Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Saint Helens, Oregon 97051
Thursday, March 8, 2001 12:30 PST
NTSB Narrative Summary Released at Completion of Accident
While en route in conditions conducive to carburetor icing, the pilot noticed a reduction in the aircraft's exhaust gas temperature (EGT). Although he leaned the fuel mixture, this did not seem to increase the EGT to where he thought it should be. He therefore momentarily applied the carburetor heat and checked for a decrease in engine rpm, as is the proper procedure in an aircraft equipped with a fixed-pitch propeller. But since this aircraft was equipped with a constant-speed propeller, he should have checked for a drop in manifold pressure, which he did not do. Soon thereafter, the engine lost all power and the pilot descended to a forced landing in a soft wet field. Although the intentional gear-up touch-down was uneventful, as the aircraft slid across the field, it encountered a barbed wire fence. In a telephone interview after the accident, the pilot stated that he had been unaware that the proper procedure to use in checking for the accumulation of carburetor icing with a constant-speed propeller was to check manifold pressure drop. He was also not aware that as ice accumulated in the carburetor throat, resulting in a gradual reduction of power, that the propeller governor would keep the rpm constant as long as it was able to flatten the pitch of the propeller. He was also unaware that a drop in EGT may also be an indication of ice accumulating in the carburetor throat.
NTSB Probable Cause Narrative
the pilot's improper use of the carburetor heat while attempting to determine if there was ice accumulating in the carburetor throat. Factors include flight in conditions conducive to carburetor icing, and a fence running across the field in which the forced landing took place.
Event Information
| Type of Event | Accident |
| Event Date | 3/8/2001 |
| Event Day of the Week | Thursday |
| Time of Event | 1230 |
| Event Time Zone | Pacific Standard Time |
| Event City | Saint Helens |
| Event State | OREGON |
| Event Country | -- |
| Zipcode of the event site | 97051 |
| Event Date Year | 2001 |
| Event Date Month | 3 |
| 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 | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | -- |
| Weather Briefing Completeness | Full |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1253 Pacific Standard Time |
| Direction of event from weather observation facility (degrees) | 170 |
| Weather Observation Facility ID | KSPB |
| Elevation of weather observation facility | 58 |
| Distance of event from weather observation facility (units?) | 6 |
| Time Zone of the weather observation | PST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 2000 |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | -- |
| Sky Condition for Lowest Ceiling | Broken |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 8 |
| Air Temperature at event time (in degrees celsius) | 8 |
| Dew Point at event time (in degress fahrenheit) | 7 |
| Wind Direction (degrees magnetic) | 130 |
| 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) | 30.18 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Light |
| 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) | 10346 |
| NTSB Notification Source | Portland FSDO |
| NTSB Notification Date | Mar 8 2001 12:00AM |
| NTSB Notification Time | 1400 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Jul 30 2001 11:11AM |
| User who most recently changed record | MONR |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Portland FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N6337P |
| NTSB Number | SEA01LA063 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | Yes |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Piper |
| Aircraft Model | PA-24 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 24-1447 |
| 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 | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Sep 22 2000 12:00AM |
| Airframe hours since last inspection | 94 |
| Airframe Hours | 4600 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Walker's Crushing and Grading |
| Aircraft Owner Street Address | 601 South Pioneer Way, STE F145 |
| Aircraft Owner City | Moses Lake |
| Aircraft Owner State | WA |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 98837 |
| Operator is an individual? | No |
| Operator Name | Steven D. Talbot |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 601 South Pioneer Way, STE F145 |
| Operator City | Moses Lake |
| Operator State | WA |
| Operator Country | USA |
| Operator Zip code | 98837 |
| 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 | No |
| Departure Airport Code | HIO |
| Departure City | Hillsboro |
| Departure State | OR |
| Departure Country | USA |
| Departure Time | 1208 |
| Departure Time Zone | PST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | PAE |
| Destination City | Everett |
| Destination State | WA |
| Destination Country | USA |
| Specific Phase of Flight | Cruise - normal |
| Report sent to ICAO? | No |
| Evacuation occurred | No |
| Date of most recent change to record | May 1 2001 6:07PM |
| User who most recently changed record | STAM |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | -- |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |