# Accident 20170526006839A: Bell 206B, Rockville, ID, May 26, 2017

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: May 26, 2017, 10:44 local time
- Place: Rockville, ID
- Damage: Substantial damage
- Phase of flight: Maneuver
- Operating rules: Agricultural (Part 137)
- Operator: 4NHG
- Location: 43.2769° N, 116.9961° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=43.2769&lon=-116.9961&mi=10
- Aircraft: N24FS, a cancelled registration (https://openairdocs.org/deregistered/N24FS-2021-08-28) (OpenAirDocs)
- Registry model: Bell 206B (registry code 1181511, https://openairdocs.org/model/bell-206b) (OpenAirDocs)
- Registry engine: Rolls-Royce 250-C20B (registry code 54385, https://openairdocs.org/engine/rolls-royce-250-c20b) (OpenAirDocs)
- Reported make and model: BELL 206B
- Reported engine: ALLISON 250-C20 SER
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 1
- Pilot certificates: Commercial pilot, flight instructor
- Pilot flight hours: 11,900 total, 150 in this make and model, 60 in the last 90 days
- NTSB investigation: [NTSB WPR17LA113](https://openairdocs.org/ntsb/WPR17LA113) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20170526006839A

## Narrative

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

PILOT WAS PERFORMING 137 OPERATIONS.  PILOT REPORTED A GRINDING NOISE AND A LOUD BANG, FOLLOWED BY A LOSS OF POWER.  HELICOPTER DESCENDED FROM 50 FEET WITH A HARD LANDING IN A FIELD.  PILOT WAS UNABLE TO GET OUT OF THE HELICOPTER BECAUSE OF A BROKEN LOWER BACK.  THE OPERATORS GROUND CREW REMOVED THE PILOT FROM THE HELICOPTER AND CALLED FOR FIRST RESPONDERS.

## 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 WPR17LA113](https://openairdocs.org/ntsb/WPR17LA113), May 26, 2017: Bell 206B (N24FS), Rockville, ID, substantial damage. Probable cause: The in-flight failure of the engine-to-transmission drive shaft due to a fatigue fracture of one of the KAflex flex frames caused by a loose bolt, which resulted in a total loss of engine power and a…

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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