# NTSB UNK65X1099: Bell 47J2, N73216, Philadelphia, PA, December 22, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 22, 1964
- Place: Philadelphia, PA · PHILADELPHIA, PA
- Location: 39.9523° N, 75.1638° W: Placed by OpenAirDocs: center of Philadelphia, PA, within about 7 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.9523&lon=-75.1638&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report March 9, 1965
- Report: Brief approved by the director
- NTSB case key (mKey): 186050
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK65X1099
- Page: https://openairdocs.org/ntsb/UNK65X1099

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0943  64/12/22   PHILADELPHIA PA     BELL 47J2           CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, AGE 31, 2500
        TIME - 1720                    N73216              PX-  0  0  2  POLICE PATROL             TOTAL HOURS, 200 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - PHILADELPHIA INTL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: MASTER AND CONNECTING RODS
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
        FACTOR(S)
           TERRAIN - ROUGH/UNEVEN
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- #1 CYLINDER CONNECTING ROD FAILED.
```

## Aircraft

- Registration: [N73216](https://openairdocs.org/deregistered/N73216-1982-01-04), registration cancelled 1982-01-04, S/N 1859 (OpenAirDocs)
- Reported make and model: BELL 47J2
- Registry model: [Bell 47J-2](https://openairdocs.org/model/bell-47j-2) (registry code 1181104) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Philadelphia Intl

## Other investigations on N73216 (1)

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 NYC76FHJ34](https://openairdocs.org/ntsb/NYC76FHJ34), Feb 12, 1976: Bell 47J (N73216), New York, NY, 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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