# Accident 19931120043959A: Hiller UH12E, Salinas, CA, November 20, 1993

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: November 20, 1993, 08:45 local time
- Place: Salinas, CA
- Damage: Substantial damage
- Phase of flight: Fcd/Prec Ldg From Cruise
- Operating rules: Agricultural (Part 137)
- Operator: CBFG
- Location: 36.6708° N, 121.6108° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=36.6708&lon=-121.6108&mi=10
- Aircraft: N161HA, a cancelled registration (https://openairdocs.org/deregistered/N161HA-2004-08-30) (OpenAirDocs)
- Registry model: Hiller UH-12E (registry code 4360122, https://openairdocs.org/model/hiller-uh-12e) (OpenAirDocs)
- Registry engine: Allison 250 series (registry code 03014, https://openairdocs.org/engine/allison-250-series) (OpenAirDocs)
- Reported make and model: HILLER UH12E
- Reported engine: ALLSN 250C20
- Fatal injuries: 0
- Pilot flight hours: 17,376 total, 10,000 in this make and model, 194 in the last 90 days
- NTSB investigation: [NTSB LAX94LA054](https://openairdocs.org/ntsb/LAX94LA054) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19931120043959A

## Narrative

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

ON SWATH RUN LOUD POP. COLLECTIVE BEGAN OSCILLATE. LANDED. SPRAY BOOM CAUSED ROLLOVER. CORRODED CRACKED TORSION PIN

## 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 LAX94LA054](https://openairdocs.org/ntsb/LAX94LA054), Nov 20, 1993: Hiller UH-12E (N161HA), Salinas, CA, substantial damage. Probable cause: a fatigue failure of the torsion-tension bar pin due to fretting corrosion. A factor in this accident was an inadequate quality of material utilized in the manufacture of the pin.

## Other reports on N161HA (5)

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

- [Incident 19881001043569I](https://openairdocs.org/incident/19881001043569I), Oct 1, 1988: Hiller UH12E (N161HA), Salinas, CA, Minor damage. Helicopter idling and unoccupied on ground struck by loading truck. Pilot in truck. Main and tail rotors damaged.
- [Accident 19850705029529A](https://openairdocs.org/incident/19850705029529A), Jul 5, 1985: Hiller UH12E (N161HA), Gonzales, CA, Substantial damage. Engine power loss, landed in field, rolled onto side. Electric boost pump inlet bushing was bogus part leaking air.
- [Accident 19841005054429A](https://openairdocs.org/incident/19841005054429A), Oct 5, 1984: Hiller UH12E (N161HA), Firebaugh, CA, Substantial damage. Spray boom struck cotton plant stalks during spray run. Pitched helicopter nose down, impacted ground.
- [Accident 19811203077569A](https://openairdocs.org/incident/19811203077569A), Dec 3, 1981: Hiller UH12E (N161HA), Nashville, OR, Substantial damage. Fueled helicopter from unfiltered fuel truck drain hose. Engine quit in hover due to water in fuel, fill lid leak.
- [Accident 19790511020589A](https://openairdocs.org/incident/19790511020589A), May 11, 1979: Hiller UH12E (N161HA), Independence, OR, Substantial damage. Ag copter crashed out of control in a wheat field.. Found evidence push rod failed.

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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