# NTSB CHI90LA267: Cessna 182, N6873M, Troy, MI, September 16, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 16, 1990, 12:44 local (16:44 UTC)
- Place: Troy, MI
- Coordinates: 42.559741, -83.119812 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.5597&lon=-83.1198&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 30, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 14777
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI90LA267
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/14777/pdf
- Page: https://openairdocs.org/ntsb/CHI90LA267

## Probable cause

A LOSS OF ENGINE POWER DUE TO FAILURE OF THE ROCKER ARM BOSSES ON THE #2 CYLINDER.

## Sequence of events

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

- Loss of engine power(partial) - mech failure/malf, takeoff - initial climb
  - engine assembly,rocker arm/tappet - failure,total (cause)
- Forced landing, maneuvering - turn to landing area (emergency)
- In flight collision with terrain/water, landing

## Analysis

SHORTLY AFTER TAKEOFF, DURING INITIAL CLIMB, THE PLT SAID THAT THE ENGINE BEGAN TO SPUTTER AND RUN ROUGH. HE MADE A TURN TO RETURN FOR LANDING, BUT WAS TOO HIGH AND FAST, AND OVERSHOT THE AIRPORT. AN EMERGENCY LDG WAS ATTEMPTED IN A NEARBY FIELD WHICH RESULTED IN SUBSTANTIAL DAMAGE TO THE ACFT. POST-ACCIDENT INVESTIGATION REVEALED THE ROCKER ARM BOSSES ON # 2 CYLINDER HAD FAILED, WHICH CAUSED THE PARTIAL POWER LOSS AND ENGINE ROUGHNESS.

## Aircraft

- Registration: [N6873M](https://openairdocs.org/deregistered/N6873M-2013-11-06), registration cancelled 2013-11-06, S/N 18263872, built 1975 (OpenAirDocs)
- Reported make and model: CESSNA 182
- Registry model: [Cessna 182P](https://openairdocs.org/model/cessna-182p) (registry code 2075816) (OpenAirDocs)
- Registry engine: [Continental O-470 series](https://openairdocs.org/engine/continental-o-470-series) (registry code 17026, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 18263872
- Airframe hours: 1586
- Engines: CONTINENTAL O-470-S 230 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Kurvi, Paavo E.
- Registered owner: Kurvi, Daavo E
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, August 1, 1990, 7 hours before
- Destination: CYAM, SAULT ST. MARIE
- Flight plan: IFR
- Airport: NONE

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 50; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 652 total, 440 in this make and model, 522 as pilot in command, 11 in the last 90 days, 2 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 20° at 12 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Temperature: 52 °F, dew point 45 °F
- Altimeter: 29.00 inHg
- Observed at: PTK, 10 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 19900916039829A](https://openairdocs.org/incident/19900916039829A), Sep 16, 1990: Cessna 182P, Troy, MI, Substantial damage. Engine failed on climbout. Turned back to airport but too high and overshot runway. Cylinder rocker arm failed.

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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