# NTSB OAK67A0071: Bell 47D1, N74123, Martinez, CA, March 25, 1967

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: March 25, 1967
- Place: Martinez, CA · MARTINEZ, CA
- Location: 37.9982° N, 122.1142° W: Placed by OpenAirDocs: center of Martinez, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.9982&lon=-122.1142&mi=10
- Phase of flight: [Uncontrolled descent](https://openairdocs.org/ntsb-phases/650) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 3 fatal
- Status: Completed, report July 1, 1968
- Report: Brief approved by the director
- NTSB case key (mKey): 117899
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK67A0071
- Page: https://openairdocs.org/ntsb/OAK67A0071

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-1144  67/3/25    MARTINEZ,CALIF      BELL 47D1           CR-  1  0  0  NONCOMMERCIAL             COMMERCIAL, AGE 48, 538
        TIME - 1800                    N74123              PX-  2  0  0  BUSINESS                  TOTAL HOURS, 21 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - BUCHANAN FIELD
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: UNCONTROLLED DESCENT
        PROBABLE CAUSE(S)
           MISCELLANEOUS - UNDETERMINED
        REMARKS- SEVERE BLADE FLAPPING FOR CAUSES UNDETERMINED.
```

## Aircraft

- Registration: [N74123](https://openairdocs.org/deregistered/N74123-2017-02-04), registration cancelled 2017-02-04, S/N WH5008, built 1963 (OpenAirDocs)
- Reported make and model: BELL 47D1
- Registry model: [Bell 47D1](https://openairdocs.org/model/bell-47d1) (registry code 1180802) (OpenAirDocs)
- Registry engine: [Franklin 6V4 series](https://openairdocs.org/engine/franklin-6v4-series) (registry code 27033, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Destroyed
- Airport: Buchanan Field

## Other investigations on N74123 (3)

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 MIA78FKG74](https://openairdocs.org/ntsb/MIA78FKG74), Aug 19, 1978: Bell 47D1 (N74123), Hartwell, GA, substantial damage
- [NTSB MIA76DLA48](https://openairdocs.org/ntsb/MIA76DLA48), May 21, 1976: Bell 47D-1 (N74123), Lake Butler, FL, substantial damage
- [NTSB MIA76DLA08](https://openairdocs.org/ntsb/MIA76DLA08), Aug 21, 1975: Bell 47D1 (N74123), Monticello, FL, 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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