# NTSB Accident CEN23LA023
> **STEPHEN J HOFFMAN MS-500** · 2022-10-29 · Houston, TX, USA · MINR
## Event
- **NTSB number:** CEN23LA023
- **Event ID:** 20221031106231
- **Type:** Accident
- **Date:** 2022-10-29
- **Location:** Houston, TX, USA
- **Coordinates:** 29.60559, -95.166497
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** STEPHEN J HOFFMAN
- **Model:** MS-500
- **Registration:** N778MS
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot’s failure to secure the magneto switch before attempting to hand rotate the engine which resulted in an inadvertent engine start, a runaway airplane, and subsequent impact with parked airplanes. Contributing to the accident was the failure to properly secure the airplane with chocks.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CEN23LA023) · AI Analytics · CC0 1.0*