# NTSB OAK66A0046: Bell 47G-3, N8437E, Sierra City, CA, March 30, 1966

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 30, 1966
- Place: Sierra City, CA · SIERRA CITY, CA
- Location: 39.5727° N, 120.6276° W: Placed by OpenAirDocs: center of Sierra City, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.5727&lon=-120.6276&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report August 22, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 172971
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK66A0046
- Page: https://openairdocs.org/ntsb/OAK66A0046

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0174  66/3/30  NR.SIERRA CITY CALIF  BELL 47G-3          CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 62, 1006
        TIME - 1450                    N8437E              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 782 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - JACKSON L.HELIPRT
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: RUNNING
           HARD LANDING                                             TAKEOFF: ABORTED
        PROBABLE CAUSE(S)
          PWR PLT-TURBO SUPERCHARGER WASTE GATE VALVE.
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           TERRAIN - ROUGH/UNEVEN
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- SUPRCHRGER-AIR RESEARCH MODEL T-902 PN402420-2.
```

## Aircraft

- Registration: [N8437E](https://openairdocs.org/deregistered/N8437E-2014-11-20), registration cancelled 2014-11-20, S/N 2608, built 1960 (OpenAirDocs)
- Reported make and model: BELL 47G-3
- Registry model: [Bell 47G-3](https://openairdocs.org/model/bell-47g-3) (registry code 1181024) (OpenAirDocs)
- Registry engine: [Franklin 6VS-335 series](https://openairdocs.org/engine/franklin-6vs-335-series) (registry code 27040, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Jackson L.Heliprt

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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