On September 5, 2015, about 1538 eastern daylight time, a special-light-sport, weight-shift-control Evolution Aircraft Revo, N2264X, was substantially damaged when it impacted the backyard of a residence, following a loss of control while circling a nearby beach at low altitude in Laconia, New Hampshire. The sport pilot was fatally injured. The aircraft was registered to and operated by a private individual as a personal flight conducted under the provisions of 14 Code of Federal Regulations Part 91. Visual meteorological conditions prevailed and no flight plan was filed for the local flight that departed Laconia Municipal Airport (LCI), Laconia, New Hampshire, about 1530.Several witnesses reported that the aircraft circled very low over the beach and looked like it was going to land. It then banked sharply left and descended nose-down near a residence. Two of the witnesses reported a sputtering or loss of engine noise, while five witnesses reported continuous or an increase in engine noise. The wreckage came to rest inverted. Examination of the wreckage by a Federal Aviation Administration (FAA) inspector revealed substantial damage to both wings and the fuselage. The pilot's four-point restraint system remained intact. The inspector noted that fuel remained in the two carburetor fuel bowls and in the single-fuel tank. He was able to rotate the propeller by hand, confirm valve train continuity and attain thumb compression on all cylinders. Under the direction of the FAA inspector, a mechanic subsequently recovered the aircraft and was able to verify control continuity. Once he replaced a water pump that had sustained impact damage, he was able to successfully test-run the engine on the airframe. Review of the sport pilot's logbook revealed that he had accumulated about 102 hours of flight experience; of which, 91 hours were in the same make and model as the accident aircraft. About 7 of the hours were flown during the 30-day period preceding the accident. Additionally, the sport pilot had recently ferried the accident aircraft from Florida to New Hampshire, but had not recorded that trip in his logbook. Review of the NTSB database revealed that the sport pilot was involved in a landing accident in the same make and model aircraft on April 20, 2014. The probable cause of that accident was his failure to maintain control during a go-around (ERA14CA203). The two-seat, high-wing, fixed tricycle gear, weight-shift-control aircraft, serial number 000594, was manufactured in 2013 and issued a special-light-sport airworthiness certificate by the FAA. It was powered by a Rotax 912ULS, 100-horsepower engine, equipped with three-blade composite propeller. The aircraft logbooks were not recovered and no determination could be made regarding the aircraft's most recent inspection. The aircraft was equipped with an electronic flight information system (EFIS), which was retained and forwarded to the NTSB Vehicle Recorder Laboratory, Washington, DC. Data were successfully downloaded from the EFIS and plotted. Although no engine data were recovered, a GPS plot of the accident flight was generated. Review of the plot revealed that the aircraft departed LCI at 1530, climbed to an altitude about 1,300 feet above ground level (agl), and flew west for about 1 minute. It then turned north and paralleled the shore of Lake Winnipesaukee, descended to about 300 feet agl, where it remained for the majority of the flight. The aircraft completed one left circuit near a beach uneventfully. During a second, wider left circuit, the aircraft descended to about 100 feet agl or less over the lake, where it remained until impacting the backyard of the residence approximately 2 minutes later. The pilot succumbed to his injuries on September 6, 2015 and an autopsy was not performed; however, the New Hampshire Medical Examiner's report noted the cause of death as "Complications of Blunt Head Trauma." Toxicological testing was performed on the pilot by the FAA Bioaeronautical Science Research Laboratory, Oklahoma City, Oklahoma. Review of the test results revealed: "Etomidate detected in Blood Metoprolol detected in Blood" Etomidate was consistent with emergency treatment the pilot received in the hospital and Metoprolol was an antihypertensive that was not impairing. The recorded weather at LCI, at 1535, included wind from 190 degrees at 4 knots, visibility 9 miles and clear sky.