# NTSB Accident CEN12LA470
> **YAMOKOSKI WILLIAM GLASTAR** · 2012-07-22 · Chicago, IL, USA · MINR
## Event
- **NTSB number:** CEN12LA470
- **Event ID:** 20120723X60348
- **Type:** Accident
- **Date:** 2012-07-22
- **Location:** Chicago, IL, USA
- **Coordinates:** 41.609722, -87.407775
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** YAMOKOSKI WILLIAM
- **Model:** GLASTAR
- **Registration:** N4970Y
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

Failure of the automotive engine's reduction gearbox while in cruise flight.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CEN12LA470) · AI Analytics · CC0 1.0*