# NTSB Accident GAA18CA571
> **EUROCOPTER AS350** · 2018-09-29 · Ruidoso, NM, USA · NONE
## Event
- **NTSB number:** GAA18CA571
- **Event ID:** 20181001X50042
- **Type:** Accident
- **Date:** 2018-09-29
- **Location:** Ruidoso, NM, USA
- **Coordinates:** 33.396667, -105.785835
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 3
- **Total aboard:** 3
## Aircraft
- **Make:** EUROCOPTER
- **Model:** AS350
- **Registration:** N894NA
- **FAR Part:** 135
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's failure to maintain the proper descent rate during landing. Contributing to the accident were the pilot’s failure to conduct preflight performance calculations, which resulted in his operating the helicopter in high-density altitude conditions, and his lack of experience in high-altitude, mountainous flying.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=GAA18CA571) · AI Analytics · CC0 1.0*