# NTSB Accident CEN25LA287
> **AEROTEK PITTS S-2A** · 2025-07-26 · New Holstein, WI, USA · NONE
## Event
- **NTSB number:** CEN25LA287
- **Event ID:** 20250726200634
- **Type:** Accident
- **Date:** 2025-07-26
- **Location:** New Holstein, WI, USA
- **Coordinates:** 43.943422, -88.112606
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** AEROTEK
- **Model:** PITTS S-2A
- **Registration:** N83PS
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot’s loss of direction control during landing due to an unapproved tailwheel assembly and tail spring that resulted in a tailwheel shimmy and a subsequent ground loop.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CEN25LA287) · AI Analytics · CC0 1.0*