# NTSB DEN87LA097: Mclachlan Moni, N96606, Tooele, UT, April 15, 1987

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: April 15, 1987, 09:30 local (15:30 UTC)
- Place: Tooele, UT
- Coordinates: 40.569541, -112.330642 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.5695&lon=-112.3306&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report November 8, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 17201
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN87LA097
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17201/pdf
- Page: https://openairdocs.org/ntsb/DEN87LA097

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of engine power(total) - nonmechanical, cruise - normal
  - reason for occurrence undetermined (cause)
- Forced landing, descent - emergency
- Loss of control - in flight, maneuvering
  - stall - inadvertent, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

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.

## Aircraft

- Registration: [N96606](https://openairdocs.org/deregistered/N96606-2013-06-14), registration cancelled 2013-06-14, S/N 00228 (OpenAirDocs)
- Reported make and model: MCLACHLAN MONI
- Registry model: [Mclachlin Scott R MONI](https://openairdocs.org/model/mclachlin-scott-r-moni) (registry code 056595X) (OpenAirDocs)
- Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 00228
- Airframe hours: 121
- Engines: KFM 107E 25 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Scott R. Mclachlan
- Registered owner: Scott R. Mclachlan
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Annual, April 17, 1986
- Departed: UT29, BOLLINDER FIELD, UT

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 29; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: center; flight hours: 320 total, 121 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 160° at 7 knots
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 63 °F, dew point 30 °F
- Altimeter: 30.00 inHg
- Observed at: SLC, 25 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19870415010019A](https://openairdocs.org/incident/19870415010019A), Apr 15, 1987: Amtr MONI, Tooele, UT, Substantial damage. Lower loss in cruise. Stalled in a steep turn to avoid powerlines,impacting nose down in field. No engine problems

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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