Amateur-built MONI accident near Eau Claire, Wisconsin, August 15, 1992
On August 15, 1992 at about 5:00 pm local time, a amateur-built MONI, registered N3944C, was substantially damaged in an accident near Eau Claire, Wisconsin (Eau Claire County 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 FAILURE TO MAINTAIN AIRSPEED.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- August 15, 1992 · about 5:00 pm local time
- Place
- Eau Claire, Wisconsin · Eau Claire County Airport · map
- Type
- Accident
- Injuries
- 1 person was seriously injured.
- Weather
- visual conditions (good weather)
- Aircraft
- Amateur-built MONI
- Registration
- N3944C · no longer on the register · serial 000151
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE ACCIDENT OCCURRED AS THE PILOT/OWNER OF THE HOMEBUILT AIRPLANE WAS MAKING HIS FIRST FLIGHT IN THE AIRCRAFT. THE PILOT STATED THAT AFTER TAKEOFF HE ACCELERATED TO 60 KNOTS AND NOTED THAT CONTROL RESPONSE SEEMED 'SLOW.' HE THEN ACCELERATED TO 70 KNOTS AND THE AILERONS STILL SEEMED 'UNRESPONSIVE.' HE STATED HE ATTEMPTED TO KEEP THE AIRSPEED BETWEEN 75 AND 80 KNOTS; HOWEVER, THE AIRPLANE SLOWED TO 74 KNOTS AT WHICH TIME, HE STATED, THE RIGHT WING STALLED. WITNESSES REPORTED SEEING THE AIRPLANE DURING THE INITIAL CLIMB AND INDICATED THAT THE WINGS WERE ROLLING LEFT AND RIGHT JUST PRIOR TO THE AIRPLANE PITCHING NOSE DOWN AND ENTERING A BANK UNTIL IMPACT WITH THE TERRAIN.
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: 211 hours in all; 4 in the last 90 days; 160 as pilot in command
- Medical certificate: Class 3 (valid medical--w/ waivers/lim.)
- Seat: ctr
The aircraft
- Airframe total time: 164 hours
- Last inspection: annual inspection, May 5, 1992; 3 hours since
- Maximum gross weight: 550 lb
- Seats: 1
- Landing gear: fixed
- Engine: Kfm 107E (piston); 0 hours total
The flight
- Departed from: EAU at 5:00 pm
- Destination: EAU
- Flight plan: none
- Runway 22, 7,301 ft by 150 ft
Weather at the time
- Light: daylight
- Wind: from 360° at 3 knots
- Visibility: 20 statute miles
- Sky: scat at 5,000 ft
- Temperature: 70°F (21°C), dew point 45°F (7°C)
- Altimeter: 30.00 inHg
- Observation at 4:51 pm from EAU, 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.
Other NTSB records under N3944C the same tail number, which may have belonged to a different aircraft at the time
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.