What happened
On the evening of July 28, 2015, a Vans RV-6, registration LN-LLT, was prepared for departure from Ålesund Airport Vigra. The pilot, having arrived at the airport via a scheduled flight, intended to fly to Ørsta-Volda Airport Hovden. Because the aircraft's battery had insufficient charge, the pilot decided to perform a manual engine start by hand-swinging the propeller.
Prior to the start, the pilot had released the primary wing tie-downs, which used heavy concrete-filled tires for stability. To secure the aircraft, the pilot tied a single remaining tether to the tailwheel. As the engine was started, the RPM increased rapidly, causing the aircraft to move forward unexpectedly. The pilot attempted to reach the cockpit to intervene but was struck by a heavy concrete tie-down weight. The aircraft then traveled approximately 140 meters in a series of turns, eventually colliding with a parked Piper PA-28-140, registration LN-BFK. The collision caused significant damage to the wings and propeller of LN-LLT and substantial damage to the wing and fuselage of LN-BFK.