# NTSB Accident ERA13LA152
> **ROBINSON HELICOPTER COMPANY R44 II** · 2013-03-02 · Ciales, PR, USA · MINR
## Event
- **NTSB number:** ERA13LA152
- **Event ID:** 20130303X21011
- **Type:** Accident
- **Date:** 2013-03-02
- **Location:** Ciales, PR, USA
- **Coordinates:** 18.305833, -66.567779
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** ROBINSON HELICOPTER COMPANY
- **Model:** R44 II
- **Registration:** N834RC
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

A loss of main rotor rpm for reasons that could not be determined because an examination of the helicopter’s engine and associated components did not reveal any mechanical malfunctions or failures that would have precluded normal operation.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ERA13LA152) · AI Analytics · CC0 1.0*