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NTSB Report
February 26, 1983 · Bell 47G-2 · N5191B
Hardeeville, SC
Overview
Report Status
Preliminary report
Event Type
Accident
Date
February 26, 1983
Injury Outcomes
No injuries (2 uninjured)
Location
Hardeeville, SC
Aircraft
Bell 47G-2
Tail Number
N5191B
Operator
J D Turner Atlanta Helicop
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ATL83FA122
THE PLT STATED THAT HE NOTICED A PECULIAR PEDAL REACTION DURING A TURN-AROUND; HOWEVER, HE REPORTED THAT THIS MAY HAVE BEEN CAUSED BY THE WIND WHICH WAS GUSTING TO 15 KTS. SHORTLY AFTER COMPLETING THE TURN-AROUND, HE EXPERIENCED A COMPLETE LOSS OF TAIL ROTOR CONTROL. THE FAILURE WAS REALIZED BY A REDUCTION OF NOISE, AN RPM INCREASE & AYAW TO THE RIGHT. THIS OCCURRED AT AN ALTITUDE OF APRX 300 FT AGL. THE PLT WAS UNABLE TO MAINTAIN DIRECTIONAL CONTROL IN FLT, SO HE AUTOROTATED TO A NARROW LOGGING ROAD. WHILE DESCENDING TO LAND, THE MAIN ROTOR STRUCK TREES ON BOTH SIDES OF THE ROAD. DURING TOUCHDOWN. THE MAIN ROTOR STRUCK & SVERED THE TAIL BOOM. AN EXAM REVEALED THE TEETH ON THE FORWARD (SHORT) TAIL ROTOR DRIVE SHAFT, PN 47-644-180-9, WERE WORN & OVERHEATED. ALSO, THE MATCHING SPLINES ON THE FRONT COUPLING, PN 47-620-494-3, WERE OVERHEATED & STRIPPED. ONLY A MINIMAL AMOUNT OF LUBRICATION WAS FOUND IN THE FRONT COUPLING. THE BELL MAINTENANCE & OVERHAUL INSTRUCTIONS RECOMMENDED DAILY INSPECTIONS & LUBE EVERY 50 HRS.
Full Narrative
THE PLT STATED THAT HE NOTICED A PECULIAR PEDAL REACTION DURING A TURN-AROUND; HOWEVER, HE REPORTED THAT THIS MAY HAVE BEEN CAUSED BY THE WIND WHICH WAS GUSTING TO 15 KTS. SHORTLY AFTER COMPLETING THE TURN-AROUND, HE EXPERIENCED A COMPLETE LOSS OF TAIL ROTOR CONTROL. THE FAILURE WAS REALIZED BY A REDUCTION OF NOISE, AN RPM INCREASE & AYAW TO THE RIGHT. THIS OCCURRED AT AN ALTITUDE OF APRX 300 FT AGL. THE PLT WAS UNABLE TO MAINTAIN DIRECTIONAL CONTROL IN FLT, SO HE AUTOROTATED TO A NARROW LOGGING ROAD. WHILE DESCENDING TO LAND, THE MAIN ROTOR STRUCK TREES ON BOTH SIDES OF THE ROAD. DURING TOUCHDOWN. THE MAIN ROTOR STRUCK & SVERED THE TAIL BOOM. AN EXAM REVEALED THE TEETH ON THE FORWARD (SHORT) TAIL ROTOR DRIVE SHAFT, PN 47-644-180-9, WERE WORN & OVERHEATED. ALSO, THE MATCHING SPLINES ON THE FRONT COUPLING, PN 47-620-494-3, WERE OVERHEATED & STRIPPED. ONLY A MINIMAL AMOUNT OF LUBRICATION WAS FOUND IN THE FRONT COUPLING. THE BELL MAINTENANCE & OVERHAUL INSTRUCTIONS RECOMMENDED DAILY INSPECTIONS & LUBE EVERY 50 HRS.
Flight
Event TypeAccident
Event Time11:45 EST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBell 47G-2
Tail NumberN5191B
Aircraft CategoryHeli
DamageSubstantial
OperatorJ D Turner Atlanta Helicop
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · VO-435-A1F · Reciprocating · 260
Seats3
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 30 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind45° @ 10 kt, gusting 15 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point36 C / 0 C
Altimeter0
Observation Time16:45
Weather SourcePILO