# NTSB LAX71DUM06: Bell 47G5, N7840S, Imperial, CA, July 19, 1970

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 19, 1970
- Place: Imperial, CA · IMPERIAL, CA
- Location: 32.8388° N, 115.5720° W: Placed by OpenAirDocs: center of Imperial, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=32.8388&lon=-115.5720&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report June 16, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 191219
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX71DUM06
- Page: https://openairdocs.org/ntsb/LAX71DUM06

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3422  70/7/19    IMPERIAL,CALIF      BELL 47G5           CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 34, 3925
        TIME - 1445                    N7840S              PX-  0  0  2  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 600 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - IMPERIAL CO.
        DEPARTURE POINT             INTENDED DESTINATION
          BRAWLEY,CALIF               IMPERIAL,CALIF
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            LANDING: FINAL APPROACH
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           PILOT IN COMMAND - MISMANAGEMENT OF FUEL
           MISCELLANEOUS ACTS,CONDITIONS - MISCALCULATED FUEL CONSUMPTION
           MISCELLANEOUS ACTS,CONDITIONS - FUEL EXHAUSTION
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
        REMARKS- PLT ESTIMATED 8 MIN FLT,10 MIN FUEL ON BOARD.REAR CROSS TUBES BENT,TAIL BOOM CUT OFF BY MAIN ROTOR
```

## Aircraft

- Registration: [N7840S](https://openairdocs.org/deregistered/N7840S-2018-03-06), registration cancelled 2018-03-06, S/N 7861, built 1967 (OpenAirDocs)
- Reported make and model: BELL 47G5
- Registry model: [Bell 47G-5](https://openairdocs.org/model/bell-47g-5) (registry code 1181032) (OpenAirDocs)
- Registry engine: [Lycoming VO-435 series](https://openairdocs.org/engine/lycoming-vo-435-series) (registry code 41525, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Imperial Co.

## Other investigations on N7840S (4)

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 CHI86FA017](https://openairdocs.org/ntsb/CHI86FA017), Oct 27, 1985: Bell 47G-5 (N7840S), Plainfield, WI, destroyed, 1 fatal
- [NTSB CHI73DEP66](https://openairdocs.org/ntsb/CHI73DEP66), Jun 24, 1973: Bell 47G-5 (N7840S), Appleton, WI, substantial damage
- [NTSB MKC73FER04](https://openairdocs.org/ntsb/MKC73FER04), Jul 5, 1972: EL Tomcat MK6B (N7840S), Miesville, MN, destroyed
- [NTSB MKC72DER18](https://openairdocs.org/ntsb/MKC72DER18), Aug 25, 1971: Bell 47G-5 (N7840S), Blomkist, MN, destroyed

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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