# NTSB Accident FTW97FA135
> **Teschendorf CASSUTT SPORT** · 1997-03-20 · STILWELL, OK, USA · FATL
## Event
- **NTSB number:** FTW97FA135
- **Event ID:** 20001208X07521
- **Type:** Accident
- **Date:** 1997-03-20
- **Location:** STILWELL, OK, USA
- **Coordinates:** 35.809997, -94.629653
## Injuries
- **Highest injury:** FATL
- **Fatal:** 1
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** Teschendorf
- **Model:** CASSUTT SPORT
- **Registration:** N86T
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

failure of the right wing spar and/or debonding of the right wing skin, which resulted in separation of the wing skin and a portion of the right wing, during high speed flight. Factors related to the accident were: previous wing damage and inadequate maintenance by other (unknown) personnel.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=FTW97FA135) · AI Analytics · CC0 1.0*