On December 30, 2002, about 1330 eastern standard time, a Piper PA-18A 150, N6780B, was substantially damaged while landing at Blairstown Airport (1N7), Blairstown, New Jersey. The certificated private pilot was not injured. Visual meteorological conditions prevailed, and no flight plan was filed for the local personal flight conducted under 14 CFR Part 91. The pilot stated that he was performing full-stop landings on runway 25; a 3,100-foot long, 70-foot wide, asphalt runway. During his fifth landing, after touchdown, the airplane drifted left. The airplane subsequently departed the left side of the runway, struck a snow bank, and came to rest upright. The pilot added that there were no pre-impact mechanical malfunctions with the airplane. The pilot reported a total flight experience of 1,300 hours; of which, 10 hours were in the same make and model as the accident airplane. Examination of the wreckage by a Federal Aviation Administration (FAA) inspector, revealed damage to the propeller, left wing, and fuselage. The reported wind was calm at an airport approximately 15 miles northeast of the accident site, at 1353.