# NTSB Accident WPR17LA140
> **Robinson R44** · 2017-07-03 · Bella Vista, CA, USA · SERS
## Event
- **NTSB number:** WPR17LA140
- **Event ID:** 20170703X14846
- **Type:** Accident
- **Date:** 2017-07-03
- **Location:** Bella Vista, CA, USA
- **Coordinates:** 40.669723, -122.178337
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 2
- **Minor:** 2
- **Uninjured:** 0
- **Total aboard:** 4
## Aircraft
- **Make:** Robinson
- **Model:** R44
- **Registration:** N488AS
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

A partial loss of engine power during low-altitude maneuvering for reasons that could not be determined because postaccident examinations of the engine and airframe revealed no evidence of any preaccident mechanical malfunctions or failures that would have precluded normal operation.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR17LA140) · AI Analytics · CC0 1.0*