# NTSB OAK74DVG10: Bell 47G-3B, N7958J, Happy Camp, CA, August 20, 1973

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 20, 1973
- Place: Happy Camp, CA · HAPPY CAMP, CA
- Location: 41.8157° N, 123.3926° W: Placed by OpenAirDocs: center of Happy Camp, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.8157&lon=-123.3926&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report October 29, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 189061
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK74DVG10
- Page: https://openairdocs.org/ntsb/OAK74DVG10

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2721  73/8/20  NR.HAPPY CAMP,CALIF   BELL 47G-3B         CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 0930                    N7958J              PX-  0  0  1  ASSOC FIRE CTL ACTIVITY   AGE 23, 1800 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            186 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         HAPPY CAMP,CALIF             LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: OBJECT                                    LANDING: POWER-ON LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - SELECTED UNSUITABLE TERRAIN
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OBJECTS OR OBSTRUCTIONS
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
        REMARKS- MAIN ROTOR STRUCK OBSTRUCTIONS AT MOUNTAIN HELIPORT.
```

## Aircraft

- Registration: [N7958J](https://openairdocs.org/deregistered/N7958J-1974-03-29), registration cancelled 1974-03-29, S/N 6807 (OpenAirDocs)
- Reported make and model: BELL 47G-3B
- Registry model: [Bell 47G-3B-2](https://openairdocs.org/model/bell-47g-3b-2) (registry code 1181029) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Shasta Trinity

## 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 19730820026919A](https://openairdocs.org/incident/19730820026919A), Aug 20, 1973: Bell 47G3B2, Happy Camp, CA, Substantial damage. Main rotor struck obstructions at mountain heliport.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.