# NTSB OAK76DVG24: Stinson 108-3, N6768M, Walnut Grove, CA, August 29, 1975

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: August 29, 1975
- Place: Walnut Grove, CA · WALNUT GROVE, CA
- Location: 38.2543° N, 121.5358° W: Placed by OpenAirDocs: center of Walnut Grove, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.2543&lon=-121.5358&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 1 uninjured
- Status: Completed, report October 24, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 150818
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK76DVG24
- Page: https://openairdocs.org/ntsb/OAK76DVG24

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2767  75/8/29  NR.WALNUT GROVE,CA    STINSON 108-3       CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 54, 1718
        TIME - 1845                    N6768M              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 79 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          RED BLUFF,CA                TRACY,CA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: MASTER AND CONNECTING RODS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           TERRAIN - ROUGH/UNEVEN
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- NR 4 CONROD CAP BOLT FAILED.
```

## Aircraft

- Registration: [N6768M](https://openairdocs.org/deregistered/N6768M-2013-11-12), registration cancelled 2013-11-12, S/N 108-4768, built 1948 (OpenAirDocs)
- Reported make and model: STINSON 108-3
- Registry model: [Stinson 108-3](https://openairdocs.org/model/stinson-108-3) (registry code 9230408) (OpenAirDocs)
- Registry engine: [Franklin 6A4165 series](https://openairdocs.org/engine/franklin-6a4165-series) (registry code 27025, reciprocating) (OpenAirDocs)
- 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 19750829030369A](https://openairdocs.org/incident/19750829030369A), Aug 29, 1975: Univar 1083, Walnut Grove, CA, Substantial damage. Nr 4 conrod cap bolt 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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