No fatalities

AEROTEK PITTS S-2A accident at New Holstein, WI, 26 Jul 2025

New Holstein, WI, United States

On July 26, 2025, an AEROTEK PITTS S-2A was involved in an aviation accident near New Holstein, WI. No fatalities were reported. Investigators recorded the probable cause as: 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. This summary draws on records from NTSB; 10 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 2026-08-03Data APIEditorial standards

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.

— NTSB Determination

Contributing factors

MalfunctionAttain/maintain not possibleIncorrect service/maintenance