# NTSB UNK64X3844: Stinson 108-2, N975D, San Lucas, CA, September 7, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: September 7, 1964
- Place: San Lucas, CA · SAN LUCAS, CA
- Location: 36.1283° N, 121.0217° W: Placed by OpenAirDocs: center of San Lucas, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=36.1283&lon=-121.0217&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report November 18, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 182087
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X3844
- Page: https://openairdocs.org/ntsb/UNK64X3844

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2807   64/9/7  NR.SAN LUCAS CALIF    STINSON 108-2       CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 23, 255
        TIME - 1500                    N975D               PX-  0  0  2  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 80 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        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: PISTON,PISTON RINGS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- #1 PISTON FAILED AT PISTON PIN BOSS.
```

## Aircraft

- Registration: [N975D](https://openairdocs.org/aircraft/N975D), registered now, S/N 108-2975, built 1947 (OpenAirDocs)
- Reported make and model: STINSON 108-2
- Registry model: [Universal Stinson 108-2](https://openairdocs.org/model/universal-stinson-108-2) (registry code 9230416) (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

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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