Individually Owned: 150,657
Corporate Owned: 137,281
Stark's Twin Oaks Airpark Airport
Aircraft Accident/Incident Report
Hillsboro, Oregon 97123
Friday, August 13, 2010 16:00 PDT
NTSB Narrative Summary Released at Completion of Accident
The pilot performed a preflight inspection for the cross-country flight, which included checking the fuel tanks. He used a calibrated stick and determined that he had 15 gallons in the right fuel tank and 10 gallons in the left fuel tank; he flew the majority of the flight with the right fuel tank selected. Upon reaching the destination airport, as he was switching from the right fuel tank position to the "BOTH" position, the engine surged. As the pilot made a left turn onto the base leg of the traffic pattern, he noted that the airplane was slightly high. He initiated a left slip to lose altitude. When he leveled the airplane, the engine began to surge as if it were out of fuel. The pilot reported that he tried to maintain engine power by pumping the throttle back and forth, but was unable to retain power. Determining that he would not be able to maneuver the airplane to the runway, the pilot opted to perform a forced landing on a dirt path. The airplane landed hard and the right main landing gear collapsed. The pilot reported that there were no mechanical problems with the airplane. Cessna issued guidance to pilots not to perform slips with less than 1/4 tank of fuel; however, the guidance was issued after the airplane's handbook was published. The pilot further stated that if he had maintained a correct airspeed for the approach, it would not have been necessary for him to maneuver the airplane in a slip.
NTSB Probable Cause Narrative
A loss of engine power due to fuel starvation resulting from unporting when the pilot entered into a slip during the turn to the final approach leg.
Event Information
| Type of Event | Accident |
| Event Date | 8/13/2010 |
| Event Day of the Week | Friday |
| Time of Event | 1600 |
| Event Time Zone | Pacific Daylight Time |
| Event City | Hillsboro |
| Event State | OREGON |
| Event Country | -- |
| Zipcode of the event site | 97123 |
| Event Date Year | 2010 |
| Event Date Month | 8 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 452525N |
| Event Location Longitude | 1225619W |
| Event Location Airport | Stark's Twin Oaks Airpark |
| Event Location Nearest Airport ID | 7S3 |
| 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 | 170 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | -- |
| Elevation of weather observation facility | -- |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | -- |
| 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) | 33 |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | 30 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 15 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 29.85 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | Minor |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | 1 |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 27546 |
| 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 | Dec 3 2010 11:01AM |
| User who most recently changed record | johb |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N6475X |
| NTSB Number | WPR10CA401 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | Company VFR |
| Flight plan Was Activated? | Yes |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | -- |
| Aircraft Manufacturer's Full Name | CESSNA |
| Aircraft Model | 180D |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 18050975 |
| Certified Max Gross Weight | 2650 |
| 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 | Fixed |
| Aircraft, Type of Last Inspection | -- |
| Date of Last Inspection | -- |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | Unknown |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | N6475X LLC |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | BEAVERTON |
| Aircraft Owner State | OR |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 97007-8410 |
| Operator is an individual? | Yes |
| Operator Name | Alan Williams |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | -- |
| Operator City | Kent |
| Operator State | WA |
| Operator Country | USA |
| Operator Zip code | 98042 |
| 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 | No |
| Departure Airport Code | BFI |
| Departure City | Seattle |
| Departure State | WA |
| Departure Country | USA |
| Departure Time | 1455 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | 7S3 |
| Destination City | Hillsboro |
| Destination State | OR |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Oct 1 2010 3:25PM |
| User who most recently changed record | coos |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 02 |
| Runway Length | 2465 |
| Runway Width | 48 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |