The crash was reported at 10:15 a.m. Tuesday, Oct. 28, at Soboba Flight Park, 255 Soboba Road, in a rural area near San Jacinto River Park by Riverside County Fire Department officials.
Flight instructor Richard Kennedy said in a Newspro News interview that 30-year-old pilot Dave Pearson of Los Angeles was killed making a test flight. "He was testing out a new prototype wing. He attempted to do so some barrel rolls, and he got into a locked-in spiral, and he spiraled into the ground."
Full text of report here - http://www.pe.com/articles/jacinto-752919-san-crash.html
more details
http://sobobasoaring.org/forums/topic/fatality-announcement/