Incident Overview
At an uncontrolled airport, a pilot was taxiing for takeoff. According to the pilot's statement, he made a radio call and visually checked both directions before entering the runway. Shortly after commencing the taxi on the runway, he observed a twin-engine airplane on short final approach. The pilot made a radio call to the approaching airplane but became concerned that the airplane did not see him. As a result, he taxied off the paved surface onto soft terrain.
Landing Gear Failure
When the pilot attempted to taxi back onto the runway, the airplane's right main landing gear collapsed. The collapse caused damage to the wing spar.
Pilot Actions
The pilot reported that he performed a radio call and a visual scan prior to entering the runway. After noticing the twin-engine aircraft, he attempted to communicate via radio. His decision to leave the paved surface was based on his concern that the other aircraft might not be aware of his presence.