Amateur-built AVID FLYER accident near Eldon, Missouri, December 28, 2009
On December 28, 2009 at about 7:30 pm local time, a amateur-built AVID FLYER, registered N491DS, was substantially damaged in an accident during maneuvering near Eldon, Missouri (Eldon Model Airpark airport). It was a flight test under general aviation rules (Part 91). 1 person had minor injuries. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The pilot's inability to climb or maintain proper airspeed due to the improper pitch setting of the propeller.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- December 28, 2009 · about 7:30 pm local time
- Place
- Eldon, Missouri · Eldon Model Airpark · map
- Type
- Accident
- Injuries
- 1 person had minor injuries.
- Weather
- visual conditions (good weather)
- Aircraft
- Amateur-built AVID FLYER
- Registration
- N491DS · no longer on the register · serial 491
- Damage
- Substantial damage
- Flight
- Flight test · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The pilot reported that he was preparing the homebuilt airplane for its first flight for the owner. He said that on the morning of the accident the airplane's engine was run for approximately 30 minutes for break-in at full power. After the engine run the cowling was reinstalled and the engine ran for an additional 15 minutes. Subsequently, the pilot performed taxi testing of the airplane. He had made 2 taxi tests to about 40 miles per hour, which he estimated would be the airplane's approximate stall speed. He stated that on the third taxi test, when about two-thirds of the way down the runway, a gust of wind caused the airplane to become airborne. The pilot stated that when he was able to get the airplane under control there was insufficient runway remaining to perform a landing and he decided to continue and return for landing. He stated that this was to be a taxi test only and that he had no intention to fly the airplane at that time. While attempting to climb, the pilot noticed that the engine speed was too high and he was not able to climb effectively. The pilot attempted to turn the airplane back to the airport to make a downwind landing, but the airplane began to stall. He stated that he lowered the nose and determined that he would not be able to make the runway. As the airplane's altitude decayed, the pilot pulled back on the stick and the airplane struck the ground. The pilot stated that he believed that the pitch setting of the airplane's propeller was improper, which did not allow proper thrust production for flight. During the accident the propeller blades were fragmented and determination of the installed pitch setting could not be obtained.
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
- Aerodynamic stall/spin during maneuvering defining event
The NTSB's findings
- cause Aircraft › Aircraft propeller/rotor › Propeller system › Propeller assembly › Incorrect service/maintenance
- cause Aircraft › Aircraft oper/perf/capability › Performance/control parameters › Airspeed › Attain/maintain not possible
- cause Aircraft › Aircraft oper/perf/capability › Aircraft capability › Climb capability › Attain/maintain not possible
Pilot
- Certificate: private
- Ratings: single-engine land
- Flight time: 1,500 hours in all; 0 in this make and model; 3 in the last 90 days
- Last flight review: July 12, 2009
- Medical certificate: Class 3 (with waivers/limitations)
- Seat: left
- Injury: minor injuries
The aircraft
- Seats: 2
- Landing gear: fixed
- Engine: Rotax 582 (piston); 0 hours total
The flight
- Departed from: H79 Eldon MO at 8:30 pm
- Destination: H79 Eldon MO
- Flight plan: none
- Runway 36, 3,300 ft by 75 ft
Weather at the time
- Light: daylight
- Wind: from 270° at 13 knots, gusting 17
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 39°F (4°C), dew point 23°F (-5°C)
- Altimeter: 30.26 inHg
- Observation at 8:35 pm from AIZ, 16 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 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.
