# NTSB Accident WPR17FA161
> **APPLEGATE PANZL S331E** · 2017-07-22 · Apple Valley, CA, USA · FATL
## Event
- **NTSB number:** WPR17FA161
- **Event ID:** 20170722X84949
- **Type:** Accident
- **Date:** 2017-07-22
- **Location:** Apple Valley, CA, USA
- **Coordinates:** 34.60361, -117.132774
## Injuries
- **Highest injury:** FATL
- **Fatal:** 1
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** APPLEGATE
- **Model:** PANZL S331E
- **Registration:** N331ST
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

A fatigue failure of the left aileron control rod end during aerobatic flight, which resulted in the pilot's inability to maintain control of the airplane.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR17FA161) · AI Analytics · CC0 1.0*