# NTSB Accident WPR12LA356
> **ROCKWELL S2R** · 2012-08-14 · Royal City, WA, USA · MINR
## Event
- **NTSB number:** WPR12LA356
- **Event ID:** 20120814X10320
- **Type:** Accident
- **Date:** 2012-08-14
- **Location:** Royal City, WA, USA
- **Coordinates:** 46.883056, -119.569725
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** ROCKWELL
- **Model:** S2R
- **Registration:** N8468V
- **FAR Part:** 137
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The loss of engine power due to the separation of the No. 2 cylinder exhaust rocker boss housing, which prevented the exhaust valve from opening.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR12LA356) · AI Analytics · CC0 1.0*