# NTSB Accident WPR12TA120
> **EUROCOPTER AS 350 B3** · 2012-03-01 · Napa, CA, USA · NONE
## Event
- **NTSB number:** WPR12TA120
- **Event ID:** 20120302X74637
- **Type:** Accident
- **Date:** 2012-03-01
- **Location:** Napa, CA, USA
- **Coordinates:** 38.207778, -122.275001
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** EUROCOPTER
- **Model:** AS 350 B3
- **Registration:** N341HP
- **FAR Part:** PUBU
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The flight instructor’s improper use of the collective control during a practice hovering autorotation, which resulted in a hard landing.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR12TA120) · AI Analytics · CC0 1.0*