# NTSB Accident WPR22LA174
> **BELL HELICOPTER TEXTRON CANADA 407** · 2022-05-11 · Livermore, CA, USA · SERS
## Event
- **NTSB number:** WPR22LA174
- **Event ID:** 20220511105065
- **Type:** Accident
- **Date:** 2022-05-11
- **Location:** Livermore, CA, USA
- **Coordinates:** 37.699413, -121.70852
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** BELL HELICOPTER TEXTRON CANADA
- **Model:** 407
- **Registration:** N999GH
- **FAR Part:** 133
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

Loss of engine power due to the pilot inadvertently selecting engine IDLE mode while in flight, which reduced rotor and engine speed to a level that could not sustain flight.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR22LA174) · AI Analytics · CC0 1.0*