# Accident 19910606020509A: Hiller UH12E, Huron, CA, June 6, 1991

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: June 6, 1991, 20:45 local time
- Place: Huron, CA
- Damage: Substantial damage
- Phase of flight: Pwr Off Vert Land/Autorotate
- Operating rules: Agricultural (Part 137)
- Operator: CUFG
- Location: 36.2005° N, 120.0905° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=36.2005&lon=-120.0905&mi=10
- Aircraft: N507HA, a cancelled registration (https://openairdocs.org/deregistered/N507HA-2013-03-21) (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: 15,000 total, 200 in the last 90 days
- NTSB investigation: [NTSB LAX91LA249](https://openairdocs.org/ntsb/LAX91LA249) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19910606020509A

## Narrative

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

RETURNING TO BASE AFTER SPRAYING. ENGINE FAILED AT LOW ALTITUDE CRASHED INTO TREES. FOUND BROKEN CONNECTING ROD.

## 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 LAX91LA249](https://openairdocs.org/ntsb/LAX91LA249), Jun 7, 1991: Hiller UH-12E (N507HA), Huron, CA, substantial damage. Probable cause: THAT UNKNOWN PILOT(S) IMPOPERLY USED THE THROTTLE CONTROL WHICH CAUSED AN OVERSPEED CONDITION. CONTRIBUTING TO THIS ACCIDENT WAS THE CONNECTING ROD BOLT FATIGUE FAILURE.

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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