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NTSB Report
October 28, 1991 · Bell 47D-1 · N925V
Rome, GA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
October 28, 1991
Injury Outcomes
No injuries (2 uninjured)
Location
Rome, GA
Aircraft
Bell 47D-1
Tail Number
N925V
Operator
Silver Hawk Aviation
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ATL92LA017
THE PILOT HAD COMPLETED TWO TRAFFIC PATTERNS AND DURING THE THIRD TAKEOFF FOR ANOTHER APPROACH THE FLIGHT INSTRUCTOR FELT A THUMP IN THE AIRFRAME. IMMEDIATELY, HE ENTERED AN AUTOROTATION AND LANDED IN A WOODED AREA. EXAMINATION OF THE HELICOPTER DISCLOSED THAT THE TAIL ROTOR GEARBOX AND TAIL ROTOR ASSEMBLIES WERE MISSING. ACCORDING TO THE OPERATOR BOTH ASSEMBLIES WERE RECOVERED THE FOLLOWING DAY, HOWEVER THE NTSB WAS NEVER NOTIFIED OF THE RECOVERY. THE DAMAGED COMPONENTS WERE EXAMINED BY THE OPERATOR AND DESTROYED. ACCORDING TO THE MECHANIC, ONE ROTOR BLADE FAILED IN THE VICINITY WHERE AD 59-05-10 APPLIED; THE AD REQUIRED A DAILY INSPECTION OF THE TAIL ROTOR BLADES FOR CRACKS. ACCORDING TO THE PILOT, AN INSPECTION OF THE BLADES HAD BEEN COMPLETED PRIOR TO THIS FLIGHT.
NTSB Probable Cause
THE FAILURE OF A TAIL ROTOR BLADE FOR UNDETERMINED REASONS.
Full Narrative
THE PILOT HAD COMPLETED TWO TRAFFIC PATTERNS AND DURING THE THIRD TAKEOFF FOR ANOTHER APPROACH THE FLIGHT INSTRUCTOR FELT A THUMP IN THE AIRFRAME. IMMEDIATELY, HE ENTERED AN AUTOROTATION AND LANDED IN A WOODED AREA. EXAMINATION OF THE HELICOPTER DISCLOSED THAT THE TAIL ROTOR GEARBOX AND TAIL ROTOR ASSEMBLIES WERE MISSING. ACCORDING TO THE OPERATOR BOTH ASSEMBLIES WERE RECOVERED THE FOLLOWING DAY, HOWEVER THE NTSB WAS NEVER NOTIFIED OF THE RECOVERY. THE DAMAGED COMPONENTS WERE EXAMINED BY THE OPERATOR AND DESTROYED. ACCORDING TO THE MECHANIC, ONE ROTOR BLADE FAILED IN THE VICINITY WHERE AD 59-05-10 APPLIED; THE AD REQUIRED A DAILY INSPECTION OF THE TAIL ROTOR BLADES FOR CRACKS. ACCORDING TO THE PILOT, AN INSPECTION OF THE BLADES HAD BEEN COMPLETED PRIOR TO THIS FLIGHT.
Flight
Event TypeAccident
Event Time14:50 EST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBell 47D-1
Tail NumberN925V
Aircraft CategoryHeli
DamageSubstantial
OperatorSilver Hawk Aviation
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsFranklin · 6VS-335-50 · Reciprocating · 210
Seats2
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 30 · Second Class
Conditions
ConditionsIMC
LightDaylight
Wind160° @ 9 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point54
Altimeter30.00 inHg
Observation Time18:50
Weather SourceWFAC