# NTSB UNK71X0109: Bell 47G-4A, N4002G, Angola, Angola, June 8, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: June 8, 1971
- Place: Angola, Angola · ANGOLA,AFRICA, Angola
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report July 31, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 162198
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK71X0109
- Page: https://openairdocs.org/ntsb/UNK71X0109

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
6-0058   71/6/8    ANGOLA,AFRICA       BELL 47G-4A         CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 43, 5431
        TIME - 1430                    N4002G              PX-  0  0  2  CTR CARGO-D               TOTAL HOURS, 3227 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          CABINDA,ANGOLA             UNKNOWN/NOT REPORTED
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
        REMARKS- INVESTIGATION UNDER JURISDICTION OF GOVT OF ANGOLA.
```

## Aircraft

- Registration: [N4002G](https://openairdocs.org/deregistered/N4002G-2018-03-23), registration cancelled 2018-03-23, S/N 6529, built 1966 (OpenAirDocs)
- Reported make and model: BELL 47G-4A
- Registry model: [Bell 47G-3B-1](https://openairdocs.org/model/bell-47g-3b-1) (registry code 1181028) (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

## Other investigations on N4002G (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 ERA15LA296](https://openairdocs.org/ntsb/ERA15LA296), Aug 3, 2015: Bell 47G 3B 1 (N4002G), Camden, AL, substantial damage. Probable cause: A failure of the helicopter's hydraulic flight control systems for reasons that could not be determined due to the fire damage, and the pilot's inability to turn off the hydraulic system to relieve…
- [NTSB ATL03LA007](https://openairdocs.org/ntsb/ATL03LA007), Oct 19, 2002: Bell 47G3B1 (N4002G), Highfalls, GA, substantial damage. Probable cause: The pilots inadequate fuel management, and subsequent loss of engine power due to fuel exhaustion, and a in-flight collision with trees during an autorotation. A factor was the pilot's failure to…
- [NTSB FTW99TA194](https://openairdocs.org/ntsb/FTW99TA194), Jul 17, 1999: Bell 47G-3B-1 (N4002G), Sour Lake, TX, substantial damage. Probable cause: The pilot's failure to adequately preflight the helicopter's fuel system resulting in the total loss of engine power as a result of water contamination. Factors were the incorrect filter installed on…
- [NTSB FTW79FRG13](https://openairdocs.org/ntsb/FTW79FRG13), Jan 20, 1979: Bell 47G-4A (N4002G), Falfurrias, TX, 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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