# NTSB Accident WPR09FA104
> **ROBINSON HELICOPTER R22 BETA II** · 2009-01-31 · Fillmore, CA, USA · FATL
## Event
- **NTSB number:** WPR09FA104
- **Event ID:** 20090201X10015
- **Type:** Accident
- **Date:** 2009-01-31
- **Location:** Fillmore, CA, USA
- **Coordinates:** 34.398056, -118.778053
## Injuries
- **Highest injury:** FATL
- **Fatal:** 1
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** ROBINSON HELICOPTER
- **Model:** R22 BETA II
- **Registration:** N4160A
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

An in-flight break-up while maneuvering as a result of the main rotor blades diverging from the normal plane of rotation and severing the tailboom. The underlying reason for the main rotor divergence could not be determined.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR09FA104) · AI Analytics · CC0 1.0*