No fatalities

AERONCA 11AC accident at Wapakoneta, OH, 5 Jul 2021

Wapakoneta, OH, United States

On July 5, 2021, an AERONCA 11AC was involved in an aviation accident near Wapakoneta, OH. No fatalities were reported. Investigators recorded the probable cause as: The pilot’s inadequate engine hand propping procedure resulting in the unoccupied airplane’s unintended movement and subsequent impact with a hangar. 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 inadequate engine hand propping procedure resulting in the unoccupied airplane’s unintended movement and subsequent impact with a hangar.

— NTSB Determination

Contributing factors

Not installed/availableCapability exceededPilot

Frequently asked questions

What happened in the 5 Jul 2021 AERONCA 11AC accident near Wapakoneta, OH?

The pilot’s inadequate engine hand propping procedure resulting in the unoccupied airplane’s unintended movement and subsequent impact with a hangar.

Were there any fatalities in the 5 Jul 2021 AERONCA 11AC accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 5 Jul 2021 involved an AERONCA 11AC, at Wapakoneta, OH.

What was the probable cause of the accident?

The pilot’s inadequate engine hand propping procedure resulting in the unoccupied airplane’s unintended movement and subsequent impact with a hangar.