Individually Owned: 150,657
Corporate Owned: 137,281
Richfield Muni Airport
Aircraft Accident/Incident Report
Richfield, Utah 84701
Wednesday, September 5, 2012 10:00 MDT
NTSB Narrative Summary Released at Completion of Accident
The pilot reported that the new owner of the ultralight had reassembled it and found that it oscillated during level flight and that the owner then contacted him for assistance in diagnosing the issue. He reported that he conducted a preflight inspection and noted no anomalies. Immediately after takeoff, the ultralight began to oscillate up and down with no elevator input. The pilot stayed in the traffic pattern, and the oscillations continued at different altitudes and airspeeds. During landing, the ultralight touched down about 45 knots with upward oscillations. The pilot decided to take off again and experiment with different trim settings. Upon liftoff, the ultralight again began to oscillate with no throttle or elevator inputs. The pilot decided to depart the traffic pattern to further experiment with the trim and power settings; however, different trim and power settings had no effect on the oscillations. The pilot indicated that the oscillations were random, so he could only react to the direction with flight control corrections and could not anticipate which flight control corrections would be needed. The pilot reentered the traffic pattern for landing and, during the landing, when the ultralight was about 5 feet above the ground and at 40 knots, the oscillations began again. The pilot pushed the yoke forward, which stopped the oscillations; however, the rear main landing gear touched down on the runway, which forced the ultralight back into the air. The pilot recalled that the ultralight’s nose then pointed downward and that he pushed full left rudder before the ultralight impacted the ground. After the accident, the pilot learned that the owner had reassembled the ultralight without assistance from a mechanic. While inspecting the ultralight after the accident, the pilot noted that, if the pitch control cable was loose, it would randomly move. The ultralight was not made available by the owner for examination; therefore, the reason for the oscillations could not be determined; however, it is likely that the pitch control cable was loose, causing the random oscillations.
NTSB Probable Cause Narrative
A loss of control during landing due to a pitch control malfunction. Contributing to the accident was the pilot’s decision to continue flight with a known mechanical problem.
Event Information
| Type of Event | Accident |
| Event Date | 9/5/2012 |
| Event Day of the Week | Wednesday |
| Time of Event | 1000 |
| Event Time Zone | Mountain Daylight Time |
| Event City | Richfield |
| Event State | UTAH |
| Event Country | -- |
| Zipcode of the event site | 84701 |
| Event Date Year | 2012 |
| Event Date Month | 9 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 384411N |
| Event Location Longitude | 1120556W |
| Event Location Airport | Richfield Muni Airport |
| Event Location Nearest Airport ID | RIF |
| 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 | 5301 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 956 Mountain Daylight Time |
| Direction of event from weather observation facility (degrees) | 180 |
| Weather Observation Facility ID | RIF |
| Elevation of weather observation facility | 5301 |
| Distance of event from weather observation facility (units?) | 1 |
| 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) | 50 |
| Air Temperature at event time (in degrees celsius) | 21 |
| Dew Point at event time (in degress fahrenheit) | 9 |
| 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) | 30.04 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | Serious |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | 1 |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 33403 |
| 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 | Sep 25 2014 12:59PM |
| User who most recently changed record | cort |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N8106C |
| NTSB Number | WPR12LA413 |
| 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 | ELLEFSON |
| Aircraft Model | T-BIRD II |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 5168 |
| Certified Max Gross Weight | -- |
| Aircraft Category | Ultralight |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | Yes |
| 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 | Jan 2 2012 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | 224 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | Unknown |
| Aircraft Owner Name | Travis W. Childers |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Joseph |
| Aircraft Owner State | UT |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 84739-1161 |
| Operator is an individual? | Yes |
| Operator Name | Bonnie J. Wallace |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | -- |
| Operator City | Lake Havasu City |
| Operator State | AZ |
| Operator Country | USA |
| Operator Zip code | 84603 |
| 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 | RIF |
| Departure City | Richfield |
| Departure State | UT |
| Departure Country | USA |
| Departure Time | 1000 |
| Departure Time Zone | MDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | RIF |
| Destination City | Richfield |
| Destination State | UT |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Oct 30 2014 1:10PM |
| User who most recently changed record | coos |
| 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 | -- |