# NTSB Accident WPR23LA283
> **BEECH C35** · 2023-07-20 · Rock Springs, WY, USA · MINR
## Event
- **NTSB number:** WPR23LA283
- **Event ID:** 20230724192689
- **Type:** Accident
- **Date:** 2023-07-20
- **Location:** Rock Springs, WY, USA
- **Coordinates:** 41.600733, -109.0512
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 2
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** BEECH
- **Model:** C35
- **Registration:** N620D
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

Maintenance personnel’s failure to properly secure the propeller pitch control rod castellated nut hardware, which resulted in an in-flight failure of the pitch control bearing and subsequent loss of engine RPM and thrust.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR23LA283) · AI Analytics · CC0 1.0*