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NTSB Report
September 17, 1984 · Cessna 152 II · N94505
Skwentna, AK
Overview
Report Status
Preliminary report
Event Type
Accident
Date
September 17, 1984
Injury Outcomes
No injuries (2 uninjured)
Location
Skwentna, AK
Aircraft
Cessna 152 II
Tail Number
N94505
Operator
Alaska Aviation School
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ANC84LA181
FBO HAD BEEN EXPERIENCING DIFFICULTIES WITH SPARK PLUGS AND MAGNETOS IN THIS ACFT. THE PLT HAD FLOWN THIS ACFT BEFORE WITH RECURRENT ROUGH RUNNING AND DIMINISHED POWER SYMPTOMS. ENG BEGAN TO RUN ROUGH ON THIS FLT AND PLT LANDED ON A SAND BAR (MARKED FOR ACFT USE) TO CHECK IGNITION LEADS AND FUEL FOR CONTAMINATION. ON TAKEOFF, TOTAL POWER LOSS WAS EXPERIENCED AS THE ACFT REACHED ABOUT 2O FT AGL. PLT DITCHED THE ACFT IN THE RIVER. INVESTIGATION REVEALED THE MAGNETO BEARINGS WERE SEIZED. SERVICE BULLETIN RECOMMENDING REPLACEMENT OF BEARINGS HAD NOT BEEN COMPLIED WITH.
Full Narrative
FBO HAD BEEN EXPERIENCING DIFFICULTIES WITH SPARK PLUGS AND MAGNETOS IN THIS ACFT. THE PLT HAD FLOWN THIS ACFT BEFORE WITH RECURRENT ROUGH RUNNING AND DIMINISHED POWER SYMPTOMS. ENG BEGAN TO RUN ROUGH ON THIS FLT AND PLT LANDED ON A SAND BAR (MARKED FOR ACFT USE) TO CHECK IGNITION LEADS AND FUEL FOR CONTAMINATION. ON TAKEOFF, TOTAL POWER LOSS WAS EXPERIENCED AS THE ACFT REACHED ABOUT 2O FT AGL. PLT DITCHED THE ACFT IN THE RIVER. INVESTIGATION REVEALED THE MAGNETO BEARINGS WERE SEIZED. SERVICE BULLETIN RECOMMENDING REPLACEMENT OF BEARINGS HAD NOT BEEN COMPLIED WITH.
Flight
Event TypeAccident
Event Time18:30 AKDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 152 II
Tail NumberN94505
Aircraft CategoryAir
DamageSubstantial
OperatorAlaska Aviation School
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-235-N2C · Reciprocating · 108
Seats2
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 25 · Third Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility90 sm
CeilingNone
Temperature / Dew Point64 F / 0 C
Altimeter29.00 inHg
Weather SourcePILO