# NTSB MKC68D0438: Cessna 206, N5106U, E Prairie, MS, February 8, 1968

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: February 8, 1968
- Place: E Prairie, MS · E PRAIRIE, MS
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report March 13, 1969
- Report: Brief approved by the director
- NTSB case key (mKey): 111571
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC68D0438
- Page: https://openairdocs.org/ntsb/MKC68D0438

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4758   68/2/8    E PRAIRIE,MISS      CESSNA 206          CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 46, 800
        TIME - 1645                    N5106U              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, ALL IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: PROPELLER                       IN FLIGHT: NORMAL CRUISE
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           POWERPLANT - PROPELLER AND ACCESSORIES: BLADES
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
          PWR PLT-IMPROPERLY INSTALLED COUNTERWEIGHT PINS.
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
                                  PROP/ENGINE VIBRATION
        REMARKS- CRANKSHAFT IMBALANCE CAUSED PROP FAILURE.
```

## Aircraft

- Registration: [N5106U](https://openairdocs.org/deregistered/N5106U-2009-10-28), registration cancelled 2009-10-28, S/N 206-0106, built 1964 (OpenAirDocs)
- Reported make and model: CESSNA 206
- Registry model: [Cessna 206](https://openairdocs.org/model/cessna-206) (registry code 2073302) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed

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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