The pilot reported, prior to starting the Aeronca 7AC’s engine in preparation for flight, he verified the throttle position and chocked the right main landing gear by using his foot. After he started the engine via hand turning the propeller, the engine immediately went to a high rpm.

He attempted to hang onto the airplane to regain control and decrease the throttle, however he was unsuccessful.

The unoccupied airplane then struck a parked helicopter and a fuel station kiosk before coming to a stop at the airport in Apple Valley, Calif.

The airplane sustained substantial damage to the right wing and fuselage.

The NTSB determined the probable cause as the pilot’s failure to adequately secure the airplane while hand-starting the engine.

NTSB Identification: WPR14CA332

This August 2014 accident report is provided by the National Transportation Safety Board. Published as an educational tool, it is intended to help pilots learn from the misfortunes of others.