Grumman G58A accident near Oshkosh, Wisconsin, August 1, 1993
On August 1, 1993 at about 7:18 pm local time, a Grumman G58A, registered N3025, was substantially damaged in an accident near Oshkosh, Wisconsin (Wittman Regional airport). It was a personal flight under general aviation rules (Part 91). 1 person was seriously injured. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
THE PILOT-IN-COMMAND'S INADVERTENT USE OF THE MIXTURE RESULTING IN A LEAN MIXTURE.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- August 1, 1993 · about 7:18 pm local time
- Place
- Oshkosh, Wisconsin · Wittman Regional · map
- Type
- Accident
- Injuries
- 1 person was seriously injured.
- Weather
- visual conditions (good weather)
- Aircraft
- Grumman G58A
- Registration
- N3025 · registry record · serial 739A
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
DURING INITIAL CLIMB THE ENGINE BACKFIRED AND SUSTAINED A POWER LOSS. THE PILOT CONFIGURED THE AIRPLANE FOR A FORCED LANDING WITH THE LANDING GEAR AND FLAPS EXTENDED. ON TOUCHDOWN THE AIRPLANE CARTWHEELED. A POST ACCIDENT EXAMINATION REVEALED THAT THE MIXTURE CONTROL WAS PARTIALLY CLOSED. NO OTHER ANOMALIES WITH THE AIRPLANE WERE FOUND ON FURTHER EXAMINATION.
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; instrument: airplane
- Flight time: 2,256 hours in all; 56 in this make and model; 30 in the last 90 days; 21 in the last 30 days; 2,256 as pilot in command
- Medical certificate: Class 3 (valid medical--w/ waivers/lim.)
- Seat: ctr
The aircraft
- Last inspection: annual inspection, July 14, 1993; 8 hours since
- Maximum gross weight: 9,000 lb
- Seats: 1
- Landing gear: retractable
- Engine: P&W R2800-97-CA18 (piston); 0 hours total
The flight
- Flight plan: none
- Runway 18, 8,001 ft by 150 ft
Weather at the time
- Light: daylight
- Wind: from 300° at 14 knots
- Visibility: 20 statute miles
- Sky: clear
- Temperature: 0°F (-18°C), dew point 0°F (-18°C)
- Altimeter: 29.00 inHg
- Observation at 7:20 pm from OSH, 1 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.