Colville Municipal Airport
Aircraft Accident/Incident Report

Colville, Washington 99114
Saturday, April 23, 2011 13:00 PDT

NTSB Narrative Summary Released at Completion of Accident

After takeoff, the pilot raised the landing gear and flaps and manually manipulated the turbocharger. As he was adjusting the turbocharger, the engine power reduced to idle, surged to full power, and then reduced back to idle. To avoid obstacles at the end of the runway, the pilot pushed the flight controls forward and landed the airplane on the remaining runway. During the hard landing, the amphibious landing gear collapsed, which resulted in substantial damage to the airplane. A postaccident examination of the engine and related systems revealed no mechanical malfunctions or failures that would have precluded normal operation. Fuel was found on board the airplane, and no evidence of fuel contamination was found. The reason for the partial loss of engine power could not be determined.

NTSB Probable Cause Narrative

The partial loss of engine power during takeoff for reasons that could not be determined because postaccident examination revealed no mechanical malfunctions or failures that would have precluded normal operation.

Event Information

Type of Event Accident
Event Date 4/23/2011
Event Day of the Week Saturday
Time of Event 1300
Event Time Zone Pacific Daylight Time
Event City Colville
Event State WASHINGTON
Event Country --
Zipcode of the event site 99114
Event Date Year 2011
Event Date Month 4
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 483238N
Event Location Longitude 1175302W
Event Location Airport Colville Municipal Airport
Event Location Nearest Airport ID 63S
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 1882
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1253 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 150
Weather Observation Facility ID DEW
Elevation of weather observation facility 2211
Distance of event from weather observation facility (units?) 39
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) 11
Dew Point at event time (in degress fahrenheit) -3
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator Calm
Wind Gust Indicator --
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.97
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 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 32799
NTSB Notification Source FAA AMN Operations Center
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record May 5 2014 2:42PM
User who most recently changed record cort
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8435T
NTSB Number WPR11LA209
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name CESSNA
Aircraft Model 182B
Aircraft Series Identifier --
Aircraft Serial Number 52335
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 4
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Nov 1 2010 12:00AM
Airframe hours since last inspection 30
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type Unknown
Aircraft Owner Name GHL INC
Aircraft Owner Street Address --
Aircraft Owner City Anchorage
Aircraft Owner State AK
Aircraft Owner Country USA
Aircraft Owner Zipcode 99517
Operator is an individual? No
Operator Name George Thomas
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City Anchorage
Operator State AK
Operator Country USA
Operator Zip code 99517
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? --
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 63S
Departure City Colville
Departure State WA
Departure Country USA
Departure Time 1300
Departure Time Zone PDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code 63S
Destination City Colville
Destination State WA
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Apr 30 2014 8:49PM
User who most recently changed record cort
Since inspection or accident --
Event Location Runway Number and Location 19
Runway Length 2695
Runway Width 40
Sight Seeing flight No
Air Medical Flight No
Medical Flight --