At 20:40 mountain time, a Cessna 182G struck power lines approximately four miles short of runway 32 while attempting to land at Cottonwood Airport, seriously injuring the pilot. A witness said the airplane overflew the airport normally, then circled back to land, at which time it hit the 60-foot high power lines. An FAA investigator found the rented airplanes altimeter appeared to read about 600 feet low and the airport is in an area of rising terrain.