# NTSB Accident WPR12LA426
> **BELL 206 - B** · 2012-09-19 · Mammoth Lakes, CA, USA · NONE
## Event
- **NTSB number:** WPR12LA426
- **Event ID:** 20120920X05155
- **Type:** Accident
- **Date:** 2012-09-19
- **Location:** Mammoth Lakes, CA, USA
- **Coordinates:** 37.668888, -118.618614
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** BELL
- **Model:** 206 - B
- **Registration:** N222GR
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot’s inability to maintain sufficient main rotor rpm while maneuvering  in highdensity altitude conditions, which resulted in a precautionary landing and subsequent rollover.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR12LA426) · AI Analytics · CC0 1.0*