# NTSB LAX82FVG10: Hiller Acft UH-12E, N93478, Angels Camp, CA, December 10, 1981

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 10, 1981
- Place: Angels Camp, CA · ANGELS CAMP, CA
- Location: 38.0683° N, 120.5396° W: Placed by OpenAirDocs: center of Angels Camp, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.0683&lon=-120.5396&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report January 20, 1982
- Report: Brief approved by the director
- NTSB case key (mKey): 122988
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX82FVG10
- Page: https://openairdocs.org/ntsb/LAX82FVG10

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3156  81/12/10 NR.ANGELS CAMP,CA     HILLER ACFT UH-12E  CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 31, 4600
        TIME - 1500                    N93478              PX-  0  0  0  ASSOC CROP CTL ACTIVITY   TOTAL HOURS, 2500 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          LODI,CA                    ANGELS CAMP,CA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: HOVERING
           ROLL OVER                                                LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: MASTER AND CONNECTING RODS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - UNKNOWN/NOT REPORTED       KIND OF OPERATION - FERTILIZING (DUST)
          KIND OF CROP - PASTURE                                   TYPE OF CHEMICAL USED - DRY CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - NOT USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE-NOT USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - SLING LOADED                      TERRAIN-TYPE -HILLY
        REMARKS- NR 3 CONNECTING ROD & BOLT,PN 71087,FAILED.LNDD ON FERTILIZER BUCKET SLUNG UNDER HELICOPTER
```

## Aircraft

- Registration: [N93478](https://openairdocs.org/deregistered/N93478-2013-05-22), registration cancelled 2013-05-22, S/N 1608, built 1964 (OpenAirDocs)
- Reported make and model: HILLER ACFT UH-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

## 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 19811210080129A](https://openairdocs.org/incident/19811210080129A), Dec 10, 1981: Hiller UH12E, Angles Camp, CA, Substantial damage. Engine failed in hover during loading of sling duster hopper. Crashed on top of bucket. Engine threw a rod.

## Other investigations on N93478 (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 LAX92LA146](https://openairdocs.org/ntsb/LAX92LA146), Mar 21, 1992: Hiller UH-12E (N93478), Huron, CA, destroyed. Probable cause: A SEPARATION OF THE CONTROL ROTOR CUFF DUE TO FATIGUE.

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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