# NTSB Accident WPR11LA056
> **BELL 407** · 2010-11-22 · Riverdale, UT, USA · NONE
## Event
- **NTSB number:** WPR11LA056
- **Event ID:** 20101122X91647
- **Type:** Accident
- **Date:** 2010-11-22
- **Location:** Riverdale, UT, USA
- **Coordinates:** 41.165279, -111.998886
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 3
- **Total aboard:** 3
## Aircraft
- **Make:** BELL
- **Model:** 407
- **Registration:** N408UH
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's failure to maintain clearance from a highway marker sign while maneuvering.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR11LA056) · AI Analytics · CC0 1.0*