# NTSB Accident WPR09CA360
> **ROBINSON R22 Beta** · 2009-07-21 · Jerome, AZ, USA · SERS
## Event
- **NTSB number:** WPR09CA360
- **Event ID:** 20090721X45121
- **Type:** Accident
- **Date:** 2009-07-21
- **Location:** Jerome, AZ, USA
- **Coordinates:** 34.795833, -112.194999
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 2
## Aircraft
- **Make:** ROBINSON
- **Model:** R22 Beta
- **Registration:** N747ER
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot’s failure to maintain adequate main rotor rpm's, and the certified flight instructor’s inadequate supervision of the flight.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR09CA360) · AI Analytics · CC0 1.0*