# NTSB Accident ERA17LA126
> **EUROCOPTER AS 350** · 2017-02-21 · San Juan, PR, USA · NONE
## Event
- **NTSB number:** ERA17LA126
- **Event ID:** 20170308X60632
- **Type:** Accident
- **Date:** 2017-02-21
- **Location:** San Juan, PR, USA
- **Coordinates:** 18.456666, -66.098335
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** EUROCOPTER
- **Model:** AS 350
- **Registration:** N413LP
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The flight instructor's incorrect manipulations of the twist grip throttle control during a practice autorotation, which resulted in an engine overspeed and subsequent fire.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ERA17LA126) · AI Analytics · CC0 1.0*