# NTSB Accident MIA99LA181
> **Robinson R-44** · 1999-06-11 · SEVIERVILLE, TN, USA · NONE
## Event
- **NTSB number:** MIA99LA181
- **Event ID:** 20001212X19068
- **Type:** Accident
- **Date:** 1999-06-11
- **Location:** SEVIERVILLE, TN, USA
- **Coordinates:** 35.779567, -83.610633
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 3
- **Total aboard:** 3
## Aircraft
- **Make:** Robinson
- **Model:** R-44
- **Registration:** N49669
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The induced fatigue fracture of a component in the engine-to-transmission rotor drive system resulting in a disconnection of the drive system during cruise flight caused by inadequate inspection processes by the manufacturer and the subsequent autorotative emergency descent and forced landing.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=MIA99LA181) · AI Analytics · CC0 1.0*