# NTSB MKC86LA193: Cessna T210M, N6163N, Old Monroe, MO, September 23, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 22, 1986, 19:15 local (Sep 23, 1986, 00:15 UTC)
- Place: Old Monroe, MO
- Coordinates: 38.940845, -90.759437 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.9408&lon=-90.7594&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report April 25, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 34251
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC86LA193
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/34251/pdf
- Page: https://openairdocs.org/ntsb/MKC86LA193

## 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, descent - normal
  - engine assembly,valve,intake - failure,total (cause)
  - engine assembly,valve,intake - fatigue (cause)
- Forced landing, descent - normal
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - ditch (contributing factor)

## Analysis

THE PIC HAD INITIATED HIS DESCENT OT HIS DESTINATION ARPT WHEN HE RPTD EXPERIENCING ENG PBLMS. THE ROUGH RUNNING ENG FINALLY QUIT AND THE PIC MADE A FORCED LNDG TO AN OPEN FLD. THE SUBSEQUENT LNDG ENCOUNTERED A DITCH AND THE NOSE GEAR COLLAPSED. EXAM OF THE ENG REVEALED THAT THE EXHAUST VALVE OF ONE OF THE CYLINDERS HAD FAILED IN FATIGUE. METALLUGICAL EXAM NOTED THAT IT WAS A LOW STRESS, HIGH CYCLE FATIGUE FAILURE OF THE EXHAUST VALVE STEM NEAR THE VALVE FACE. THE ENG HAD BEEN COMPLETELY OVHLD 60 OPERATIONAL FLT HRS PRIOR TO THIS FAILURE. VALVES UTILIZED DUG OVHL MET MNFGRS SPEC.

## Aircraft

- Registration: [N6163N](https://openairdocs.org/deregistered/N6163N-2016-11-04), registration cancelled 2016-11-04, S/N 21062934, built 1978 (OpenAirDocs)
- Reported make and model: CESSNA T210M
- Registry model: [Cessna T210M](https://openairdocs.org/model/cessna-t210m) (registry code 2073451) (OpenAirDocs)
- Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 21062934
- Airframe hours: 1973
- Engines: CONTINENTAL TSIO-520-R 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Operator: Roederer Aviation, Inc.
- Registered owner: Roederer Aviation Inc
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, April 7, 1986, 52 hours before
- Departed: PPQ, PITTSFIELD, IL
- Destination: SUS, ST. LOUIS, MO
- Airport: Sprit Of St. Louis

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 26; flight instructor, commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 2,215 total, 302 in this make and model, 2,037 as pilot in command, 164 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 70° at 7 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Altimeter: 29.00 inHg
- Observed at: STL, 8 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 19860922086379A](https://openairdocs.org/incident/19860922086379A), Sep 22, 1986: Cessna T210M, Old Monroe, MO, Substantial damage. The engine failed. The aircraft hit a ditch on landing. Valve stems failed in fatigue. Improper installation

## Other investigations on N6163N (1)

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.

- [NTSB IAD97LA005](https://openairdocs.org/ntsb/IAD97LA005), Oct 10, 1996: Cessna T210M (N6163N), Mentor, KY, substantial damage. Probable cause: the pilot's improper planning/decision, which resulted in fuel exhaustion and loss of engine power. Factors relating to the accident were: the inaccurate fuel quantity gage, and the light condition…

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.