# NTSB CHI93LA064: Cessna T210K, N732FB, Metropolis, IL, January 5, 1993

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: January 5, 1993, 08:40 local (14:40 UTC)
- Place: Metropolis, IL
- Coordinates: 37.149368, -88.710716 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=37.1494&lon=-88.7107&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report November 3, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 15645
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI93LA064
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/15645/pdf
- Page: https://openairdocs.org/ntsb/CHI93LA064

## Probable cause

THE FATIGUE FAILURE OF THE EXHAUST VALVE.

## 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,valve,exhaust - fatigue
  - engine assembly,valve,exhaust - failure,total (cause)
  - emergency procedure - performed, pilot in command
  - weather condition - clouds (contributing factor)
- Forced landing, descent - emergency
  - terrain condition - none suitable

## Analysis

THE PILOT STATED WHILE OPERATING IN CRUISE FLIGHT AT 9,000 FEET ON AN IFR FLIGHT PLAN, THE ENGINE '...GAVE A JOLT AND FAILED.'  HE REQUESTED AND RECEIVED VECTORS TOWARDS THE NEAREST AIRPORT.  HE REPORTED HE BROKE OUT OF THE CLOUDS AT 1,700 FEET MSL OVER HILLY WOODED TERRAIN.  HE MADE A FORCED LANDING IN A SMALL, MUDDY CORN FIELD.  THE AIRPLANE NOSED OVER DURING AN INTENTIONAL GROUND LOOP TO AVOID TREES AT THE END OF THE FIELD. POSTACCIDENT EXAMINATION REVEALED THE LOSS OF ENGINE POWER WAS DUE TO A FAILED EXHAUST VALVE IN THE #2 CYLINDER.  METALLURGICAL EXAMINATION OF THE FRACTURED VALVE REVEALED FATIGUE CRACKING INITIATING FROM MULTIPLE ORIGINS ON OPPOSITE SIDES OF THE FRACTURE FACE.  THE ENGINE HAD 1869 HOURS TOTAL TIME, WITH 671 HOURS SINCE MAJOR OVERHAUL.  EXAMINATION REVEALED NO MATERIAL IMPERFECTIONS, AND THE MATERIAL HARDNESS EXCEEDED MANUFACTURER'S MINIMUM SPECIFICATIONS.

## Aircraft

- Registration: [N732FB](https://openairdocs.org/deregistered/N732FB-2013-05-07), registration cancelled 2013-05-07, S/N 21061471, built 1976 (OpenAirDocs)
- Reported make and model: CESSNA T210K
- Registry model: [Cessna 210L](https://openairdocs.org/model/cessna-210l) (registry code 2073448) (OpenAirDocs)
- Category: Airplane
- Serial number: 21061471
- Airframe hours: 1869
- Engines: CONTINENTAL TSIO-520-B 285 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: William E. Dill
- Registered owner: Bowles, Myron
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, December 21, 1992, 98 hours before
- Departed: C24, DOWNER'S GROVE, IL
- Destination: HAB, HAMILTON, AL
- Flight plan: IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 59; airline transport; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 16,100 total, 597 in this make and model, 15,503 as pilot in command, 156 in the last 90 days, 41 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 10° at 8 knots
- Visibility: 8 statute miles
- Lowest ceiling: 1,100 ft overcast
- Temperature: 32 °F, dew point 27 °F
- Altimeter: 30.00 inHg
- Observed at: PAH, 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 19930105000579A](https://openairdocs.org/incident/19930105000579A), Jan 5, 1993: Cessna T210K, Metropolis, IL, Substantial damage. Engine swallowed a valve and quit IFR en route. Nosed over on forced landing. Metal pieces lodged in turbocharger.

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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