# Accident 19920321007009A: Hiller UH12E, Huron, CA, March 21, 1992

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: March 21, 1992, 11:00 local time
- Place: Huron, CA
- Damage: Destroyed
- Phase of flight: Fcd/Prec Ldg From Cruise
- Operating rules: Agricultural (Part 137)
- Operator: JAGG
- Location: 36.2002° N, 120.0900° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=36.2002&lon=-120.0900&mi=10
- Aircraft: N93478, a cancelled registration (https://openairdocs.org/deregistered/N93478-2013-05-22) (OpenAirDocs)
- Registry model: Hiller UH-12E (registry code 4360122, https://openairdocs.org/model/hiller-uh-12e) (OpenAirDocs)
- Registry engine: Lycoming VO-540 series (registry code 41534, https://openairdocs.org/engine/lycoming-vo-540-series) (OpenAirDocs)
- Reported make and model: HILLER UH12E
- Reported engine: LYC VO540C2A
- People aboard: 1
- Fatal injuries: 0
- Pilot flight hours: 5,500 total, 4,000 in this make and model, 40 in the last 90 days
- NTSB investigation: [NTSB LAX92LA146](https://openairdocs.org/ntsb/LAX92LA146) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19920321007009A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

MAIN ROTOR CUFF FAILED DUE TO FATIGUE CRACKING AND CORROSION. HELICOPTER SETTLED INTO TREES.

## The NTSB's investigation of this event (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.

## Other reports on N93478 (1)

Matched to the same aircraft by N-number and date.

- [Accident 19811210080129A](https://openairdocs.org/incident/19811210080129A), Dec 10, 1981: Hiller UH12E (N93478), Angles Camp, CA, Substantial damage. Engine failed in hover during loading of sling duster hopper. Crashed on top of bucket. Engine threw a rod.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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