While landing on the 25-foot wide runway, the airplane drifted to the right of the runway centerline. The pilot applied engine power in an attempt to abort the landing, but the airplane continued to the right and departed the side of the runway. The right wing subsequently contacted the ground and the main landing gear collapsed, resulting in substantial damage to the right wing. The pilot stated that there were no mechanical malfunctions or anomalies that would have precluded normal operation of the airplane, and that “better piloting” and a “wider runway” could have prevented the accident.