Tillamook Airport
Aircraft Accident/Incident Report

Tillamook, Oregon 97141
Wednesday, March 17, 2010 10:20 PDT

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that as he configured the airplane in a level attitude for cruise flight, the engine's rpm began to decrease and he applied carburetor heat with no effect noted. The pilot subsequently turned the airplane back towards the airport to land. As he approached the runway, he had raise the airplane's nose in an effort to avoid an airport perimeter fence. The airplane stalled and impacted soft terrain short of the runway. The airplane came to rest inverted; the aft fuselage and the vertical stabilizer were bent. A postaccident examination of the wreckage revealed no preimpact anomalies with the engine or airframe that would have prevented normal operation. The temperature and dewpoint at the time of the flight were both 45 degrees Fahrenheit. Plotting these temperatures on a carburetor icing chart indicated the conditions were conducive to serious icing at cruise power.

NTSB Probable Cause Narrative

The partial loss of engine power during climb to cruise due to carburetor icing and the pilot's delay in using carburetor heat.

Event Information

Type of Event Accident
Event Date 3/17/2010
Event Day of the Week Wednesday
Time of Event 1020
Event Time Zone Pacific Daylight Time
Event City Tillamook
Event State OREGON
Event Country --
Zipcode of the event site 97141
Event Date Year 2010
Event Date Month 3
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 452529N
Event Location Longitude 1234909W
Event Location Airport Tillamook Airport
Event Location Nearest Airport ID TMK
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 36
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1033 Pacific Daylight Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID TMK
Elevation of weather observation facility 36
Distance of event from weather observation facility (units?) --
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) 8
Dew Point at event time (in degress fahrenheit) 8
Wind Direction (degrees magnetic) --
Variable Wind Indicator Variable
Wind Speed (knots) --
Wind Velocity Indicator Light and Variable
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.57
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) 28309
NTSB Notification Source FAA ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Apr 27 2011 4:48PM
User who most recently changed record coos
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N7854F
NTSB Number WPR10LA168
Missing Aircraft Indicator --
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 CESSNA
Aircraft Model 150F
Aircraft Series Identifier --
Aircraft Serial Number 15063954
Certified Max Gross Weight 1600
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 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jan 2 2010 12:00AM
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type Unknown
Aircraft Owner Name TRUMAN DAVID MERLE
Aircraft Owner Street Address --
Aircraft Owner City BAY CITY
Aircraft Owner State OR
Aircraft Owner Country USA
Aircraft Owner Zipcode 97107-9708
Operator is an individual? Yes
Operator Name TRUMAN, DAVID MERLE
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City BAY CITY
Operator State OR
Operator Country USA
Operator Zip code 97107-9708
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 TMK
Departure City Tillamook
Departure State OR
Departure Country USA
Departure Time 1000
Departure Time Zone PDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code TMK
Destination City Tillamook
Destination State OR
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Apr 27 2011 4:49PM
User who most recently changed record coos
Since inspection or accident --
Event Location Runway Number and Location 13
Runway Length 5001
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --