Amateur-built MONI accident near Tooele, Utah, April 15, 1987
On April 15, 1987 at about 3:30 pm local time, a amateur-built MONI, registered N96606, was substantially damaged in an accident near Tooele, Utah. It was a personal flight under general aviation rules (Part 91). 1 person had minor injuries. 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
- April 15, 1987 · about 3:30 pm local time
- Place
- Tooele, Utah · map
- Type
- Accident
- Injuries
- 1 person had minor injuries.
- Weather
- visual conditions (good weather)
- Aircraft
- Amateur-built MONI
- Registration
- N96606 · no longer on the register · serial 00228
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE PRIVATE PLT WAS CRUISING THE LOCAL AREA NEAR HIS HOME IN HIS HOMEBUILT EXPERIMENTAL MONI. THE NEWLY INSTALLED ENGINE BEGAN TO RUN ROUGH. THIS ENGINE IS NOT A TRADITIONAL ACFT ENGINE AND WAS A TWO CYCLE, TWO CYLINDER ENGINE MANUFACTURED IN ITALY, WITH AN ADVERTISED 25 HORSEPOWER. A MIXTURE CONTROL IS REMOTED TO THE COCKPIT AND THE PLT TRIED TO ADJUST THE MIXTURE. SECONDS LATER THE ENGINE QUIT. THE PLT TRIED TO GLIDE TO A LOCAL ARPT. THERE IS A POWERLINE ACROSS THE APPROACH TO THE RWY AND THE ACFT WAS TOO LOW TO CLEAR THE WIRES. WHEN THE PLT TURNED TO AVOID THE WIRES, THE ACFT STALLED. THE ACFT IMPACTED ALMOST 90 DEGREES NOSE DOWN IN A PASTURE.
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: 320 hours in all; 121 in this make and model
- Medical certificate: Class 3 (valid medical--no waivers/lim.)
- Seat: ctr
The aircraft
- Airframe total time: 121 hours
- Last inspection: annual inspection, April 17, 1986
- Maximum gross weight: 600 lb
- Seats: 1
- Landing gear: fixed
- Engine: Kfm 107E (piston); 0 hours total
The flight
- Departed from: UT29 Bollinder Field UT at 3:00 pm
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 160° at 7 knots
- Visibility: 30 statute miles
- Sky: scat at 20,000 ft
- Temperature: 63°F (17°C), dew point 30°F (-1°C)
- Altimeter: 30.00 inHg
- Observation at 3:50 pm from SLC, 25 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.