# NTSB Accident WPR09CA114
> **SCHWEIZER G-164B** · 2009-02-12 · Buttonwillow, CA, USA · NONE
## Event
- **NTSB number:** WPR09CA114
- **Event ID:** 20090212X32122
- **Type:** Accident
- **Date:** 2009-02-12
- **Location:** Buttonwillow, CA, USA
- **Coordinates:** 35.399166, -119.474166
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** SCHWEIZER
- **Model:** G-164B
- **Registration:** N3626T
- **FAR Part:** 137
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

A loss of engine power due to the number four cylinder base nuts becoming loose, allowing the cylinder to detach from the engine case. Contributing to the accident was the pilot's impaired visibility due to smoke during the forced landing.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR09CA114) · AI Analytics · CC0 1.0*