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NTSB Report
April 25, 1993 · Cessna TU206D · N72158
Culebra, PR
Overview
Report Status
Probable Cause
Event Type
Accident
Date
April 25, 1993
Injury Outcomes
2 injuries (1 fatality, 1 minor injury)
Location
Culebra, PR
Aircraft
Cessna TU206D
Tail Number
N72158
Operator
Florez Eusebio
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
MIA93FA109
DURING FLIGHT AT ABOUT 2000 FEET OVER WATER, A PARTIAL LOSS OF ENGINE POWER OCCURRED, FOLLOWED BY A TOTAL LOSS OF POWER. THE PILOT ATTEMPTED AN ENGINE RESTART WITH NEGATIVE RESULTS AND DITCHED AT THE MOUTH OF A BAY IN OCEAN WATERS. HE WAS FATALLY INJURED, BUT THE PASSENGER SUSTAINED ONLY MINOR INJURIES. THE AIRCRAFT WAS RECOVERED, AND AN EXAMINATION OF THE ENGINE REVEALED THE CRANKSHAFT HAD FAILED FROM FATIGUE CRACKING. FATIGUE HAD INITIATED AT A HEAT CHECK CRACK IN THE JOURNAL AT A POSITION ABOUT 0.2 INCH AFT OF THE #2 MAIN JOURNAL FORWARD FILLET & PROPAGATED THROUGH THE ADJACENT #4 CHEEK. THERE WAS EVIDENCE OF GALLING OF THE #2 MAIN JOURNAL BY CONTACT WITH THE ASSOCIATED BEARING, WHICH RESULTED IN HEAT CHECKS.
NTSB Probable Cause
FATIGUE FAILURE OF THE ENGINE CRANKSHAFT THAT ORIGINATED FROM A HEAT CHECK CRACK IN THE JOURNAL, ADJACENT TO THE #2 MAIN JOURNAL FORWARD FILLET.
Full Narrative
DURING FLIGHT AT ABOUT 2000 FEET OVER WATER, A PARTIAL LOSS OF ENGINE POWER OCCURRED, FOLLOWED BY A TOTAL LOSS OF POWER. THE PILOT ATTEMPTED AN ENGINE RESTART WITH NEGATIVE RESULTS AND DITCHED AT THE MOUTH OF A BAY IN OCEAN WATERS. HE WAS FATALLY INJURED, BUT THE PASSENGER SUSTAINED ONLY MINOR INJURIES. THE AIRCRAFT WAS RECOVERED, AND AN EXAMINATION OF THE ENGINE REVEALED THE CRANKSHAFT HAD FAILED FROM FATIGUE CRACKING. FATIGUE HAD INITIATED AT A HEAT CHECK CRACK IN THE JOURNAL AT A POSITION ABOUT 0.2 INCH AFT OF THE #2 MAIN JOURNAL FORWARD FILLET & PROPAGATED THROUGH THE ADJACENT #4 CHEEK. THERE WAS EVIDENCE OF GALLING OF THE #2 MAIN JOURNAL BY CONTACT WITH THE ASSOCIATED BEARING, WHICH RESULTED IN HEAT CHECKS.
Flight
Event TypeAccident
Event Time09:40 AST
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna TU206D
Tail NumberN72158
Aircraft CategoryAir
DamageDestroyed
OperatorFlorez Eusebio
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · TSIO-520-C · Reciprocating · 285
Seats2
People & Injuries
Injury Summary2 injuries (1 fatality, 1 minor injury)
Fatal1
Serious0
Minor1
Uninjured0
Total2
Crew 1Age 39 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind110° @ 11 kt
Visibility30 sm
CeilingOvercast 25000 ft
Temperature / Dew Point70 F
Altimeter30.00 inHg
Observation Time12:46
Weather SourceWFAC