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

Frequently asked questions

What happened in the 8 Jul 2025 STINSON 108 accident near Seguin, TX?

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

Were there any fatalities in the 8 Jul 2025 STINSON 108 accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 8 Jul 2025 involved a STINSON 108, at Seguin, TX.

What was the probable cause of the accident?

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