, & FELL TO THE GROUND FROM ABOUT 200 FEET. EXAM OF THE WRECKAGE REVEALED THAT NONE OF THE MAIN ROTOR PILLOW BLOCK BOLTS WERE PRESENT. DAMAGE TO THE MAIN ROTOR WAS CONSISTENT WITH A FAILURE OF ONE OF THE BOLTS, IN-FLIGHT, WHICH RESULTED IN SEPARATION OF THE MAIN ROTOR FROM THE MAST. LABORATORY EXAM OF THE MAIN ROTOR REVEALED THAT MFGRS OVERHAUL PROCEDURES WERE NOT FOLLOWED WHICH PROBABLY ALLOWED CORROSION OF THE BOLTS TO OCCUR. THE PROCEDURES WERE CHANGED TO PRECLUDE RE-USE OF PILLOW BLOCK BOLTS DURING OVERHAUL.
Flight
Event TypeAccident
Event Time10:30 EDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBell 205A-1
Tail NumberN67HJ
Aircraft CategoryHeli
DamageDestroyed
OperatorHeli Jet
Operating RulePart 133
Engines1
Engine TypeTurboshaft
Engine DetailsLycoming · T53-13B · Turboshaft · 1400
Seats2
People & Injuries
Injury Summary1 injury (1 fatality)
Fatal1
Serious0
Minor0
Uninjured0
Total1
Crew 1Age 39 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind120° @ 8 kt, gusting 15 kt
CeilingNone
Temperature / Dew Point0 C
Altimeter29.89 inHg
Weather SourceWIT