# NTSB Accident WPR13FA417
> **BELL UH-1V** · 2013-09-21 · Cordes Lakes, AZ, USA · FATL
## Event
- **NTSB number:** WPR13FA417
- **Event ID:** 20130921X71327
- **Type:** Accident
- **Date:** 2013-09-21
- **Location:** Cordes Lakes, AZ, USA
- **Coordinates:** 34.395278, -112.046943
## Injuries
- **Highest injury:** FATL
- **Fatal:** 2
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** BELL
- **Model:** UH-1V
- **Registration:** N22490
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's improper maintenance on the helicopter’s main rotor blade pitch control system, which resulted in an in-flight loss of main rotor blade pitch control, mast bumping, and mast failure.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR13FA417) · AI Analytics · CC0 1.0*