At about 1100 eastern time, a Grumman AA5B was damaged following a loss of engine power while landing at Block Island State Airport. The pilot and three passengers suffered minor injuries. The pilot said the airplane was at an altitude of 1,200 feet when he turned onto the base leg and the engine burbled momentarily. When the pilot turned onto the final approach, the engine began coughing and sputtering. He said he stretched the glide to make the runway. The airplane struck the runway hard, bounced, and the engine then gained full power. The airplane veered off the right side of the runway and struck several airplanes parked 1,200 feet from the approach end of the runway and 500 feet to the right of it. The pilot reported he had flown from Westhampton Beach, N.Y., to the destination using only the left fuel tank.