Will Rogers Wiley Post Airport
Aircraft Accident/Incident Report

Renton, Washington 98055
Sunday, September 19, 2010 15:30 PDT

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that he performed a preflight inspection and then began to taxi the airplane from the seaplane base to the departure area. He reported encountering a heavy rain shower during taxi, with wind out of the south between 4-6 knots. The air traffic control tower cleared the pilot for a westbound departure; however, he elected to continue with a crosswind takeoff. The pilot applied left-wing-down aileron control inputs as he applied engine power. As the airplane accelerated, it began a drift to the left. The pilot reported that he was unable to stop the drift with the application of full right rudder, and that during this time he may have inadvertently relaxed the aileron control input. The pilot elected to abort the takeoff, and as he reduced engine power the right wing struck the water; the airplane incurred substantial damage to the wing spar and aileron during the impact sequence. The pilot reported no preimpact mechanical malfunction or failures.

NTSB Probable Cause Narrative

The pilot's failure to maintain directional control of the float-equipped airplane during an aborted water takeoff, resulting in a dragged wing.

Event Information

Type of Event Accident
Event Date 9/19/2010
Event Day of the Week Sunday
Time of Event 1530
Event Time Zone Pacific Daylight Time
Event City Renton
Event State WASHINGTON
Event Country --
Zipcode of the event site 98055
Event Date Year 2010
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 473105n
Event Location Longitude 1221305w
Event Location Airport Will Rogers Wiley Post
Event Location Nearest Airport ID W36
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport --
Airport Elevation 14
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1553 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 180
Weather Observation Facility ID RNT
Elevation of weather observation facility 32
Distance of event from weather observation facility (units?) 2
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 19
Dew Point at event time (in degress fahrenheit) 14
Wind Direction (degrees magnetic) 190
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 6
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.74
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 27608
NTSB Notification Source FAA NWM ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Oct 7 2010 4:42PM
User who most recently changed record coos
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N24150
NTSB Number WPR10CA461
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed Unknown
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name DEHAVILLAND
Aircraft Model BEAVER DHC-2 MK.1
Aircraft Series Identifier --
Aircraft Serial Number 1259
Certified Max Gross Weight --
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 8
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Oct 22 2009 12:00AM
Airframe hours since last inspection --
Airframe Hours 5066
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type C91-A
Aircraft Owner Name Benjamin L Ellison
Aircraft Owner Street Address --
Aircraft Owner City Bellevue
Aircraft Owner State WA
Aircraft Owner Country USA
Aircraft Owner Zipcode 98004-6515
Operator is an individual? Yes
Operator Name Martin D Ellison
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Bellevue
Operator State WA
Operator Country USA
Operator Zip code 98004-6515
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation --
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 RNT
Departure City Renton
Departure State WA
Departure Country USA
Departure Time 1530
Departure Time Zone PDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code RNT
Destination City Renton
Destination State WA
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Oct 7 2010 4:39PM
User who most recently changed record coos
Since inspection or accident Time of Accident
Event Location Runway Number and Location 30
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --