Amateur-built KOLB TWINSTAR accident near St. Genevieve, Missouri, June 1, 1991
On June 1, 1991 at about 1:30 pm local time, a amateur-built KOLB TWINSTAR, registered N7175J, was substantially damaged in an accident near St. Genevieve, Missouri (Ste. Genevieve airport). It was a personal flight under general aviation rules (Part 91). 2 people were seriously injured. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
THE FAILURE OF THE PILOT TO ABORT THE TAKEOFF AND IMPROPER REMEDIAL ACTION BY THE PILOT RATED PASSENGER AFTER ASSUMING CONTROL OF THE AIRPLANE. A FACTOR ASSOCIATED WITH THE ACCIDENT IS THE PILOT LOSING DIRECTIONAL CONTROL DURING THE TAKEOFF GROUND RUN.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- June 1, 1991 · about 1:30 pm local time
- Place
- St. Genevieve, Missouri · Ste. Genevieve · map
- Type
- Accident
- Injuries
- 2 people were seriously injured.
- Weather
- visual conditions (good weather)
- Aircraft
- Amateur-built KOLB TWINSTAR KOLB TWINS
- Registration
- N7175J · no longer on the register · serial 9043
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE ACCIDENT AIRPLANE COLLIDED WITH FARM EQUIPMENT DURING A GROUND RUN FOR TAKEOFF. THE PILOT CONTINUED THE TAKEOFF AFTER LOSING DIRECTIONAL CONTROL. A PILOT RATED PASSENGER ASSUMED CONTROL OF THE AIRPLANE JUST BEFORE IMPACT AND UNSUCCESSFULLY ATTEMPTED TO HOP THE AIRPLANE OVER THE EQUIPMENT.
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
Pilot
- Certificate: private
- Ratings: single-engine land
- Flight time: 121 hours in all; 14 in this make and model; 4 in the last 90 days; 1 in the last 30 days; 75 as pilot in command
- Medical certificate: Class 3 (valid medical--no waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 71 hours
- Last inspection: annual inspection, August 17, 1990; 71 hours since
- Maximum gross weight: 725 lb
- Seats: 2
- Landing gear: fixed
- Engine: Rotax 503UL (piston); 0 hours total
The flight
- Flight plan: none
- Runway 13, 1,600 ft by 90 ft
- A second pilot was aboard
Weather at the time
- Light: daylight
- Visibility: 20 statute miles
- Sky: clear
- Temperature: 75°F (24°C), dew point 0°F (-18°C)
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| 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.