# NTSB Accident CHI07LA127
> **Beech S35** · 2007-04-30 · Brookfield, MO, USA · NONE
## Event
- **NTSB number:** CHI07LA127
- **Event ID:** 20070509X00537
- **Type:** Accident
- **Date:** 2007-04-30
- **Location:** Brookfield, MO, USA
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** Beech
- **Model:** S35
- **Registration:** N8820M
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

Improper maintenance by maintenance personnel by not properly torquing cylinder thru-bolts.  The loose stud nuts which resulted in the separation of the cylinder and the crop and ditch were factors.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI07LA127) · AI Analytics · CC0 1.0*