# NTSB Accident WPR15LA109
> **BELL/GARLICK UH 1H** · 2015-02-19 · Shelton, WA, USA · NONE
## Event
- **NTSB number:** WPR15LA109
- **Event ID:** 20150220X74821
- **Type:** Accident
- **Date:** 2015-02-19
- **Location:** Shelton, WA, USA
- **Coordinates:** 47.129444, -123.231109
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** BELL/GARLICK
- **Model:** UH 1H
- **Registration:** N166DR
- **FAR Part:** 137
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The fatigue failure of the engine-to-transmission driveshaft adapter attachment bolt due to the application of inadequate torque on the bolt during assembly.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR15LA109) · AI Analytics · CC0 1.0*