# Accident 19891129047839A: Hiller UH12E, Raymond, WA, November 29, 1989

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: November 29, 1989, 15:30 local time
- Place: Raymond, WA
- Damage: Substantial damage
- Phase of flight: Pwr Off Vert Land/Autorotate
- Operating rules: Rotorcraft external load (Part 133)
- Location: 46.6409° N, 123.6295° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=46.6409&lon=-123.6295&mi=10
- Aircraft: N9762C, registered now (https://openairdocs.org/aircraft/N9762C) (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 250C20B
- People aboard: 1
- Fatal injuries: 0
- Pilot flight hours: 3,293 total, 68 in this make and model, 68 in the last 90 days
- NTSB investigation: [NTSB SEA90LA025](https://openairdocs.org/ntsb/SEA90LA025) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19891129047839A

## Narrative

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

ENGINE FAILED DURING SLING LOAD. JETTISONED LOAD. AUTOROTATED. ROLLED OVER. IMPELLER BLADES SEPARATED FROM FATIGUE.

## 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 SEA90LA025](https://openairdocs.org/ntsb/SEA90LA025), Nov 29, 1989: Hiller UH-12E (N9762C), Raymond, WA, substantial damage. Probable cause: LOSS OF ENGINE POWER DUE TO FATIGUE FAILURE OF THE IMPELLER. THE HELICOPTER WAS SUBSTANTIALLY DAMAGED AS A RESULT OF A ROLL-OVER ON UNEVEN TERRAIN.

## Other reports on N9762C (2)

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

- [Accident 20000420023539A](https://openairdocs.org/incident/20000420023539A), Apr 20, 2000: Hiller UH12E (N9762C), Stonesboro, SC, Substantial damage. (-4) On April 20, 2000, at 1015 eastern daylight time, a Hiller UH-12 helicopter, collided with trees while attempting an autorotation near Stonesboro, south…
- [Accident 19780722043039A](https://openairdocs.org/incident/19780722043039A), Jul 22, 1978: Hiller UH12E (N9762C), Livengood, AK, Substantial damage. Loss of cyclic control for undetermined reason. Collided with tree ring uncontrolled r/h turns.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.