Air Tractor AT-502 accident near Minto, North Dakota, July 9, 1998
On July 9, 1998 at about 2:00 am local time, a Air Tractor AT-502, registered N9185C, was substantially damaged in an accident near Minto, North Dakota (Minto Municipal airport). It was an aerial application (crop spraying) flight under agricultural flying rules (Part 137). 1 person had minor injuries. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
the pilot's selection of unsuitable terrain for takeoff. Factors were wet and soft runway conditions, and a ditch and the end of the overrun area.
Source: NTSB aviation accident database, copy made November 2, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- July 9, 1998 · about 2:00 am local time · cases in 1998
- Place
- Minto, North Dakota · Minto Municipal · cases near this airport · map
- Type
- Accident
- Injuries
- 1 person had minor injuries.
- Weather
- visual conditions (good weather)
- Aircraft
- Air Tractor AT-502
- Registration
- N9185C · registry record · serial 502-0207
- Damage
- Substantial damage
- Flight
- Aerial application (crop spraying) flight · agricultural flying rules (Part 137)
The NTSB's narrative final · quoted from the NTSB record
The pilot said that the first 700 feet of the takeoff runway was concrete and the remaining 1,600 feet was wet turf. He said that during the takeoff roll on the wet turf the left main landing gear tire encountered a 'soft rut' and the airplane yawed to the left. He indicated that his head hit the roll-bar. By the time he recovered, the airplane had slowed to the point that it impacted a ditch at the end of the runway and nosed over. The pilot did not indicate any mechanical problems with the airplane and said that the engine power remained 'full' throughout the takeoff roll.
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: commercial pilot
- Ratings: single-engine land; instrument: airplane
- Flight time: 4,415 hours in all; 2,056 in this make and model; 122 in the last 90 days; 95 in the last 30 days; 4,326 as pilot in command
- Medical certificate: Class 2 (valid medical--no waivers/lim.)
- Seat: ctr
The aircraft
- Last inspection: annual inspection
- Landing gear: fixed
- Engine: P&W PT-6-34 (turboprop); 0 hours total
The flight
- Departed from: D06 at 2:00 am
- Flight plan: none
- Runway 17, 2,300 ft by 100 ft
Weather at the time
- Light: dusk
- Visibility: 7 statute miles
- Sky: clear
- Temperature: 75°F (24°C), dew point 0°F (-18°C)
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| 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.
Connections how this case links to the rest of the register
- N9185C on the register today · the tail number may have moved to another aircraft since
- Engine: P&W PT-6-34 12 aircraft carry this series today · as the NTSB recorded it
- Minto Municipal · nearest airport
- Accidents and incidents in North Dakota 581 since 1982 · 59 in the last ten years
- North Dakota 2,493 aircraft registered
The whole map of how records connect · these connections as data: /graph/accident/CHI98LA243.json.
The bigger picture in Aviation Analytics: accidents over time since 1982, by model, by phase of flight and conditions, by place and on the map.
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 does not name anyone involved, its policy at this time. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.