Incident Overview
A pilot attempting to start an aircraft's engine by hand reported that the battery was weak. After receiving an instrument clearance, the pilot decided to pull the propeller through and turned the ignition switch toward the off position. As the propeller was rotated by hand, the engine unexpectedly started. The aircraft then jumped the wheel chocks and collided with a parked Cessna 172 nearby.
Post-Incident Inspection
Following the collision, a functional check of the magneto switch was performed, which revealed that it operated normally. No other system anomalies were reported.
Sequence of Events
The pilot had received an instrument clearance prior to starting the engine. Noting the weak battery, the pilot chose to hand-prop the aircraft. With the ignition switch turned toward the off position, the pilot rotated the propeller manually. The engine started during this process, causing the aircraft to lurch forward, overcoming the chocks, and striking the stationary Cessna 172.