# NTSB Accident CEN15FA171
> **EUROCOPTER AS 350 B2** · 2015-03-13 · Eufaula, OK, USA · FATL
## Event
- **NTSB number:** CEN15FA171
- **Event ID:** 20150313X72113
- **Type:** Accident
- **Date:** 2015-03-13
- **Location:** Eufaula, OK, USA
- **Coordinates:** 35.366664, -95.800003
## Injuries
- **Highest injury:** FATL
- **Fatal:** 1
- **Serious:** 2
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 3
## Aircraft
- **Make:** EUROCOPTER
- **Model:** AS 350 B2
- **Registration:** N919EM
- **FAR Part:** 135
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** NDRK
- **Weather:** Unk
## Probable cause

The flight's inadvertent encounter with night instrument meteorological conditions, which resulted in the pilot turning the helicopter and subsequently descending into trees and terrain due to spatial disorientation.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CEN15FA171) · AI Analytics · CC0 1.0*