# NTSB Accident WPR10CA028
> **EUROCOPTER AS 350 B3** · 2009-10-22 · Marana, AZ, USA · NONE
## Event
- **NTSB number:** WPR10CA028
- **Event ID:** 20091022X74024
- **Type:** Accident
- **Date:** 2009-10-22
- **Location:** Marana, AZ, USA
- **Coordinates:** 32.509723, -111.325279
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** EUROCOPTER
- **Model:** AS 350 B3
- **Registration:** N105LN
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The improper use of the throttle by the pilot receiving instruction, and the check pilot's inadequate supervision and delayed remedial action, which resulted in the collision with terrain.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR10CA028) · AI Analytics · CC0 1.0*