# NTSB NYC65A0146: Bell 47G-4, N73996, East Syracuse, NY, June 10, 1965

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: June 10, 1965
- Place: East Syracuse, NY · EAST SYRACUSE, NY
- Location: 43.0638° N, 76.0698° W: Placed by OpenAirDocs: center of East Syracuse, NY, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.0638&lon=-76.0698&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 30, 1965
- Report: Brief approved by the director
- NTSB case key (mKey): 178248
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC65A0146
- Page: https://openairdocs.org/ntsb/NYC65A0146

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0745  65/6/10    EAST SYRACUSE NY    BELL 47G-4          CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, FL.INSTR.,
        TIME - 1705                    N73996              PX-  0  0  0  DEMONSTRATION             AGE 30, 3181 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            500 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - TIMBELLO HELIPORT
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      TAKEOFF: INITIAL CLIMB
           COLLIDED WITH: WIRES/POLES                               LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
          ROTORCFT-MAIN ROTOR DRIVE FLANGE SCREWS FAILED.
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: CLUTCH ASSEMBLY
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OBJECTS OR OBSTRUCTIONS
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SHEARED
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
```

## Aircraft

- Registration: N73996 (not matched to a registry record)
- Reported make and model: BELL 47G-4
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Timbello Heliport

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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