Wabash, IN, USA
N9171E
AERONCA 11AC
The pilot was turning the engine through when it started unexpectedly. He attempted to get back into the cockpit to shut the engine down but was unsuccessful. The airplane self-taxied in an arc and struck the hangar before coming to a stop. The airplane sustained substantial damage to the right wing. The pilot noted that the magneto switch was in the BOTH position when he checked it after the accident, and he did not recall turning it on.
The pilot’s failure to properly secure the airplane before beginning the engine start sequence.
Source: NTSB Aviation Accident Database
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