On December 5, 2002, at 1945 central standard time, a Cessna 172M, N80213, operated by Flying Country Club as a rental airplane, returned with substantial damage after a local flight in the traffic pattern for runway 31 (7,001 feet by 150 feet, concrete) at Quad City International Airport, Moline, Illinois. Night visual meteorological conditions prevailed at the time of the accident. The 14 CFR Part 91 personal flight was not operating on a flight plan. The pilot reported no injuries. The local flight originated at 1915. The pilot reported he had climbed to pattern altitude after departure and was performing a left traffic pattern. The pilot stated he "saw something out of [his] right eye" while turning from base to final, and subsequently he increased engine power to full. The pilot further reported he felt a "bump." The pilot indicated he thought he had struck something with his landing gear. The pilot reported he landed the airplane and taxied back to the hanger. The pilot further reported that the right wing had been damaged. The right wing leading edge was crushed inward and contained debris consistent with a tree strike.