# NTSB DEN85LA029: Cessna 182P, N21037, Snowville, UT, November 19, 1984

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: November 18, 1984, 17:50 local (Nov 19, 1984, 00:50 UTC)
- Place: Snowville, UT
- Coordinates: 41.809192, -112.869354 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=41.8092&lon=-112.8694&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16600
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN85LA029
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16600/pdf
- Page: https://openairdocs.org/ntsb/DEN85LA029

## 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
  - engine assembly,connecting rod - failure,total (cause)
  - procedures/directives - not followed, other person (contributing factor)
  - maintenance,service of aircraft/equipment - improper, other maintenance personnel (cause)
- Forced landing, descent - emergency
- Nose over, landing - roll

## Analysis

THE ACFT NOSED OVER DURING AN OFF ARPT FORCED LANDING AFTER THE ENGINE FAILED IN CRUISE FLT. THE ENGINE WAS DISASSEMBLEDAND EXAMINED ON 12/3/84. THE #3 AND #4 PISTON RODS WERE SEPARATED FROM THEIR CRANCKSHAFT JOURNALS. MOST OF THE ROD BEARINGS WERE WORN. THE ACFT HAD BEEN OPERATING IN AN ENVIROMENT WITH COLD WINTERS. THE ENGINE OPERATIONS MANUAL STATES THAT SAE 30 WEIGHT OIL OR 10W-30 ARE RECOMMENDED FOR OPERATIONS IN TEMPERATURES BELOW 40 DEGREES F. THE ENGINE HAD 40 WEIGHT OIL PUT IN AT THE LAST SEVERAL SERVICINGS. THE TEMPERATURE WAS BELOW 40 DEGREES THE DAY OF THE ACCIDENT.

## Aircraft

- Registration: N21037 (not matched to a registry record)
- Reported make and model: CESSNA 182P
- Category: Airplane
- Serial number: 3978
- Airframe hours: 3978
- Engines: CONTINENTAL O-470-R 230 horsepower reciprocating
- Damage: Destroyed
- Fire: In-Flight
- Flight: Part 135
- Registered owner: Sun Valley Aviation, Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, October 2, 1984, 25 hours before
- Departed: SLC, SALT LAKE CITY, UT
- Destination: SUN, HAILEY, ID
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 37; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 6,000 total, 2,056 in this make and model, 300 in the last 90 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: calm
- Visibility: 25 statute miles
- Lowest ceiling: 4,000 ft overcast
- Temperature: 36 °F
- Altimeter: 30.00 inHg

## 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 19841118063509A](https://openairdocs.org/incident/19841118063509A), Nov 18, 1984: Cessna 182P, Snowville, UT, Destroyed. Crashed during emergency landing when plane flipped over in a field. Number 4 connecting rod went through case.

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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