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NTSB Report
June 23, 1992 · Stinson 108-3 · N6470M
Corbett, OR
Overview
Report Status
Probable Cause
Event Type
Accident
Date
June 23, 1992
Injury Outcomes
No injuries (2 uninjured)
Location
Corbett, OR
Aircraft
Stinson 108-3
Tail Number
N6470M
Operator
Anderson Allan L
Injuries
None
Aircraft Damage
Substantial
NTSB Number
SEA92LA131
AFTER TAKING OFF FROM ROUGH WATER, AND CLIMBING TO ABOUT 200 FEET ABOVE THE RIVER, THE PILOT OF THE STINSON FLOATPLANE HEARD A LOUD POP IN THE RIGHT FRONT AREA OF THE AIRCRAFT. THIS WAS FOLLOWED BY A SEVERE VIBRATION, AND BY THE PILOT'S DECISION TO MAKE A PRECAUTIONARY LANDING. THE PILOT, WHO DID NOT REALIZE THAT THE FLOATS HAD SEPARATED FROM THE AIRPLANE, ATTEMPTED A NORMAL WATER LANDING, WHEREUPON THE AIRCRAFT FUSELAGE IMPACTED THE WATER AND ULTIMATELY SANK.
NTSB Probable Cause
THE FAILURE OF THE FLOAT ATTACH FITTING, AND THE SEPARATION OF THE FLOATS FROM THE AIRCRAFT.
Full Narrative
AFTER TAKING OFF FROM ROUGH WATER, AND CLIMBING TO ABOUT 200 FEET ABOVE THE RIVER, THE PILOT OF THE STINSON FLOATPLANE HEARD A LOUD POP IN THE RIGHT FRONT AREA OF THE AIRCRAFT. THIS WAS FOLLOWED BY A SEVERE VIBRATION, AND BY THE PILOT'S DECISION TO MAKE A PRECAUTIONARY LANDING. THE PILOT, WHO DID NOT REALIZE THAT THE FLOATS HAD SEPARATED FROM THE AIRPLANE, ATTEMPTED A NORMAL WATER LANDING, WHEREUPON THE AIRCRAFT FUSELAGE IMPACTED THE WATER AND ULTIMATELY SANK.
Flight
Event TypeAccident
Event Time18:20 PDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftStinson 108-3
Tail NumberN6470M
Aircraft CategoryAir
DamageSubstantial
OperatorAnderson Allan L
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · O-470-J · Reciprocating · 230
Seats4
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 61 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind270° @ 35 kt
Visibility20 sm
CeilingNone
Temperature / Dew Point10 C / 0 C
Altimeter0
Weather SourcePILO