# NTSB Accident WPR11LA094
> **ROCKWELL INTERNATIONAL S-2R** · 2011-01-10 · Oakley, CA, USA · FATL
## Event
- **NTSB number:** WPR11LA094
- **Event ID:** 20110110X53722
- **Type:** Accident
- **Date:** 2011-01-10
- **Location:** Oakley, CA, USA
- **Coordinates:** 38.077777, -121.613334
## Injuries
- **Highest injury:** FATL
- **Fatal:** 1
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** ROCKWELL INTERNATIONAL
- **Model:** S-2R
- **Registration:** N4977X
- **FAR Part:** 137
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

An in-flight collision with an unmarked meteorological evaluation tower (MET) during an aerial application flight due to the pilot's failure to see and avoid the obstacle. Contributing to the accident was the lack of visual conspicuity of the MET and the lack of information available to the pilot about the MET before the flight.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR11LA094) · AI Analytics · CC0 1.0*