Amateur-built SONEX accident near Buffalo, New York, November 29, 2010
On November 29, 2010 at about 7:15 pm local time, a amateur-built SONEX, registered N469SA, was substantially damaged in an accident during takeoff near Buffalo, New York (Buffalo Airfield). It was a personal flight under general aviation rules (Part 91). No one was hurt; 1 person was 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 takeoff due to his abrupt advancing of the throttle.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- November 29, 2010 · about 7:15 pm local time
- Place
- Buffalo, New York · Buffalo Airfield · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Amateur-built SONEX
- Registration
- N469SA · registry record · serial 0206
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The pilot stated that, when starting to takeoff in the tailwheel-equipped airplane, he immediately applied full engine power and lost control of the airplane. The airplane departed the runway to the left and impacted a visual approach slope indicator control box, resulting in substantial damage to the right wing spar. The pilot reported that there were no preimpact mechanical malfunctions or anomalies with the airplane. He additionally stated that the accident may have been prevented if he had applied the throttle gradually.
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
- Loss of control on ground during takeoff defining event
- Runway excursion during takeoff
- Collision with terrain or object (not controlled flight into terrain) during takeoff
The NTSB's findings
- cause Aircraft › Aircraft oper/perf/capability › Performance/control parameters › Directional control › Not attained/maintained
- cause Personnel issues › Task performance › Use of equip/info › Aircraft control › Pilot
- cause Aircraft › Aircraft oper/perf/capability › Performance/control parameters › Powerplant parameters › Incorrect use/operation
Pilot
- Certificate: commercial pilot, private
- Ratings: single-engine land
- Flight time: 527 hours in all; 7 in this make and model; 7 in the last 90 days; 3 in the last 30 days; 406 as pilot in command
- Last flight review: August 22, 2009
- Medical certificate: Class 3 (with waivers/limitations)
- Seat: left
- Injury: no injuries
The aircraft
- Airframe total time: 191 hours
- Last inspection: annual inspection, June 1, 2010
- Maximum gross weight: 1,150 lb
- Seats: 2
- Landing gear: fixed
- Engine: Ama/Expr UNKNOWN ENG (piston); 0 hours total
The flight
- Departed from: 9G0 Buffalo NY
- Destination: 9G0 Buffalo NY
- Flight plan: none
- Runway 24, 2,600 ft by 59 ft
Weather at the time
- Light: daylight
- Wind: from 170° at 6 knots
- Visibility: 10 statute miles
- Sky: broken clouds at 22,000 ft
- Temperature: 46°F (8°C), dew point 25°F (-4°C)
- Altimeter: 30.28 inHg
- Observation at 6:54 pm from BUF, 5 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.