# NTSB NYC65A0131: Bell 47G4, N1151W, West Mifflin, PA, April 29, 1965

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 29, 1965
- Place: West Mifflin, PA · WEST MIFFLIN, PA
- Location: 40.3574° N, 79.9056° W: Placed by OpenAirDocs: center of West Mifflin, PA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.3574&lon=-79.9056&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report May 17, 1965
- Report: Brief approved by the director
- NTSB case key (mKey): 178006
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC65A0131
- Page: https://openairdocs.org/ntsb/NYC65A0131

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0137  65/4/29    WEST MIFFLIN PA     BELL 47G4           CR-  0  0  2  NONCOMMERCIAL             AIRLINE TRANSPORT, AGE
        TIME - 1800                    N1151W              PX-  0  0  0  PRACTICE                  32, 3006 TOTAL HOURS, 103
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - ALLEGHENY COUNTY
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
          PILOT-IMPROPERLY EXECUTED AUTOROTATIVE LANDING.
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SIMULATED CONDITIONS
        REMARKS- OWNER AT CONTROLS AT TIME OF ACCIDENT.
```

## Aircraft

- Registration: [N1151W](https://openairdocs.org/deregistered/N1151W-2006-10-16), registration cancelled 2006-10-16, S/N 3328, built 1964 (OpenAirDocs)
- Reported make and model: BELL 47G4
- 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
- Airport: Allegheny County

## Other investigations on N1151W (3)

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 MIA82DA181](https://openairdocs.org/ntsb/MIA82DA181), Sep 13, 1982: Bell 47G4 (N1151W), Madison, FL, substantial damage
- [NTSB MIA82DA133](https://openairdocs.org/ntsb/MIA82DA133), Jun 11, 1982: Bell 47G-4 (N1151W), N. Greenville, FL, substantial damage
- [NTSB NYC65A0109](https://openairdocs.org/ntsb/NYC65A0109), Feb 20, 1965: Bell 47G4 (N1151W), Donegal, PA, substantial damage

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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