# NTSB Accident ATL03FA065
> **Sikorsky S-61A** · 2003-03-23 · Kimble, TN, USA · FATL
## Event
- **NTSB number:** ATL03FA065
- **Event ID:** 20030326X00395
- **Type:** Accident
- **Date:** 2003-03-23
- **Location:** Kimble, TN, USA
- **Coordinates:** 35.249721, -85.999725
## Injuries
- **Highest injury:** FATL
- **Fatal:** 1
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** Sikorsky
- **Model:** S-61A
- **Registration:** N81664
- **FAR Part:** 133
- **Engines:** 2
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The interruption of rotor system drive power due to the input free wheeling unit malfunctioning , and the pilot's operation of the helicopter in the critical area of the height-velocity curve.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ATL03FA065) · AI Analytics · CC0 1.0*