# NTSB CHI78FEK27: Hiller UH12E, N9759C, Findlay, OH, August 25, 1978

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 25, 1978
- Place: Findlay, OH · FINDLAY, OH
- Location: 41.0474° N, 83.6381° W: Placed by OpenAirDocs: center of Findlay, OH, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.0474&lon=-83.6381&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report February 5, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 139371
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI78FEK27
- Page: https://openairdocs.org/ntsb/CHI78FEK27

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3607  78/8/25  NR.FINDLAY,OH         HILLER UH12E        CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1820                    N9759C              PX-  0  0  0  ASSOC CROP CTL ACTIVITY   AGE 33, 3485 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            180 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         FINDLAY,OH                   LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: EN ROUTE TO TREAT CROP
           HARD LANDING                                             LANDING: ROLL-ON/RUN-ON
        PROBABLE CAUSE(S)
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: CLUTCH ASSEMBLY
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  100                       KIND OF OPERATION - FERTILIZING (LIQUID)
          KIND OF CROP - BEANS                                     TYPE OF CHEMICAL USED - LIQUID CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -NOT FASTENED                         GLOVES - NOT USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - SIDES                             TERRAIN-TYPE -LEVEL,FLAT
          ELEVATION-AREA BEING TREATED-FEET -  840
        REMARKS- ROTOR CLUTCH FAILED.
```

## Aircraft

- Registration: [N9759C](https://openairdocs.org/deregistered/N9759C-2013-05-30), registration cancelled 2013-05-30, S/N 2161, built 1962 (OpenAirDocs)
- Reported make and model: HILLER UH12E
- Registry model: [Hiller UH-12E](https://openairdocs.org/model/hiller-uh-12e) (registry code 4360122) (OpenAirDocs)
- Registry engine: [Lycoming VO-435 series](https://openairdocs.org/engine/lycoming-vo-435-series) (registry code 41525, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Smith Farm

## 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 19780825030279A](https://openairdocs.org/incident/19780825030279A), Aug 25, 1978: Hiller UH12E, Findlay, OH, Substantial damage. Rotor clutch failed.

## Other investigations on N9759C (2)

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 ANC72DAG11](https://openairdocs.org/ntsb/ANC72DAG11), Jul 20, 1971: Hiller 12-E4 (N9759C), Chitina, AK, substantial damage
- [NTSB OAK67A0011](https://openairdocs.org/ntsb/OAK67A0011), Jul 20, 1966: Hiller UH-12E (N9759C), Kahului, HI, substantial damage

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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