# NTSB Accident WPR23LA149
> **STEVENS KELLY C RV-7** · 2023-04-09 · Morgan, UT, USA · NONE
## Event
- **NTSB number:** WPR23LA149
- **Event ID:** 20230410107032
- **Type:** Accident
- **Date:** 2023-04-09
- **Location:** Morgan, UT, USA
- **Coordinates:** 41.008125, -111.68074
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** STEVENS KELLY C
- **Model:** RV-7
- **Registration:** N17NK
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot/builder improperly torqued the propeller attachment bolts while reinstalling the propeller, which resulted in the fatigue failure of the bolts and the separation of the propeller assembly.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR23LA149) · AI Analytics · CC0 1.0*