# NTSB Accident CEN19LA146
> **SIKORSKY S76** · 2019-05-15 · Morrilton, AR, USA · NONE
## Event
- **NTSB number:** CEN19LA146
- **Event ID:** 20190520X43445
- **Type:** Accident
- **Date:** 2019-05-15
- **Location:** Morrilton, AR, USA
- **Coordinates:** 35.1018, -92.7652
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 6
- **Total aboard:** 6
## Aircraft
- **Make:** SIKORSKY
- **Model:** S76
- **Registration:** N761AF
- **FAR Part:** 135
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The improper securing of the exhaust duct bolts, which resulted in the duct becoming unseated and substantial heat damage to the tail rotor drive shaft.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CEN19LA146) · AI Analytics · CC0 1.0*