# NTSB LAX87LA246: Beech V35, N111MS, Clearlake, CA, June 27, 1987

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 27, 1987, 13:00 local (20:00 UTC)
- Place: Clearlake, CA
- Coordinates: 38.960746, -122.639274 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.9607&lon=-122.6393&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report August 31, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 25620
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX87LA246
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/25620/pdf
- Page: https://openairdocs.org/ntsb/LAX87LA246

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, cruise - normal
  - ignition system,spark plug - other (contributing factor)
  - fuel system,injector - foreign object (contributing factor)
  - engine assembly,cylinder - overtemperature (cause)
  - engine assembly,cylinder - leak (contributing factor)
  - fuel system,screen - foreign object (contributing factor)
  - fuel system,tank - contamination (contributing factor)
  - aircraft preflight - poor, pilot in command (contributing factor)
- Forced landing, descent - emergency
- On ground/water collision with object, landing - roll
  - object - fence (contributing factor)

## Analysis

DURING A CROSS COUNTRY FLIGHT THE ENGINE EXPERIENCED A LOSS OF POWER. THE PLT MADE A FORCED LANDING ON A ROAD WHERE DURING THE LANDING ROLL THE ACFT COLLIDED WITH A FENCE AND EVENTUALLY CAME TO REST IN A DITCH. INSPECTION OF THE ENGINE REVEALED EXTENSIVE DETONATION DAMAGE IN CYLINDERS 3, 4, AND 6. A FUEL SAMPLE WAS TAKEN WHICH REVEALED A NOTICABLE QUANTITY OF RESIDUE PARTICLES CONTAINING SILICON, IRON, AND ALUMINUM. THE SAMPLE MET THE MINIMUM ASTM STANDARDS FOR 100LL FUEL.

## Aircraft

- Registration: [N111MS](https://openairdocs.org/aircraft/N111MS), registered now, S/N D-8249, built 1966 (OpenAirDocs)
- Reported make and model: BEECH V35
- Registry model: [Beech V35](https://openairdocs.org/model/beech-v35) (registry code 1151538) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: D-8249
- Airframe hours: 2855
- Engines: CONTINENTAL IO-520-B 285 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Smith, Michael D.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, April 1, 1987, 100 hours before
- Departed: O01, SANTA ROSA, CA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 40; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 13,050 total, 7,000 in this make and model, 13,050 as pilot in command, 150 in the last 90 days, 75 in the last 30 days, 8 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 160° at 8 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Temperature: 68 °F, dew point 55 °F
- Altimeter: 30.00 inHg
- Observed at: STS, 6 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 19870627031899A](https://openairdocs.org/incident/19870627031899A), Jun 27, 1987: Beech V35, Clearlake, CA, Substantial damage. Loss of engine power. Forced landing. Collided with a fence during landing roll on a dirt road.

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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