Amateur-built Avid Mark IV accident near Brookfield, Missouri, April 2, 2011
On April 2, 2011 at about 3:30 pm local time, a amateur-built Avid Mark IV, registered N6313T, was substantially damaged in an accident during landing (landing roll) near Brookfield, Missouri (North Central Missouri Regiona airport). It was a personal flight under general aviation rules (Part 91). No one was hurt; 2 people were on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The pilot’s failure to maintain directional control during landing, which resulted in the airplane departing the runway.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- April 2, 2011 · about 3:30 pm local time
- Place
- Brookfield, Missouri · North Central Missouri Regiona · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Amateur-built Avid Mark IV
- Registration
- N6313T · registry record · serial 1564D
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The pilot said that before the accident flight he changed the tailwheel assembly, which resulted in an increase in tire width. He said that he made the change so that the tailwheel would "float" during the landing roll on turf runways. The pilot was landing at a local airport when the tailwheel experienced a severe shimmy on touchdown. The airplane started to pull and then veer off the left side of the runway and impacted a ditch, despite the pilot's rudder application. A postaccident examination of the airplane showed no preimpact anomalies.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
What happened, in order
- Miscellaneous/other during landing (landing roll)
- Loss of control on ground during landing (landing roll) defining event
- Attempted remediation/recovery during landing (landing roll)
- Collision with terrain or object (not controlled flight into terrain) during landing (landing roll)
The NTSB's findings
- cause Aircraft › Aircraft oper/perf/capability › Performance/control parameters › Directional control › Not attained/maintained
- Aircraft › Aircraft systems › Landing gear system › Nose/tail landing gear › Not specified
Pilot
- Certificate: private
- Ratings: single-engine land
- Flight time: 174 hours in all; 55 in this make and model; 6 in the last 90 days; 3 in the last 30 days; 132 as pilot in command
- Last flight review: October 9, 2010
- Medical certificate: Class 3 (with waivers/limitations)
- Seat: left
- Injury: no injuries
The aircraft
- Airframe total time: 697 hours
- Last inspection: condition inspection, June 4, 2010
- Maximum gross weight: 1,150 lb
- Seats: 2
- Landing gear: fixed
- Engine: Subaru - Stratus Built EA81 (piston); 0 hours total
The flight
- Departed from: NONE Brookfield MO at 3:10 pm
- Destination: MO8 Brookfield MO
- Flight plan: none
- Runway 36, 4,003 ft by 75 ft
Weather at the time
- Light: daylight
- Sky: clear
- Temperature: 57°F (14°C), dew point 28°F (-2°C)
- Altimeter: 30.02 inHg
- Observation at 3:52 pm from CDJ, 26 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 1 | |||
| Passengers | 1 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.
Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.