# NTSB Incident ENG23LA034
> **HALL LESTER R LEGACY** · 2023-07-20 · Rochester, MN, USA · NONE
## Event
- **NTSB number:** ENG23LA034
- **Event ID:** 20230815192877
- **Type:** Incident
- **Date:** 2023-07-20
- **Location:** Rochester, MN, USA
- **Coordinates:** 44.057343, -92.506234
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** HALL LESTER R
- **Model:** LEGACY
- **Registration:** N707MM
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** MINR
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

Mechanically distressed reduction gears causing an engine overspeed and turbine blade tensile overload and subsequent uncontainment. Contributing to the uncontainment was the operator’s use of the engine after knowingly purchasing the engine in an unserviceable condition and only conducting a periodic inspection before flight.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ENG23LA034) · AI Analytics · CC0 1.0*