# NTSB Accident WPR09CA393
> **GRUMMAN ACFT ENG COR-SCHWEIZER G-164B** · 2009-08-13 · Westley, CA, USA · NONE
## Event
- **NTSB number:** WPR09CA393
- **Event ID:** 20090812X42021
- **Type:** Accident
- **Date:** 2009-08-13
- **Location:** Westley, CA, USA
- **Coordinates:** 37.540828, -121.289367
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** GRUMMAN ACFT ENG COR-SCHWEIZER
- **Model:** G-164B
- **Registration:** N6697Q
- **FAR Part:** 137
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot’s inadequate preflight planning and preparation, and his decision to operate the airplane well in excess of its maximum gross weight.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR09CA393) · MORVS · CC0 1.0*