Individually Owned: 150,657
Corporate Owned: 137,281
Kemmerer Muni Airport
Aircraft Accident/Incident Report
Kemmerer, Wyoming 83101
Sunday, July 16, 2006 12:50 MDT
NTSB Narrative Summary Released at Completion of Accident
In the fall of 2004, the airplane had been damaged while in a hangar during a hurricane. During the repairs, the wings were removed and reinstalled. Prior to the pilot's purchase of the airplane, he and an inspection authorization (IA) certificated mechanic examined the airplane and the airplane's maintenance records. During the cross-country flight back to the pilot's state of residence, he landed for an intermediate fuel stop. After refueling, the pilot taxied to runway 34 for takeoff. According to the airport's automated weather observing system (AWOS), the density altitude was 10,300 feet mean sea level and the wind was 4 knots from the west. In accordance with the airplane flight manual, the pilot selected the second notch of flaps (24 degrees) for the takeoff. During the takeoff roll, the airplane began to "lift off (feel light) and the tail wheel left the ground, the [airplane] began turning left." The pilot attempted to maneuver the airplane back to the runway centerline; however, the application of "right rudder was ineffective." The airplane's main landing gear struck a runway light and the airplane was approaching a snow fence. Subsequently, the pilot "intentionally ground-looped the airplane," and the airplane came to rest upright in a field adjacent to the runway. Examination of the airplane revealed that the wing flap system was not rigged in accordance with the airplane's maintenance manual. The accident airplane's "handle full down" flap setting was 0 degrees, and according to the manual, the "handle full down" flap setting was negative 7 degrees. The flap settings were found to be misrigged by 7 degrees through the entire flap setting range. In accordance with the airplane flight manual, the flap handle position for takeoff should be set the second notch, or 24 degrees of flaps, position. Due to the improperly rigged flap setting, the actual flap position during the accident attempted takeoff was 31 degrees. According to the airplane manufacturer, the 31 degrees of flaps at takeoff would produce increased drag and premature lift of the wing. During takeoff with the improper flap position, elevator authority would be available; however, rudder authority may be decreased at lower airspeeds.
NTSB Probable Cause Narrative
the pilot's loss of directional control during takeoff due to the improper rigging of the airplane's flap system by unknown maintenance personnel. A contributing factor was the high density altitude.
Event Information
| Type of Event | Accident |
| Event Date | 7/16/2006 |
| Event Day of the Week | Sunday |
| Time of Event | 1250 |
| Event Time Zone | Mountain Daylight Time |
| Event City | Kemmerer |
| Event State | WYOMING |
| Event Country | -- |
| Zipcode of the event site | 83101 |
| Event Date Year | 2006 |
| Event Date Month | 7 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 414926N |
| Event Location Longitude | 1103325W |
| Event Location Airport | KEMMERER MUNI |
| Event Location Nearest Airport ID | EMM |
| 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 | -- |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Pilot |
| 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) | -- |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | -- |
| Variable Wind Indicator | Variable |
| Wind Speed (knots) | -- |
| Wind Velocity Indicator | Light and Variable |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | -- |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| 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) | 20798 |
| NTSB Notification Source | FAA-Northwest Mountain Region |
| NTSB Notification Date | Jul 16 2006 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Dec 28 2006 9:08AM |
| User who most recently changed record | NTSB\johb |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Casper, Wyoming |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N72RM |
| NTSB Number | DEN06LA100 |
| 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 | Maule |
| Aircraft Model | M 6 180C |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 8020C |
| Certified Max Gross Weight | 2400 |
| 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 | Annual |
| Date of Last Inspection | Jun 1 2006 12:00AM |
| Airframe hours since last inspection | 20 |
| Airframe Hours | 4275 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Brian E. Sparks |
| Aircraft Owner Street Address | 870 College St. S. |
| Aircraft Owner City | Monmouth |
| Aircraft Owner State | OR |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 97361 |
| Operator is an individual? | No |
| 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 | -- |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | -- |
| 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 | EMM |
| Departure City | Kemmerer |
| Departure State | WY |
| Departure Country | USA |
| Departure Time | 1250 |
| Departure Time Zone | MDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | EUL |
| Destination City | Caldwell |
| Destination State | ID |
| Destination Country | USA |
| Specific Phase of Flight | Takeoff |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Oct 20 2006 11:13AM |
| User who most recently changed record | BOWL |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 34 |
| Runway Length | 8200 |
| Runway Width | 60 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |