# NTSB Accident WPR16FA067
> **FLIGHT DESIGN GMBH CTLS** · 2016-02-11 · Springville, CA, USA · FATL
## Event
- **NTSB number:** WPR16FA067
- **Event ID:** 20160210X12541
- **Type:** Accident
- **Date:** 2016-02-11
- **Location:** Springville, CA, USA
- **Coordinates:** 36.094722, -118.873336
## Injuries
- **Highest injury:** FATL
- **Fatal:** 2
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** FLIGHT DESIGN GMBH
- **Model:** CTLS
- **Registration:** N911TS
- **FAR Part:** PUBU
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's failure to maintain adequate airspeed while maneuvering at low altitude in hilly terrain, which resulted in the airplane's wing exceeding its critical angle-of-attack and a subsequent aerodynamic stall. Contributing to the accident were the pilot's inability to recognize the rising terrain due to the sun glare and the pilot's operation of the airplane in excess of its gross weight.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR16FA067) · AI Analytics · CC0 1.0*