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NTSB Report
August 9, 1992 · Rockwell 112-TC · N4531W
St Mary'S, WV
Overview
Report Status
Probable Cause
Event Type
Accident
Date
August 9, 1992
Injury Outcomes
1 injury (1 minor injury)
Location
St Mary'S, WV
Aircraft
Rockwell 112-TC
Tail Number
N4531W
Operator
Sherman D Taffel
Injuries
Minor
Aircraft Damage
Destroyed
NTSB Number
NYC92LA151
THE PILOT SAID, 'WHILE CRUSING AT 9500 FEET...THERE WAS A 'BOOM'...I REALIZED...THE ENGINE JUST BLEW...' DURING THE FORCED LANDING, THE AIRPLANE STRUCK A HOUSE. EXAMINATION OF THE MAINTENANCE RECORDS REVEALED THAT THERE HAD BEEN TWO PROPELLER STRIKES WITH THIS AIRPLANE. AN EXAMINATION OF THE ENGINE REVEALED NO MALFUNCTION OR DEFECT WHICH WOULD HAVE CONTRIBUTED TO THE FAILURE. THE PROPELLER BLADE HUB ASSEMBLY WAS EXAMINED BY THE NTSB METALLURGIST. IN HIS REPORT HE STATED: 'THE HUB FAILED AS A RESULT OF FATIGUE CRACKING....THE ORIGIN OF THE FATIGUE WAS NOT LOCATED ON A PART OF THE HUB THAT WAS RECOVERED. DAMAGE TO THE PRELOAD PLATE SHELF...INDICATED THAT THE HUB HAD PREVIOUSLY EXPERIENCED A BLADE STRIKE....THE GROUND STRIKE COULD HAVE HAD AN AFFECT ON THE FAILURE OF THE HUB, BUT WITHOUT THE ORIGIN AREA FOR EXAMINATION OTHER...CAUSES...CANNOT BE RULED OUT.'
NTSB Probable Cause
THE FATIGUE CRACKING FRACTURE OF THE PROPELLER HUB, RESULTING IN A FORCED LANDING, AND COLLISION WITH A HOUSE.
Full Narrative
THE PILOT SAID, 'WHILE CRUSING AT 9500 FEET...THERE WAS A 'BOOM'...I REALIZED...THE ENGINE JUST BLEW...' DURING THE FORCED LANDING, THE AIRPLANE STRUCK A HOUSE. EXAMINATION OF THE MAINTENANCE RECORDS REVEALED THAT THERE HAD BEEN TWO PROPELLER STRIKES WITH THIS AIRPLANE. AN EXAMINATION OF THE ENGINE REVEALED NO MALFUNCTION OR DEFECT WHICH WOULD HAVE CONTRIBUTED TO THE FAILURE. THE PROPELLER BLADE HUB ASSEMBLY WAS EXAMINED BY THE NTSB METALLURGIST. IN HIS REPORT HE STATED: 'THE HUB FAILED AS A RESULT OF FATIGUE CRACKING....THE ORIGIN OF THE FATIGUE WAS NOT LOCATED ON A PART OF THE HUB THAT WAS RECOVERED. DAMAGE TO THE PRELOAD PLATE SHELF...INDICATED THAT THE HUB HAD PREVIOUSLY EXPERIENCED A BLADE STRIKE....THE GROUND STRIKE COULD HAVE HAD AN AFFECT ON THE FAILURE OF THE HUB, BUT WITHOUT THE ORIGIN AREA FOR EXAMINATION OTHER...CAUSES...CANNOT BE RULED OUT.'
Flight
Event TypeAccident
Event Time12:35 EDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftRockwell 112-TC
Tail NumberN4531W
Aircraft CategoryAir
DamageDestroyed
OperatorSherman D Taffel
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · TO-360-C1A6D · Reciprocating · 210
Seats4
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 47 · Second Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility75 sm
CeilingNone
Temperature / Dew Point68 F
Altimeter30.00 inHg
Weather SourcePILO