Individually Owned: 150,657
Corporate Owned: 137,281
Yankee Field Airport
Aircraft Accident/Incident Report
Fort Collins, Colorado 80524
Saturday, April 9, 2011 12:20 MDT
NTSB Narrative Summary Released at Completion of Accident
The pilot reported that he was conducting an off-airport precautionary landing due to an unanticipated gusting wind and turbulence. Just before touchdown the pilot made a sudden right turn to avoid a single-wire electric livestock fence when the right wing stalled and he lost control. The airplane then impacted terrain causing substantial damage to the fuselage frame, both wings, and the engine mount. The pilot stated that he had more experience in weight-shift control light sport airplanes and that the throttle in that type of aircraft was controlled with the right foot. He commented that during the sudden right turn he might have inadvertently applied full right rudder thinking that he was applying full throttle. The pilot reported no preimpact mechanical anomalies or failures with the airplane.
NTSB Probable Cause Narrative
The pilot's inadvertent application of full right rudder during landing, which resulted in an aerodynamic stall and impact with terrain.
Event Information
| Type of Event | Accident |
| Event Date | 4/9/2011 |
| Event Day of the Week | Saturday |
| Time of Event | 1220 |
| Event Time Zone | Mountain Daylight Time |
| Event City | Fort Collins |
| Event State | COLORADO |
| Event Country | -- |
| Zipcode of the event site | 80524 |
| Event Date Year | 2011 |
| Event Date Month | 4 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 403802N |
| Event Location Longitude | 1045916W |
| Event Location Airport | Yankee Field Airport |
| Event Location Nearest Airport ID | CO53 |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 1 |
| Degrees magnetic from airport | -- |
| Airport Elevation | 5050 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1255 Mountain Daylight Time |
| Direction of event from weather observation facility (degrees) | 115 |
| Weather Observation Facility ID | KGXY |
| Elevation of weather observation facility | 4697 |
| Distance of event from weather observation facility (units?) | 20 |
| Time Zone of the weather observation | MDT |
| 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) | 17 |
| Dew Point at event time (in degress fahrenheit) | 4 |
| Wind Direction (degrees magnetic) | 150 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 9 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 29.55 |
| 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) | 28635 |
| NTSB Notification Source | FAA ANM Regional Operations Ce |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Jun 29 2011 3:29PM |
| User who most recently changed record | bowl |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N3581S |
| NTSB Number | CEN11CA289 |
| 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 | RANS |
| Aircraft Model | S12 |
| Aircraft Series Identifier | XL |
| Aircraft Serial Number | 10 |
| Certified Max Gross Weight | 1050 |
| 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 | Conditional |
| Date of Last Inspection | Apr 3 2011 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | 917 |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | No |
| ELT Type | C91-A |
| Aircraft Owner Name | YANKEERANS LLC |
| Aircraft Owner Street Address | 4623 E COUNTY ROAD 54 |
| Aircraft Owner City | FORT COLLINS |
| Aircraft Owner State | CO |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 80524 |
| Operator is an individual? | Yes |
| Operator Name | DAVE LUNDAHL |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | -- |
| Operator City | FORT COLLINS |
| Operator State | CO |
| Operator Country | USA |
| Operator Zip code | 80526 |
| 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 | CO53 |
| Departure City | Fort Collins |
| Departure State | CO |
| Departure Country | USA |
| Departure Time | 1200 |
| Departure Time Zone | MDT |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | CO53 |
| Destination City | Fort Collins |
| Destination State | CO |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jun 25 2011 12:23PM |
| User who most recently changed record | latt |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | N/A |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |