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NTSB Report
February 28, 1993 · Beech N35 · N1354Z
Fort Meade, FL
Overview
Report Status
Probable Cause
Event Type
Accident
Date
February 28, 1993
Injury Outcomes
No injuries (2 uninjured)
Location
Fort Meade, FL
Aircraft
Beech N35
Tail Number
N1354Z
Operator
Davis William W
Injuries
None
Aircraft Damage
Substantial
NTSB Number
MIA93LA077
DURING CRUISE FLIGHT, THE ENGINE EXPERIENCED A PARTIAL LOSS OF POWER. DURING THE DESCENT FOR A PRECAUTIONARY LANDING, THE ENGINE QUIT AND THE PROPELLER STOPPED. THE PILOT PERFORMED A FORCED LANDING ON A ROAD, AND DURING THE LANDING ROLL THE RIGHT WING COLLIDED WITH A ROAD SIGN. THE AIRPLANE VEERED TO THE RIGHT, COLLIDED WITH A FENCE THEN CAME TO REST. EXAMINATION OF THE ENGINE REVEALED THAT THE CRANKSHAFT FAILED NEAR THE REAR COUNTERWEIGHT. METALLURGICAL EXAMINATION REVEALED THAT IT FAILED DUE TO FATIGUE WHICH EMANATED FROM A SUBSURFACE ORIGIN. REVIEW OF THE ENGINE LOGBOOKS REVEALED THAT THE CRANKSHAFT WAS THE ORIGINAL WHEN THE ENGINE WAS MANUFACTURED ON APRIL 14, 1961. THE ENGINE HAD ACCUMULATED 4,032 HOURS TOTAL TIME, AND HAD BEEN OVERHAULED TWO TIMES, THE LATEST OCCURRING IN 1986. AT THAT TIME THE CRANKSHAFT WAS MAGNAFLUXED. THE ENGINE HAD ACCUMULATED 1,032 HOURS SINCE THE LATEST OVERHAUL.
NTSB Probable Cause
THE COLLISION WITH A ROAD SIGN DURING A FORCED LANDING. CONTRIBUTING TO THE ACCIDENT WAS THE TOTAL LOSS OF ENGINE POWER DUE TO FATIGUE FAILURE OF THE CRANKSHAFT.
Full Narrative
DURING CRUISE FLIGHT, THE ENGINE EXPERIENCED A PARTIAL LOSS OF POWER. DURING THE DESCENT FOR A PRECAUTIONARY LANDING, THE ENGINE QUIT AND THE PROPELLER STOPPED. THE PILOT PERFORMED A FORCED LANDING ON A ROAD, AND DURING THE LANDING ROLL THE RIGHT WING COLLIDED WITH A ROAD SIGN. THE AIRPLANE VEERED TO THE RIGHT, COLLIDED WITH A FENCE THEN CAME TO REST. EXAMINATION OF THE ENGINE REVEALED THAT THE CRANKSHAFT FAILED NEAR THE REAR COUNTERWEIGHT. METALLURGICAL EXAMINATION REVEALED THAT IT FAILED DUE TO FATIGUE WHICH EMANATED FROM A SUBSURFACE ORIGIN. REVIEW OF THE ENGINE LOGBOOKS REVEALED THAT THE CRANKSHAFT WAS THE ORIGINAL WHEN THE ENGINE WAS MANUFACTURED ON APRIL 14, 1961. THE ENGINE HAD ACCUMULATED 4,032 HOURS TOTAL TIME, AND HAD BEEN OVERHAULED TWO TIMES, THE LATEST OCCURRING IN 1986. AT THAT TIME THE CRANKSHAFT WAS MAGNAFLUXED. THE ENGINE HAD ACCUMULATED 1,032 HOURS SINCE THE LATEST OVERHAUL.
Flight
Event TypeAccident
Event Time17:50 EST
Nearest Airport0nm N
Runway0
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBeech N35
Tail NumberN1354Z
Aircraft CategoryAir
DamageSubstantial
OperatorDavis William W
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · IO-470N · Reciprocating · 260
Seats4
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 45 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind340° @ 4 kt
Visibility13 sm
CeilingBroken clouds 20000 ft
Temperature / Dew Point0 C / 0 C
Altimeter30.00 inHg
Observation Time22:50
Weather SourceWFAC