Individually Owned: 150,657
Corporate Owned: 137,281
Four Corners Regional Airport
Aircraft Accident/Incident Report
Farmington, New Mexico 87401
Wednesday, August 11, 2010 11:50 MDT
NTSB Narrative Summary Released at Completion of Accident
The pilot said that very little crosswind correction was required as he landed on runway 25. After rolling a few hundred feet, the airplane "swerved very strongly to the right." Opposite brake and rudder had no effect and the airplane departed the runway and impacted terrain. The left landing gear collapsed and the left wing and elevator sustained leading edge damage. Federal Aviation Administration inspectors found that the through-bolt that attached the inboard end of the gear leg to the airframe hard-point had pre-existing damage. Further examination found that threads from the failed nut remained stuck in the threads of the bolt, indicating that the nut failed and stripped off the bolt, leaving the inboard end of the gear leg loose and free to move up and down. This allowed the gear leg to move forward and aft. The chaffing on the longeron, inboard of the gear leg attach point, was indicative that the bolt-nut combination had been loose for some time. There were indications of looseness on the right gear leg attach bolt after the leg was removed for transport.
NTSB Probable Cause Narrative
Pre-existing damage of the through-bolt that attached the inboard end of the gear leg to the airframe hard-point, likely caused during maintenance on the gear.
Event Information
| Type of Event | Accident |
| Event Date | 8/11/2010 |
| Event Day of the Week | Wednesday |
| Time of Event | 1150 |
| Event Time Zone | Mountain Daylight Time |
| Event City | Farmington |
| Event State | NEW MEXICO |
| Event Country | -- |
| Zipcode of the event site | 87401 |
| Event Date Year | 2010 |
| Event Date Month | 8 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 364429N |
| Event Location Longitude | 1081348W |
| Event Location Airport | Four Corners Regional |
| Event Location Nearest Airport ID | FMN |
| 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 | 5506 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1158 Mountain Daylight Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | FMN |
| Elevation of weather observation facility | 5506 |
| Distance of event from weather observation facility (units?) | -- |
| 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) | 29 |
| Dew Point at event time (in degress fahrenheit) | 4 |
| Wind Direction (degrees magnetic) | -- |
| Variable Wind Indicator | Variable |
| Wind Speed (knots) | 3 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.21 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | METAR KFMN 111753Z VRB03KT 10SM CLR 28/05 A3021 RM |
| 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 | 1 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 27494 |
| NTSB Notification Source | FAA ASW ROC |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Sep 23 2010 3:38PM |
| User who most recently changed record | bowl |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N4492 |
| NTSB Number | CEN10LA474 |
| 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 | A185F |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 18502971 |
| Certified Max Gross Weight | 3525 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | 2 |
| 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 | Oct 5 2009 12:00AM |
| Airframe hours since last inspection | 23 |
| Airframe Hours | 2371 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | Unknown |
| Aircraft Owner Name | Richard B. Negley |
| Aircraft Owner Street Address | 101 Aylesbury Hill |
| Aircraft Owner City | San Antonio |
| Aircraft Owner State | TX |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 78209-5441 |
| Operator is an individual? | No |
| Operator Name | Richard B. Negley |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | 101 Aylesbury Hill |
| Operator City | San Antonio |
| Operator State | TX |
| Operator Country | USA |
| Operator Zip code | 78209-5441 |
| 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 | SSF |
| Departure City | San Antonio |
| Departure State | TX |
| Departure Country | USA |
| Departure Time | 802 |
| Departure Time Zone | CDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | FMN |
| Destination City | Farmington |
| Destination State | NM |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Aug 24 2010 6:36PM |
| User who most recently changed record | scoa |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 25 |
| Runway Length | 6704 |
| Runway Width | 100 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |