Aircraft Accident/Incident Report

Corbett, Oregon 97019
Monday, June 22, 1992 18:20 PDT

NTSB Narrative Summary Released at Completion of Accident

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 Narrative

THE FAILURE OF THE FLOAT ATTACH FITTING, AND THE SEPARATION OF THE FLOATS FROM THE AIRCRAFT.

Event Information

Type of Event Accident
Event Date 6/22/1992
Event Day of the Week Monday
Time of Event 1820
Event Time Zone Pacific Daylight Time
Event City CORBETT
Event State OREGON
Event Country --
Zipcode of the event site 97019
Event Date Year 1992
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation --
Weather Briefing Completeness Unknown
Investigator's weather source Pilot
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 20
Air Temperature at event time (in degrees celsius) 38
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 270
Variable Wind Indicator Unknown
Wind Speed (knots) 35
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 2591
NTSB Notification Source --
NTSB Notification Date Jun 22 1992 12:00AM
NTSB Notification Time 2000
Fiche Number and/or location -used to find docket information 47316
Date of most recent change to record Dec 11 2000 3:01PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N6470M
NTSB Number SEA92LA131
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name STINSON
Aircraft Model 108-3
Aircraft Series Identifier 108-3
Aircraft Serial Number 108-4470
Certified Max Gross Weight 2500
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Mar 24 1991 12:00AM
Airframe hours since last inspection 80
Airframe Hours 2000
ELT Installed Yes
ELT Activated Unknown
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name ANDERSON, ALLAN L.
Aircraft Owner Street Address 21771 SE FIRWOOD RD.
Aircraft Owner City SANDY
Aircraft Owner State OR
Aircraft Owner Country
Aircraft Owner Zipcode 97005
Operator is an individual? --
Operator Name ANDERSON, ALLAN L.
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 21771 SE FIRWOOD RD.
Operator City SANDY
Operator State OR
Operator Country
Operator Zip code 97005
Operator Code
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code
Departure City
Departure State
Departure Country
Departure Time 1830
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code 3S1
Destination City LAKE OSWEGO
Destination State OR
Destination Country
Specific Phase of Flight Climb
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --