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NTSB Report
February 9, 1989 · Cessna U206G · N756EA
Fairbanks, AK
Overview
Report Status
Probable Cause
Event Type
Accident
Date
February 9, 1989
Injury Outcomes
1 injury (1 fatality)
Location
Fairbanks, AK
Aircraft
Cessna U206G
Tail Number
N756EA
Operator
Arctic Circle Air Service
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
ANC89FA041
DURING FLIGHT, THE PILOT REPORTED AN ENGINE FAILURE. SUBSEQUENTLY, THE AIRPLANE CRASHED AS IT WAS LANDED IN A STAND OF PINE TREES. AN EXAM OF THE ENGINE REVEALED THAT ONE OF THE REAR TORSION VIBRATION DAMPERS HAD SEPARATED FROM THE CRANKSHAFT BOSS. THERE WAS EVIDENCE THAT THIS RESULTED IN MASSIVE INTERNAL ENGINE DAMAGE & A SUBSEQUENT LOSS OF POWER.
NTSB Probable Cause
SEPARATION OF THE TORSIONAL VIBRATION DAMPERS FROM THE CRANKSHAFT BOSS.
Full Narrative
DURING FLIGHT, THE PILOT REPORTED AN ENGINE FAILURE. SUBSEQUENTLY, THE AIRPLANE CRASHED AS IT WAS LANDED IN A STAND OF PINE TREES. AN EXAM OF THE ENGINE REVEALED THAT ONE OF THE REAR TORSION VIBRATION DAMPERS HAD SEPARATED FROM THE CRANKSHAFT BOSS. THERE WAS EVIDENCE THAT THIS RESULTED IN MASSIVE INTERNAL ENGINE DAMAGE & A SUBSEQUENT LOSS OF POWER.
Flight
Event TypeAccident
Event Time04:05 AKST
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledCvfr
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna U206G
Tail NumberN756EA
Aircraft CategoryAir
DamageDestroyed
OperatorArctic Circle Air Service
Operating RulePart 135
Engines1
Engine TypeReciprocating
Engine DetailsContinental · IO-520-F · Reciprocating · 300
Seats6
People & Injuries
Injury Summary1 injury (1 fatality)
Fatal1
Serious0
Minor0
Uninjured0
Total1
Crew 1Age 27 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind180° @ 5 kt
Visibility90 sm
CeilingBroken clouds 6000 ft
Temperature / Dew Point30 C / 0 C
Altimeter30.00 inHg
Weather SourceWIT