No fatalities

STINSON 108 accident at Seguin, TX, 8 Jul 2025

Seguin, TX, United States

On July 8, 2025, a STINSON 108 was involved in an aviation accident near Seguin, TX. No fatalities were reported. Investigators recorded the probable cause as: The pilot’s failure to turn off the magneto switch before repositioning the propeller by hand which resulted in an inadvertent engine start. This summary draws on records from NTSB; 12 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 2026-08-03Data APIEditorial standards

Probable cause

The pilot’s failure to turn off the magneto switch before repositioning the propeller by hand which resulted in an inadvertent engine start.

— NTSB Determination

Contributing factors

Incorrect use/operationPilotUnintentional use/operation