# NTSB OAK78DVG65: Bell 47G-3B, N73240, Angwin, CA, July 24, 1978

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 24, 1978
- Place: Angwin, CA · ANGWIN, CA
- Location: 38.5779° N, 122.4512° W: Placed by OpenAirDocs: center of Angwin, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.5779&lon=-122.4512&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report September 18, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 140641
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK78DVG65
- Page: https://openairdocs.org/ntsb/OAK78DVG65

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2065  78/7/24    ANGWIN,CA           BELL 47G-3B         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 51, 1043
        TIME - 1600                    N73240              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 75 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - ANGWIN
        DEPARTURE POINT             INTENDED DESTINATION
          ANGWIN,CA                   LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ROLL OVER                                                TAKEOFF: VERTICAL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
        REMARKS- WIND GUSTS 10 TO 15K.
```

## Aircraft

- Registration: [N73240](https://openairdocs.org/aircraft/N73240), registered now, S/N 2772 (OpenAirDocs)
- Reported make and model: BELL 47G-3B
- Registry model: [Bell 47G-3B](https://openairdocs.org/model/bell-47g-3b) (registry code 1181026) (OpenAirDocs)
- Registry engine: [Lycoming TVO-435-GIA](https://openairdocs.org/engine/lycoming-tvo-435-gia) (registry code 41526, turbo-prop) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Angwin

## 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 19780724023789A](https://openairdocs.org/incident/19780724023789A), Jul 24, 1978: Bell 47B3, Angwin, CA, Substantial damage. Wind gusts 10 to 15K.

## Other investigations on N73240 (2)

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 LAX95LA100](https://openairdocs.org/ntsb/LAX95LA100), Feb 7, 1995: Bell 47G-3B (N73240), China Lake, CA, substantial damage. Probable cause: the pilot's misjudgement of the clearance between the main rotor and a tree while maneuvering at low altitude to herd animals.
- [NTSB LAX68A0020](https://openairdocs.org/ntsb/LAX68A0020), Aug 17, 1967: Bell 47G3B1 (N73240), Gilbert, AZ, 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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