# NTSB NYC74FFJ18: Hiller Acft UH-12B, N33616, Dansville, NY, November 6, 1973

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: November 6, 1973
- Place: Dansville, NY · DANSVILLE, NY
- Location: 42.5625° N, 77.6969° W: Placed by OpenAirDocs: center of Dansville, NY, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.5625&lon=-77.6969&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed, report February 12, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 187896
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC74FFJ18
- Page: https://openairdocs.org/ntsb/NYC74FFJ18

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3839   73/11/6   DANSVILLE,NY        HILLER ACFT UH-12B  CR-  0  0  2  NONCOMMERCIAL             COMMERCIAL, AGE 41, 3967
        TIME - 0830                    N33616              PX-  0  0  0  OTHER                     TOTAL HOURS, 855 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - DANSVILLE
        DEPARTURE POINT             INTENDED DESTINATION
          DANSVILLE,NY                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: TAIL ROTOR                      IN FLIGHT: NORMAL CRUISE
           COLLISION WITH GROUND/WATER: UNCONTROLLED                LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: TAIL ROTOR GEAR BOX
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        REMARKS- DURING FAA CERTIFICATION FLT,TAIL ROTOR FAILED, PIC LOST DIR CONTROL.ACFT ABT 20FT AGL.
```

## Aircraft

- Registration: [N33616](https://openairdocs.org/aircraft/N33616), registered now, S/N 720, built 1955 (OpenAirDocs)
- Reported make and model: HILLER ACFT UH-12B
- Registry model: [Hiller UH-12B](https://openairdocs.org/model/hiller-uh-12b) (registry code 4360110) (OpenAirDocs)
- Registry engine: [Franklin 6A&6V335 series](https://openairdocs.org/engine/franklin-6a-6v335-series) (registry code 27020, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Dansville

## 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 19731106041329A](https://openairdocs.org/incident/19731106041329A), Nov 6, 1973: Hiller UH12C, Dansville, NY, Destroyed. During FAA certification flt,tail rotor failed, PIC lost dir control. Acft abt 20FT AGL.

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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