# Accident 19890309003449A: Hiller UH12E, Golden, CO, March 9, 1989

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: March 9, 1989, 14:55 local time
- Place: Golden, CO
- Damage: Substantial damage
- Phase of flight: Hovering
- Operating rules: General operating rules (Part 91)
- Operator: CKOA
- Location: 39.7305° N, 105.1992° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=39.7305&lon=-105.1992&mi=10
- Aircraft: N7411N, a cancelled registration (https://openairdocs.org/deregistered/N7411N-2018-01-08) (OpenAirDocs)
- Registry model: Hiller UH-12E (registry code 4360122, https://openairdocs.org/model/hiller-uh-12e) (OpenAirDocs)
- Reported make and model: HILLER UH12E
- Reported engine: LYC VO540C2A
- People aboard: 2
- Fatal injuries: 0
- Pilot flight hours: 1,593 total, 350 in this make and model, 35 in the last 90 days
- NTSB investigation: [NTSB DEN89LA084](https://openairdocs.org/ntsb/DEN89LA084) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19890309003449A

## Narrative

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

LOST TAIL ROTOR EFECTIVENESS WHILE HOVERING AFTER A PRACTICE PINNACLE APPROACH. SET IT DOWN, TAIL ROTOR HIT A ROCK.

## 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 DEN89LA084](https://openairdocs.org/ntsb/DEN89LA084), Mar 9, 1989: Hiller UH-12E (N7411N), Golden, CO, substantial damage. Probable cause: IMPROPER IN-FLIGHT PLANNING/DECISION BY THE CFI WHICH RESULTED IN LOSS OF TAIL ROTOR EFFECTIVENESS AND LOSS OF DIRECTIONAL CONTROL. CONTRIBUTING FACTORS WERE HIGH DENSITY ALTITUDE, TAILWIND, AND…

## Other reports on N7411N (4)

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

- [Incident 20080807847179I](https://openairdocs.org/incident/20080807847179I), Aug 7, 2008: Hiller UH12E (N7411N), Viroqua, WI, Minor damage. (-23) On August 7, 2008, at 1604 local, N7411N, a Hiller UH-12/E flown by [privacy data omitted] (certificated #[privacy data omitted]) just completed spraying…
- [Incident 19850911056569I](https://openairdocs.org/incident/19850911056569I), Sep 11, 1985: Hiller UH12E (N7411N), Broomfield, CO. Pilot flew helicopter in non movement area for 17 minutes without clearence from tower.
- [Incident 19850417022209I](https://openairdocs.org/incident/19850417022209I), Apr 17, 1985: Hiller UH12E (N7411N), Broomfield, CO, Minor damage. Developed high rate of descent during autorotation to power recovery. Struck ground tail low.
- [Accident 19760810026679A](https://openairdocs.org/incident/19760810026679A), Aug 10, 1976: Hiller UH12E (N7411N), Kennewick, WA, Substantial damage. Aux fuel pump not used at time eng-driven pump failed. Op manual states pump should have been on.

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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