On February 14, 2005, about 1530 Pacific standard time, an Aeronca 7EC, N4725E, veered off the runway on the roll out after landing and collided with a tree at Alta Sierra Airport, Grass Valley, California. Aeronca Flyers, Inc., was operating the airplane under the provisions of 14 CFR Part 91. The commercial pilot, the sole occupant, was not injured; the airplane sustained substantial damage. The cross-country personal flight departed Lincoln, California, about 1445, with a planned destination of Grass Valley, California. Visual meteorological conditions prevailed, and no flight plan had been filed. The primary wreckage was at 39 degrees 06 minutes north latitude and 121 degrees 03 minutes west longitude. The pilot submitted a Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1/2). He stated that he lost directional control during the landing rollout. The airplane veered to the right off the runway, and struck a tree with the right wing. The pilot stated that the airplane and engine had no mechanical failures or malfunctions during the flight.