# NTSB NYC78FHM04: Hiller Acft UH-12C, N2686, Lincoln Park, NJ, September 6, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: September 6, 1977
- Place: Lincoln Park, NJ · LINCOLN PARK, NJ
- Location: 40.9238° N, 74.3042° W: Placed by OpenAirDocs: center of Lincoln Park, NJ, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.9238&lon=-74.3042&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report November 8, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 144267
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC78FHM04
- Page: https://openairdocs.org/ntsb/NYC78FHM04

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4282   77/9/6    LINCOLN PARK,NJ     HILLER ACFT UH-12C  CR-  0  0  1  MISCELLANEOUS             PRIVATE, AGE 39, 155
        TIME - 1415                    N2686               PX-  0  0  1  POLICE PATROL             TOTAL HOURS, UNK/NR IN
                                       DAMAGE-DESTROYED    OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - LINCOLN PARK
        DEPARTURE POINT             INTENDED DESTINATION
          LINCOLN PARK,NJ             LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      TAKEOFF: INITIAL CLIMB
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: CLUTCH ASSEMBLY
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
        REMARKS- THE AUTOMATIC CENTRIFUGAL MERCURY CLUTCH FRICTION SHOES WORN BEYOND MFG LIMITS. AIRSPEED LOW.
```

## Aircraft

- Registration: [N2686](https://openairdocs.org/deregistered/N2686-2020-01-31), registration cancelled 2020-01-31, S/N 168 (OpenAirDocs)
- Reported make and model: HILLER ACFT UH-12C
- Registry model: [Hiller UH-12A](https://openairdocs.org/model/hiller-uh-12a) (registry code 4360104) (OpenAirDocs)
- Registry engine: [Franklin 6V 350 series](https://openairdocs.org/engine/franklin-6v-350-series) (registry code 27043, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Destroyed
- Airport: Lincoln Park

## 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 19770906039379A](https://openairdocs.org/incident/19770906039379A), Sep 6, 1977: Hiller UH12A, NJ, Substantial damage

## Other investigations on N2686 (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 CEN17LA375](https://openairdocs.org/ntsb/CEN17LA375), Sep 11, 2017: Hiller UH 12A (N2686), Griffith, IN, substantial damage. Probable cause: The loss of tail rotor thrust due to a failed tail rotor driveshaft, which resulted in a loss of tail rotor control and a hard landing.

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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