# NTSB NYC70AN115: Bell 47J-2, N73949, Piscataway, NJ, April 22, 1970

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 22, 1970
- Place: Piscataway, NJ · PISCATAWAY, NJ
- Location: 40.4993° N, 74.3990° W: Placed by OpenAirDocs: center of Piscataway, NJ, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.4993&lon=-74.3990&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report June 30, 1970
- Report: Brief approved by the director
- NTSB case key (mKey): 140032
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC70AN115
- Page: https://openairdocs.org/ntsb/NYC70AN115

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0343  70/4/22    PISCATAWAY,NJ       BELL 47J-2          CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 38, 3900
        TIME - 1330                    N73949              PX-  0  0  3  AIR TAXI-PASSG            TOTAL HOURS, 2000 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          PISCATAWAY,NJ               NEW YORK,NY
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           MISCELLANEOUS                                            TAKEOFF: INITIAL CLIMB
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- FREE WHEELING GR,P/N47-620-531-1,IN M/R DRIVE SYSTEM BROKE.HARD LDG DUE TO LOSS OF DRIVE TO M/R.
```

## Aircraft

- Registration: [N73949](https://openairdocs.org/deregistered/N73949-1996-05-30), registration cancelled 1996-05-30, S/N 2837 (OpenAirDocs)
- Reported make and model: BELL 47J-2
- Registry model: [Bell 47J-2](https://openairdocs.org/model/bell-47j-2) (registry code 1181104) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: 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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