# NTSB NYC71FGM15: Bell 47G-4A, N4051G, Grove City, PA, September 28, 1970

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: September 28, 1970
- Place: Grove City, PA · GROVE CITY, PA
- Location: 41.1571° N, 80.0886° W: Placed by OpenAirDocs: center of Grove City, PA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.1571&lon=-80.0886&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report October 6, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 158909
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC71FGM15
- Page: https://openairdocs.org/ntsb/NYC71FGM15

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4542  70/9/28    GROVE CITY,PA       BELL 47G-4A         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 27, 2443
        TIME - 1425                    N4051G              PX-  0  0  1  CORP/EXEC                 TOTAL HOURS, 1910 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - ALLISON
        DEPARTURE POINT             INTENDED DESTINATION
          GROVE CITY,PA               PARKER,PA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: TAIL ROTOR                      TAKEOFF: VERTICAL
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           ROTORCRAFT - FLIGHT CONTROL SYSTEMS: TAIL ROTOR PITCH CONTROL SYSTEM
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           AIRPORTS/AIRWAYS/FACILITIES - AIRPORT CONDITIONS: OTHER
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
        REMARKS- TOOK OFF FROM MOBILE PLATFORM.LOST T/R CTL,CABLE FAILED.CONT FLT TO CLR PLATFORM BFOR AUTOROTATION
```

## Aircraft

- Registration: N4051G (not matched to a registry record)
- Reported make and model: BELL 47G-4A
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Allison

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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