# NTSB Accident CEN21LA008
> **STEPHENS WILLIAM E Quicksilver MXL-2 Sp** · 2020-10-06 · Mount Vernon, IN, USA · FATL
## Event
- **NTSB number:** CEN21LA008
- **Event ID:** 20201006102099
- **Type:** Accident
- **Date:** 2020-10-06
- **Location:** Mount Vernon, IN, USA
- **Coordinates:** 37.920396, -87.7663
## Injuries
- **Highest injury:** FATL
- **Fatal:** 2
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** STEPHENS WILLIAM E
- **Model:** Quicksilver MXL-2 Sp
- **Registration:** N2942A
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot’s exceedance of the airplane’s critical angle of attack during an aerobatic maneuver, which resulted in an aerodynamic stall and spin and loss of control. Contributing to the accident was the pilot’s decision to perform aerobatic maneuvers in an airplane that was not approved to do so.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CEN21LA008) · AI Analytics · CC0 1.0*