# Accident 20210923021959A: Hiller UH-12E, Bovill, ID, September 23, 2021

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: September 23, 2021, 15:00 local time
- Place: Bovill, ID
- Damage: Substantial damage
- Phase of flight: Hover/Holding
- Operating rules: Agricultural (Part 137)
- Operator: GEVA
- Location: 46.8405° N, 116.2866° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=46.8405&lon=-116.2866&mi=10
- Aircraft: N5334V, a cancelled registration (https://openairdocs.org/deregistered/N5334V-2022-08-11) (OpenAirDocs)
- Registry model: Hiller UH-12E (registry code 4360122, https://openairdocs.org/model/hiller-uh-12e) (OpenAirDocs)
- Registry engine: Rolls-Royce 250-C20B (registry code 54385, https://openairdocs.org/engine/rolls-royce-250-c20b) (OpenAirDocs)
- Reported make and model: HILLER UH-12E
- Reported engine: ROLLS-ROYC 250-C20B
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 1
- Pilot certificates: Commercial pilot
- Pilot flight hours: 451 total, 46 in this make and model, 44 in the last 90 days
- NTSB investigation: [NTSB WPR21LA354](https://openairdocs.org/ntsb/WPR21LA354) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20210923021959A

## Narrative

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

THE HELICOPTER, OPERATING PART 137, WAS APPROXIMATELY 50' AGL AND SLOWLY APPROACHING THE LOADING ZONE TO RELOAD.  THE PILOT FELT A JOLT THEN EXPERIENCED A SUDDEN LOSS OF POWER.  THE PILOT NOTICED THE TORQUE INDICATED ABOUT 85-90%.  THE HELICOPTER LANDED AND CAME TO REST ON A DOWN-SLOPED HILLSIDE.  THE GROUND CREW DID NOT HEAR OR OBSERVE ANYTHING UNUSUAL BEFORE THE ACCIDENT.

AR: NM13202202012

## 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 WPR21LA354](https://openairdocs.org/ntsb/WPR21LA354), Sep 23, 2021: Hiller UH-12E (N5334V), Bovill, ID, substantial damage. Probable cause: A loss of helicopter control for undetermined reasons based on the available evidence for this accident.

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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