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NTSB Report
August 12, 1992 · Bell 47G-3B-1 · N2070P
West Mifflin, PA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
August 12, 1992
Injury Outcomes
No injuries (1 uninjured)
Location
West Mifflin, PA
Aircraft
Bell 47G-3B-1
Tail Number
N2070P
Operator
Raymond D Schuster
Injuries
None
Aircraft Damage
Substantial
NTSB Number
NYC92LA159
THE HELICOPTER WAS BEING REPOSITIONED ONTO A TRAILER WHEN THE TAIL SWUNG TO THE LEFT AND IMPACTED ON A DIRT BANK LOCATED 25 FEET FROM THE TRAILER. THE PILOT WAS UNABLE TO CONTROL THE HELICOPTER AND ATTEMPTED TO MAKE A LANDING. THE RIGHT SKID TOUCHED DOWN ON THE TRAILER AND AS THE HELICOPTER SETTLED, IT ROLLED OVER ON ITS LEFT SIDE. THE PILOT REPORTED THE RIGHT TURN WAS UNCONTROLLABLE; HOWEVER, POST ACCIDENT INVESTIGATION BY THE FAA REVEALED NO EVIDENCE OF MECHANICAL FAILURE OR MALFUNCTION. IN ADDITION THEY SAID, THE CONTINUITY OF THE CONTROL RODS AND CABLES TO THE TAIL ROTOR WAS UNABLE TO BE DETERMINED BECAUSE THE ENTIRE TAIL ASSEMBLY WAS SEPARATED FROM THE TAIL BOOM.
NTSB Probable Cause
A YAW FOR UNKNOWN REASON(S) WHICH RESULTED IN THE TAIL ROTOR CONTACTING THE DIRT BANK AND A LOSS OF CONTROL. A FACTOR RELATED TO THE ACCIDENT WAS THE DECISION OF THE PILOT TO OPERATE IN CLOSE VICINITY TO THE DIRK BANK.
Full Narrative
THE HELICOPTER WAS BEING REPOSITIONED ONTO A TRAILER WHEN THE TAIL SWUNG TO THE LEFT AND IMPACTED ON A DIRT BANK LOCATED 25 FEET FROM THE TRAILER. THE PILOT WAS UNABLE TO CONTROL THE HELICOPTER AND ATTEMPTED TO MAKE A LANDING. THE RIGHT SKID TOUCHED DOWN ON THE TRAILER AND AS THE HELICOPTER SETTLED, IT ROLLED OVER ON ITS LEFT SIDE. THE PILOT REPORTED THE RIGHT TURN WAS UNCONTROLLABLE; HOWEVER, POST ACCIDENT INVESTIGATION BY THE FAA REVEALED NO EVIDENCE OF MECHANICAL FAILURE OR MALFUNCTION. IN ADDITION THEY SAID, THE CONTINUITY OF THE CONTROL RODS AND CABLES TO THE TAIL ROTOR WAS UNABLE TO BE DETERMINED BECAUSE THE ENTIRE TAIL ASSEMBLY WAS SEPARATED FROM THE TAIL BOOM.
Flight
Event TypeAccident
Event Time19:00 EDT
Nearest AirportAllegheny County (0nm)
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBell 47G-3B-1
Tail NumberN2070P
Aircraft CategoryHeli
DamageSubstantial
OperatorRaymond D Schuster
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · TVO-435-B1A · Reciprocating · 270
Seats3
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 69 · Third Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility15 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter0
Weather SourcePILO