# NTSB Accident WPR12LA140
> **ROBINSON HELICOPTER R22 BETA** · 2012-03-15 · Palo Alto, CA, USA · MINR
## Event
- **NTSB number:** WPR12LA140
- **Event ID:** 20120318X65755
- **Type:** Accident
- **Date:** 2012-03-15
- **Location:** Palo Alto, CA, USA
- **Coordinates:** 37.460277, -122.108612
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** ROBINSON HELICOPTER
- **Model:** R22 BETA
- **Registration:** N290SH
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's improper use of the throttle grip, which resulted in the deactivation of the rpm governor and a loss of rotor rpm.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR12LA140) · AI Analytics · CC0 1.0*