# NTSB Accident CEN18FA258
> **Bell 47G** · 2018-07-06 · Arlington, IN, USA · FATL
## Event
- **NTSB number:** CEN18FA258
- **Event ID:** 20180706X04105
- **Type:** Accident
- **Date:** 2018-07-06
- **Location:** Arlington, IN, USA
- **Coordinates:** 39.633056, -85.635833
## Injuries
- **Highest injury:** FATL
- **Fatal:** 1
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** Bell
- **Model:** 47G
- **Registration:** N96195
- **FAR Part:** 137
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The inflight separation of the upper transmission due to the thread failure of transmission housing attachment bolts, which were installed on the helicopter with thread damage from a prior installation.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CEN18FA258) · AI Analytics · CC0 1.0*