# Accident 19750417008519A: Hiller UH12E, King City, CA, April 17, 1975

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: April 17, 1975
- Place: King City, CA
- Damage: Substantial damage
- Phase of flight: Fcd/Prec Ldg From Cruise
- Location: 36.2163° N, 121.1320° W: Placed by OpenAirDocs: center of King City, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=36.2163&lon=-121.1320&mi=10
- Aircraft: N9770C, a cancelled registration (https://openairdocs.org/deregistered/N9770C-1993-07-29) (OpenAirDocs)
- Registry model: Hiller UH-12E (registry code 4360122, https://openairdocs.org/model/hiller-uh-12e) (OpenAirDocs)
- Reported make and model: HILLER UH12E
- Fatal injuries: 0
- Pilot flight hours: 3,000 total, 1,000 in this make and model, 150 in the last 90 days
- NTSB investigation: [NTSB OAK75FVM27](https://openairdocs.org/ntsb/OAK75FVM27) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19750417008519A

## Narrative

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

WOBBLE PLATE PYLON ASSEMBLY FAILED.

## 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 OAK75FVM27](https://openairdocs.org/ntsb/OAK75FVM27), Apr 17, 1975: Hiller Acft UH-12E (N9770C), King City, CA, substantial damage

## Other reports on N9770C (4)

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

- [Accident 19830727039709A](https://openairdocs.org/incident/19830727039709A), Jul 27, 1983: Hiller UH12E (N9770C), Los Banos, CA, Destroyed. Engine lost power after liftoff. Helicopter roll on forced landing and burned. Found cracked loose fuel line b nut.
- [Accident 19800308005139A](https://openairdocs.org/incident/19800308005139A), Mar 8, 1980: Hiller UH12E (N9770C), Merced, CA, Substantial damage. Lost tail rotor blade on liftoff. Made hard right spiral landing. Blade fracture overstress from FOD or overspeed.
- [Accident 19760910029499A](https://openairdocs.org/incident/19760910029499A), Sep 10, 1976: Hiller UH12E (N9770C), Salinas, CA, Substantial damage. Collided with stand-pipe 12FT high. Spraying celery
- [Accident 19731119037319A](https://openairdocs.org/incident/19731119037319A), Nov 19, 1973: Hiller UH12E (N9770C), Brawley, CA, Substantial damage. Upper conrod cap bolt nr 6 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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