# NTSB Accident WPR17FA149
> **AVIAT AIRCRAFT INC A** · 2017-07-13 · Herriman, UT, USA · FATL
## Event
- **NTSB number:** WPR17FA149
- **Event ID:** 20170713X31937
- **Type:** Accident
- **Date:** 2017-07-13
- **Location:** Herriman, UT, USA
- **Coordinates:** 40.485553, -112.173614
## Injuries
- **Highest injury:** FATL
- **Fatal:** 2
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** AVIAT AIRCRAFT INC
- **Model:** A
- **Registration:** N211AM
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The flight instructor's decision to conduct a low-altitude flight into a box canyon in high density altitude conditions and his failure to maintain airspeed while maneuvering to escape the canyon, which resulted in an exceedance of the airplane's critical angle of attack and an aerodynamic stall.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR17FA149) · AI Analytics · CC0 1.0*