On October 22, 2006, about 1011 mountain standard time, an experimental amateur built Wilson Quicksilver Sport 2S, N7081N, collided with power lines and impacted terrain near Buckeye Airport (BXK), Buckeye, Arizona. The pilot/owner operated the airplane under the provisions of 14 CFR Part 91. The private pilot and one passenger were fatally injured, and the airplane was substantially damaged. The airplane departed the Buckeye Airport about 0940 for a personal flight. Visual meteorological conditions prevailed in the area, and no flight plan had been filed. According to witnesses in the area, the airplane had been flying from west to east, south of Arlington Canal Road. As it flew low along the river, the witnesses noted a "strong wind" in the area. The airplane subsequently collided with power lines and became entangled in the power lines before impacting the ground in a nose down attitude. A responding detective from the Maricopa County Sheriff's Department reported that the airplane came to rest about 8 miles southwest of Buckeye Airport at global positioning system (GPS) coordinates of 33 degrees 18.757 minutes north latitude and 112 degrees 44.770 minutes west longitude. A Federal Aviation Administration (FAA) inspector responded to the accident site and examined the wreckage. He located damage to the leading edge of the right wing consistent with the airplane contacting power lines. The inspector noted no mechanical anomalies with the airplane or engine. PERSONNEL INFORMATION A review of FAA airman records revealed that the pilot held a private pilot certificate with a rating for airplane single engine land. He also held a third-class medical certificate issued on October 6, 2005. It had limitations that the pilot must wear corrective lenses to correct distant vision and possess glasses for near vision. No personal flight records were located for the pilot. The National Transportation Safety Board investigator-in-charge obtained the pilot's aeronautical experience from a review of the FAA airmen medical records on file in the Airman and Medical Records Center, Oklahoma City, Oklahoma. The pilot reported on his medical application that he had a total time of 371 hours, with 27 hours logged in the last 6 months. MEDICAL AND PATHOLOGICAL INFORMATION An autopsy was conducted on the pilot by the Maricopa County Coroner's office, with specimens retained for toxicological analysis. The toxicological analysis was completed by the FAA Civil Aeromedical Institute, Oklahoma City. The analysis contained negative results for carbon monoxide, cyanide, and volatiles. The report contained findings of atenolol detected in blood and liver.