# NTSB NYC77DHA16: Bell 47G-4, N73292, Blairstown, NJ, February 16, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: February 16, 1977
- Place: Blairstown, NJ · BLAIRSTOWN, NJ
- Location: 40.9873° N, 74.9547° W: Placed by OpenAirDocs: center of Blairstown, NJ, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.9873&lon=-74.9547&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report April 22, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 157750
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC77DHA16
- Page: https://openairdocs.org/ntsb/NYC77DHA16

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0408  77/2/16    BLAIRSTOWN,NJ       BELL 47G-4          CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 28, 5674
        TIME - 1110                    N73292              PX-  0  0  1  POWER/PIPELINE            TOTAL HOURS, 642 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          FLANDERS,NJ                 BLAIRSTOWN,NJ
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: LOW PASS
           COLLIDED WITH: TREES                                     LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: MASTER AND CONNECTING RODS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- ENGINE NR 4 CONNECTING ROD FAILED AT THE BOLT HOLE PORTION OF THE ROD.
```

## Aircraft

- Registration: [N73292](https://openairdocs.org/deregistered/N73292-2014-11-17), registration cancelled 2014-11-17, S/N 3144, built 1964 (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 19770216003809A](https://openairdocs.org/incident/19770216003809A), Feb 16, 1977: Bell 47G4, Blairstown, NJ, Substantial damage. Engine nr 4 connecting rod failed at the bolt hole portion of the rod.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.