# NTSB UNK64X1354: Hiller 12E, N9785C, Pomeroy, WA, April 17, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 17, 1964
- Place: Pomeroy, WA · POMEROY, WA
- Location: 46.4738° N, 117.5965° W: Placed by OpenAirDocs: center of Pomeroy, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=46.4738&lon=-117.5965&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 25, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 185024
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X1354
- Page: https://openairdocs.org/ntsb/UNK64X1354

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0332  64/4/17    POMEROY WASH        HILLER 12E          CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 40, 4000
        TIME - 1130                    N9785C              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 1000 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: WIRES/POLES                               IN FLIGHT: MANEUVER TO AVOID OBSTRUCTION
           HARD LANDING                                             LANDING: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OBJECTS OR OBSTRUCTIONS
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - UNKNOWN/NOT REPORTED       KIND OF OPERATION - DEFOLIATION (LIQUID)
          KIND OF CROP - OTHER                                     TYPE OF CHEMICAL USED - LIQUID CHEMICAL-NONTOXIC
```

## Aircraft

- Registration: [N9785C](https://openairdocs.org/aircraft/N9785C), registered now, S/N 2269 (OpenAirDocs)
- Reported make and model: HILLER 12E
- Registry model: [Hiller UH-12E](https://openairdocs.org/model/hiller-uh-12e) (registry code 4360122) (OpenAirDocs)
- Registry engine: [Lycoming VO-540 series](https://openairdocs.org/engine/lycoming-vo-540-series) (registry code 41534, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N9785C (4)

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 SEA04LA073](https://openairdocs.org/ntsb/SEA04LA073), Apr 26, 2004: Hiller UH-12E (N9785C), Haines, OR, substantial damage. Probable cause: A momentary partial loss of power for undetermined reason(s) and the pilot's failure to maintain adequate RPM during his autorotation landing.
- [NTSB SEA93LA181](https://openairdocs.org/ntsb/SEA93LA181), Aug 23, 1993: Hiller UH-12E (N9785C), Auburn, WA, substantial damage. Probable cause: FAILURE OF THE CONNECTING ROD BOLT. THE HIGH VEGETATION WAS A FACTOR.
- [NTSB SEA76FYC45](https://openairdocs.org/ntsb/SEA76FYC45), May 14, 1976: Hiller Acft UH-12E (N9785C), Tillamook, OR, destroyed
- [NTSB SEA66A0066](https://openairdocs.org/ntsb/SEA66A0066), Jun 13, 1966: Hiller UH-12E (N9785C), Huntington, OR, 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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