# NTSB MKC76FTK33: Cessna 310L, N3331X, Carpenter, SD, August 21, 1976

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 21, 1976
- Place: Carpenter, SD · CARPENTER, SD
- Location: 44.6375° N, 97.9168° W: Placed by OpenAirDocs: center of Carpenter, SD, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.6375&lon=-97.9168&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report January 21, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 156195
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC76FTK33
- Page: https://openairdocs.org/ntsb/MKC76FTK33

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3557  76/8/21    CARPENTER,SD        CESSNA 310L         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, FL.INSTR.,
        TIME - 1256                    N3331X              PX-  0  0  0  CORP/EXEC                 AGE 46, 18575 TOTAL
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            HOURS, 3050 IN TYPE,
                                                                                                   INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          SIOUX FALLS,SD              ABERDEEN,SD
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: PROPELLER                       IN FLIGHT: NORMAL CRUISE
           AIRFRAME FAILURE: IN FLIGHT                              IN FLIGHT: NORMAL CRUISE
        PROBABLE CAUSE(S)
           PERSONNEL - PRODUCTION-DESIGN-PERSONNEL: OTHER
           POWERPLANT - PROPELLER AND ACCESSORIES: HUBS
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
        FACTOR(S)
           POWERPLANT - ENGINE STRUCTURE: MOUNT AND VIBRATION ISOLATORS
           MISCELLANEOUS ACTS,CONDITIONS - BENT
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- ENG COUNTERWEIGHT DAMPERS FOUND OUT OF TOLERANCE. ENGINE MOUNT STRUCTURE BENT.FATIGUED PROP HUB.
```

## Aircraft

- Registration: N3331X (not matched to a registry record)
- Reported make and model: CESSNA 310L
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

## 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 19760821031289A](https://openairdocs.org/incident/19760821031289A), Aug 21, 1976: Cessna 310L, Carpenter, SD, Substantial damage. Eng counterweight dampers found out of tolerance. Engine mount structure bent. Fatigued prop hub.

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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