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NTSB Report
June 6, 1991 · Cessna 207A · N6255H
Eek, AK
Overview
Report Status
Probable Cause
Event Type
Accident
Date
June 6, 1991
Injury Outcomes
No injuries (6 uninjured)
Location
Eek, AK
Aircraft
Cessna 207A
Tail Number
N6255H
Operator
Kusko Aviation
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ANC91LA066
THE PILOT-IN-COMMAND STATED THAT THE FUEL FLOW BEGAN TO FLUCTUATE AND THE ENGINE BEGAN TO RUN ROUGH. HE SWITCHED FUEL TANKS AND THE ENGINE SMOOTHED OUT. HE THEN SWITCHED BACK TO THE ORIGINAL FUEL TANK AND HE STATED THE ENGINE OIL PRESSURE WENT TO ZERO AND THE ENGINE BEGAN TO VIBRATE. HE ELECTED TO SHUT DOWN THE ENGINE AND EXECUTE A FORCED LANDING. SUBSEQUENT EXAMINATION REVEALED THAT THE ENGINE OIL PUMP WAS WORKING, THAT THERE WAS A SUFFICIENT OIL QUANTITY IN THE ENGINE AND THAT THERE WAS WATER IN THE FULE INJECTOR DISTRIBUTOR.
NTSB Probable Cause
WAS FUEL CONTAMINATION. CONTRIBUTING FACTORS ARE THE ENGINE VIBRATIONS AND THE ROUGH VEGETATION UPON WHICH THE AIRPLANE LANDED.
Full Narrative
THE PILOT-IN-COMMAND STATED THAT THE FUEL FLOW BEGAN TO FLUCTUATE AND THE ENGINE BEGAN TO RUN ROUGH. HE SWITCHED FUEL TANKS AND THE ENGINE SMOOTHED OUT. HE THEN SWITCHED BACK TO THE ORIGINAL FUEL TANK AND HE STATED THE ENGINE OIL PRESSURE WENT TO ZERO AND THE ENGINE BEGAN TO VIBRATE. HE ELECTED TO SHUT DOWN THE ENGINE AND EXECUTE A FORCED LANDING. SUBSEQUENT EXAMINATION REVEALED THAT THE ENGINE OIL PUMP WAS WORKING, THAT THERE WAS A SUFFICIENT OIL QUANTITY IN THE ENGINE AND THAT THERE WAS WATER IN THE FULE INJECTOR DISTRIBUTOR.
Flight
Event TypeAccident
Event Time16:33 AKDT
Nearest AirportEEK (5nm ENE)
Runway0
Flight Plan FiledCvfr
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 207A
Tail NumberN6255H
Aircraft CategoryAir
DamageSubstantial
OperatorKusko Aviation
Operating RulePart 135
Engines1
Engine TypeReciprocating
Engine DetailsContinental · IO-520-F · Reciprocating · 300
Seats6
People & Injuries
Injury SummaryNo injuries (6 uninjured)
Fatal0
Serious0
Minor0
Uninjured6
Total6
Crew 1Age 47 · Second Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility30 sm
CeilingNone
Temperature / Dew Point55 / 0 C
Altimeter0
Weather SourcePILO