# NTSB Accident WPR17LA082
> **OTT 601XL-B** · 2017-03-31 · The Dalles, OR, USA · MINR
## Event
- **NTSB number:** WPR17LA082
- **Event ID:** 20170401X82718
- **Type:** Accident
- **Date:** 2017-03-31
- **Location:** The Dalles, OR, USA
- **Coordinates:** 45.618057, -121.167503
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 2
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** OTT
- **Model:** 601XL-B
- **Registration:** N610TT
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

A partial loss of engine power due to the reverse bending fatigue failure of the propeller hub bolts, which resulted from the bolts not fitting tightly into the propeller hub holes. Also causal was the pilot's decision to use improper bolts for this type of installation/operation.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR17LA082) · AI Analytics · CC0 1.0*