# NTSB ANC76AA028: Bell 47G-4, N73279, Granite Mt., AK, August 27, 1975

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 27, 1975
- Place: Granite Mt., AK · GRANITE MT., AK
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report February 27, 1976
- Report: Brief approved by the director
- NTSB case key (mKey): 151374
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC76AA028
- Page: https://openairdocs.org/ntsb/ANC76AA028

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3908  75/8/27  NR.GRANITE MT.,AK     BELL 47G-4          CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 28, 2474
        TIME - 1700                    N73279              PX-  0  0  2  AIR TAXI-PASSG            TOTAL HOURS, 142 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         GRANITE MT.,AK               LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           ROLL OVER                                                LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           MISCELLANEOUS ACTS,CONDITIONS - WATER IN FUEL
        FACTOR(S)
           TERRAIN - ROUGH/UNEVEN
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- LND ON SLOPE.
```

## Aircraft

- Registration: [N73279](https://openairdocs.org/aircraft/N73279), registered now, S/N 3134 (OpenAirDocs)
- Reported make and model: BELL 47G-4
- Registry model: [Bell 47G-4](https://openairdocs.org/model/bell-47g-4) (registry code 1181030) (OpenAirDocs)
- Registry engine: [Lycoming VO-540 series](https://openairdocs.org/engine/lycoming-vo-540-series) (registry code 41534, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## 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 19750827042239A](https://openairdocs.org/incident/19750827042239A), Aug 27, 1975: Bell 47G4, Granite Mt., AK, Substantial damage. Lnd on slope.

## Other investigations on N73279 (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 LAX92LA396](https://openairdocs.org/ntsb/LAX92LA396), Sep 21, 1992: Bell 47-G4A (N73279), Volcano, HI, substantial damage. Probable cause: THE PILOT'S IMPROPER USE OF THE COLLECTIVE CONTROL AFTER INADVERTENTLY ENTERING A POWER SETTLING CONDITION.
- [NTSB ANC91LA041](https://openairdocs.org/ntsb/ANC91LA041), Mar 30, 1991: Bell 47 (N73279), Thompson Pass, AK, substantial damage. Probable cause: THE PILOT'S FAILURE TO MAINTAIN AIRCRAFT CONTROL AND IMPROPER FLARE DURING LANDING.

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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