On September 15, 2000, at 1700 central daylight time (cdt), a Piper PA-23-250, N4584P, operated by a commercial pilot, sustained substantial damage when on landing, the airplane departed the end of a grass strip and impacted some trees, 8 miles west of Sandstone, Minnesota. Visual meteorological conditions prevailed at the time of the accident. The personal flight was being conducted under 14 CFR Part 91. No flight plan was on file. The pilot reported no injuries. The cross-country flight originated at Mora, Minnesota, at 1630 cdt. In his written statement, the pilot said that he "approached and touched down about 1/3 distance down the grass runway. [I] applied brakes, but I was unable to stop the aircraft before it rolled off the end of the runway." A Federal Aviation Administration (FAA) inspector examined the airplane at the accident location. The airplane's nose gear was broken aft. The right wing attachment and spar were bent aft. Flight control continuity was confirmed. An examination of the engine, engine controls, or other airplane systems revealed no anomalies.