# NTSB Accident WPR09LA241
> **Rotorcraft Development Corp UH-1B** · 2009-05-13 · Richvale, CA, USA · SERS
## Event
- **NTSB number:** WPR09LA241
- **Event ID:** 20090513X30919
- **Type:** Accident
- **Date:** 2009-05-13
- **Location:** Richvale, CA, USA
- **Coordinates:** 39.497501, -121.77111
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** Rotorcraft Development Corp
- **Model:** UH-1B
- **Registration:** N843M
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's failure to maintain control of the helicopter during takeoff for undetermined reasons.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR09LA241) · AI Analytics · CC0 1.0*