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NTSB Report
August 5, 1982 · Piper J-3 · N70604
Near Big Lake, AK
Overview
Report Status
Preliminary report
Event Type
Incident
Date
August 5, 1982
Injury Outcomes
No injuries (2 uninjured)
Location
Near Big Lake, AK
Aircraft
Piper J-3
Tail Number
N70604
Operator
Stephen F Turner
Injuries
None
Aircraft Damage
Minor
NTSB Number
ANC82IA067
DURING CRUISE FLIGHT, THE AIRCRAFTS ENGINE LOST POWER AND BEGAN VIBRATING SEVERLY. AFTER THE PILOT TRIED UNSUCCESSFULLY TO REMEDY THE PROBLEM, HE EXECUTED AN EMERGENCY LANDING IN A MARSH. SHORTLY AFTER TOUCHDOWN THE AIRCRAFT BOGGED DOWN AND NOSED OVER. A TEARDOWN EXAMINATION OF THE ENGINE REVEALED THAT IT HAD EXPERIENCED AN INTERNAL FAILURE IN THE AREA OF THE #1 AND #2 CYLINDERS. WHILE THE EXACT MODE AND SEQUENCE OF FAILURE WAS NOT IDENTIFIED, EVIDENCE OF INADEQUATE LUBRICATION WAS OBSERVED.
Full Narrative
DURING CRUISE FLIGHT, THE AIRCRAFTS ENGINE LOST POWER AND BEGAN VIBRATING SEVERLY. AFTER THE PILOT TRIED UNSUCCESSFULLY TO REMEDY THE PROBLEM, HE EXECUTED AN EMERGENCY LANDING IN A MARSH. SHORTLY AFTER TOUCHDOWN THE AIRCRAFT BOGGED DOWN AND NOSED OVER. A TEARDOWN EXAMINATION OF THE ENGINE REVEALED THAT IT HAD EXPERIENCED AN INTERNAL FAILURE IN THE AREA OF THE #1 AND #2 CYLINDERS. WHILE THE EXACT MODE AND SEQUENCE OF FAILURE WAS NOT IDENTIFIED, EVIDENCE OF INADEQUATE LUBRICATION WAS OBSERVED.
Flight
Event TypeIncident
Event Time20:15 AHDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper J-3
Tail NumberN70604
Aircraft CategoryAir
DamageMinor
OperatorStephen F Turner
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · O-200A · Reciprocating · 100
Seats2
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 37 · Third Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility20 sm
CeilingNone
Temperature / Dew Point16 C / 0 C
Altimeter0