# NTSB NYC80FFJ10: Hiller Acft UH-12E, N705WA, N Cohocton, NY, June 29, 1980

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: June 29, 1980
- Place: N Cohocton, NY · N COHOCTON, NY
- Location: 42.5612° N, 77.4647° W: Placed by OpenAirDocs: center of North Cohocton, NY, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.5612&lon=-77.4647&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 2 uninjured
- Status: Completed, report September 23, 1980
- Report: Brief approved by the director
- NTSB case key (mKey): 129544
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC80FFJ10
- Page: https://openairdocs.org/ntsb/NYC80FFJ10

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2019  80/6/29    N COHOCTON,NY       HILLER ACFT UH-12E  CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, AGE 38, 950
        TIME - 1635                    N705WA              PX-  0  0  2  SEARCH AND RESCUE         TOTAL HOURS, UNK/NR IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          N COHOCTON,NY               LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: OTHER
           ROLL OVER                                                LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           POWERPLANT - ENGINE STRUCTURE: MASTER AND CONNECTING RODS
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY INSTALLED
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           TERRAIN - ROUGH/UNEVEN
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- 14HRS SMOH.NO 3 ROD BORED .010 OVERSIZE,INSTALLED ON CRANKSHAFT W STANDARD SIZE BEARING.
```

## Aircraft

- Registration: [N705WA](https://openairdocs.org/aircraft/N705WA), registered now, S/N 2346 (OpenAirDocs)
- Reported make and model: HILLER ACFT UH-12E
- Registry model: [Hiller UH-12E4](https://openairdocs.org/model/hiller-uh-12e4) (registry code 4360127) (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 19800629037209A](https://openairdocs.org/incident/19800629037209A), Jun 29, 1980: Hiller UH12, North Cohocton, NY, Substantial damage. Engine quit on low altitude police search. Made hard autorotate landing on a hill. Broken connecting rods.

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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