Individually Owned: 150,657
Corporate Owned: 137,281
White Sulphur Springs Airport
Aircraft Accident/Incident Report
White Sulphur Springs, Montana 59645
Monday, August 2, 2010 8:30 MDT
NTSB Narrative Summary Released at Completion of Accident
The pilot reported that after a local area flight in a tailwheel-equipped airplane, the approach and landing was uneventful. As the airplane touched down, a herd of antelope entered the left side of the runway and crossed in front of the airplane. The pilot attempted to swerve to the right to avoid the animals and the airplane ground-looped, substantially damaging the airplane’s left wing. The pilot reported no mechanical failures or malfunctions with the airframe or engine prior to the accident.
NTSB Probable Cause Narrative
The pilot’s loss of directional control while attempting to avoid a herd of antelope crossing the runway during the landing rollout.
Event Information
| Type of Event | Accident |
| Event Date | 8/2/2010 |
| Event Day of the Week | Monday |
| Time of Event | 830 |
| Event Time Zone | Mountain Daylight Time |
| Event City | White Sulphur Springs |
| Event State | MONTANA |
| Event Country | -- |
| Zipcode of the event site | 59645 |
| Event Date Year | 2010 |
| Event Date Month | 8 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 463008N |
| Event Location Longitude | 1105428W |
| Event Location Airport | White Sulphur Springs Airport |
| Event Location Nearest Airport ID | 7S6 |
| 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 | 5061 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 853 Mountain Daylight Time |
| Direction of event from weather observation facility (degrees) | 279 |
| Weather Observation Facility ID | KHLN |
| Elevation of weather observation facility | 3877 |
| Distance of event from weather observation facility (units?) | 52 |
| 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) | 8 |
| Wind Direction (degrees magnetic) | -- |
| Variable Wind Indicator | -- |
| Wind Speed (knots) | -- |
| Wind Velocity Indicator | Calm |
| Wind Gust Indicator | -- |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.1 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | KHLN 021453Z 00000KT 10SM CLR 17/08 A3010 RMK AO2 |
| 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) | 27470 |
| NTSB Notification Source | SEA ROC |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Nov 3 2010 11:17AM |
| User who most recently changed record | johb |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N3098M |
| NTSB Number | WPR10CA380 |
| 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 | PIPER |
| Aircraft Model | PA-12 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 12-1784 |
| Certified Max Gross Weight | 1869 |
| 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 | Annual |
| Date of Last Inspection | Apr 15 2003 12:00AM |
| Airframe hours since last inspection | 62 |
| Airframe Hours | 1750 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | Unknown |
| Aircraft Owner Name | ROATCH EDWARD J |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | WHITE SULPHUR SPRS |
| Aircraft Owner State | MT |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 59645 |
| Operator is an individual? | No |
| Operator Name | ROATCH EDWARD J |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | -- |
| Operator City | WHITE SULPHUR SPRS |
| Operator State | MT |
| Operator Country | USA |
| Operator Zip code | 59645 |
| 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 | 7S6 |
| Departure City | White Sulphur Springs |
| Departure State | MT |
| Departure Country | USA |
| Departure Time | 700 |
| Departure Time Zone | MDT |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | 7S6 |
| Destination City | White Sulphur Springs |
| Destination State | MT |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Sep 16 2010 9:51PM |
| User who most recently changed record | stam |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 31 |
| Runway Length | 3200 |
| Runway Width | 90 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |