Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Stanwood, Washington 98292
Thursday, February 19, 1998 9:00 PST
NTSB Narrative Summary Released at Completion of Accident
The pilot reported that while engaged in aerial spraying, approximately 30 minutes after takeoff and 15 minutes after beginning to spray, he noted a reduction in engine power. He advanced the throttle, at which point the engine 'sputtered' and 'popped' a few times and then quit. The pilot performed a forced landing into a field. The airplane encountered soft terrain during the forced landing roll and flipped over. The pilot stated he did not use carburetor heat at the time. Post-accident examination of the engine did not reveal any abnormalities, and the operator successfully test-ran the engine following the accident. Temperatures of 7 to 9 degrees C and dewpoint of 6 degrees C were reported at two nearby weather reporting stations during the accident time frame. This temperature/dewpoint combination represents a hazard of 'serious [carburetor] icing at cruise power', according to FAA data.
NTSB Probable Cause Narrative
The pilot's failure to apply carburetor heat. Factors included carburetor icing conditions and soft terrain in the forced landing area.
Event Information
| Type of Event | Accident |
| Event Date | 2/19/1998 |
| Event Day of the Week | Thursday |
| Time of Event | 900 |
| Event Time Zone | Pacific Standard Time |
| Event City | STANWOOD |
| Event State | WASHINGTON |
| Event Country | -- |
| Zipcode of the event site | 98292 |
| Event Date Year | 1998 |
| Event Date Month | 2 |
| 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 | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 857 Pacific Standard Time |
| Direction of event from weather observation facility (degrees) | 115 |
| Weather Observation Facility ID | AWO |
| Elevation of weather observation facility | 137 |
| Distance of event from weather observation facility (units?) | 10 |
| Time Zone of the weather observation | PST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 0 |
| Lowest Non-Ceiling Height | 2800 |
| Sky/Lowest/Cloud Conditions | Scattered |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 7 |
| Dew Point at event time (in degress fahrenheit) | 6 |
| Wind Direction (degrees magnetic) | 0 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 0 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 29 |
| 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 | 1 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 597 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Feb 19 1998 12:00AM |
| NTSB Notification Time | 938 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Feb 16 2001 11:57AM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N48493 |
| NTSB Number | SEA98LA038 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 137: Agricultural |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Grumman-Schweizer |
| Aircraft Model | G-164B |
| Aircraft Series Identifier | G-164B |
| Aircraft Serial Number | 49B |
| Certified Max Gross Weight | 6075 |
| 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 | 1 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Dec 1 1997 12:00AM |
| Airframe hours since last inspection | 8 |
| Airframe Hours | 3388 |
| ELT Installed | No |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | CURTIS TRONSDAL |
| Aircraft Owner Street Address | 1668 MILLTOWN RD. |
| Aircraft Owner City | MT. VERNON |
| Aircraft Owner State | WA |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 98273 |
| Operator is an individual? | -- |
| Operator Name | |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | |
| Operator City | |
| Operator State | |
| Operator Country | |
| Operator Zip code | |
| Operator Code | YTYG |
| Owner has at least one certificate | Yes - certificate holder |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | Agriculture |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | Unknown |
| Indicates Domestic or International Flight | Unknown |
| Operator carrying Pax/Cargo/Mail | Unknown |
| Type of Flying (Per_Bus / Primary) | Aerial Application |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | 75S |
| Departure City | BURLINGTON |
| Departure State | WA |
| Departure Country | |
| Departure Time | 830 |
| Departure Time Zone | PST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | |
| Destination City | UNKNOWN |
| Destination State | |
| Destination Country | |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Feb 20 2001 6:29PM |
| 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 | -- |