Amateur-built S-1C accident near Hartford, Wisconsin, July 19, 1986
On July 19, 1986 at about 8:10 pm local time, a amateur-built S-1C, registered N3507, was substantially damaged in an accident near Hartford, Wisconsin (Hartford Muni airport). It was a flight of an unrecorded kind 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 NTSB has not yet published a probable cause for this accident. Investigations usually take one to two years; this page updates when the final report is released.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- July 19, 1986 · about 8:10 pm local time
- Place
- Hartford, Wisconsin · Hartford Muni · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Amateur-built S-1C
- Registration
- N3507 · registry record · serial 110
- Damage
- Substantial damage
- Flight
- Flight of an unrecorded kind · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE PLT WAS ON AN AEROBATIC COMPETITION FLT. HE REPORTED THAT AFTER FINISHING A SEQUENCE OF AEROBATIC MANEUVERS, HE RETURNED TO THE RWY TO LAND. DURING THE LANDING, THE ACFT WAS HIGH ON FINAL APCH & TOUCHED DOWN TO FAR DOWN THE 2100 FT RWY. IT THEN CONTD OFF THE DEPARTURE END & WENT INTO A CORN FIELD & NOSED OVER.
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: 509 hours in all; 42 in this make and model; 40 in the last 90 days; 15 in the last 30 days; 509 as pilot in command
- Medical certificate: Class 3 (valid medical--no waivers/lim.)
- Seat: ctr
The aircraft
- Airframe total time: 272 hours
- Last inspection: inspection type not recorded, April 13, 1986; 36 hours since
- Maximum gross weight: 1,150 lb
- Seats: 1
- Landing gear: fixed
- Engine: Lycoming O-290 (piston); 0 hours total
The flight
- Departed from: C31 Hartford WI at 7:30 pm
- Flight plan: none
- Runway 18, 2,100 ft by 195 ft
Weather at the time
- Light: daylight
- Wind: from 190° at 8 knots
- Visibility: 8 statute miles
- Sky: broken clouds at 5,000 ft; not recorded at 5,000 ft
- Temperature: 91°F (33°C), dew point 75°F (24°C)
- Altimeter: 29.00 inHg
- Observation at 7:10 pm from MWC, 22 miles away
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.
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.