The Safety Board adopted the final report of this accident investigation, including the analysis and probable cause, on May 23, 2006. The Board's full report is available on : http://www.ntsb.gov/publictn/2006/AAB0604.pdf On December 23, 2003, about 0913 Pacific standard time, a Learjet 24B, N600XJ, registered to and operated by Pavair, Inc., Santa Monica, California, departed controlled flight and crashed near Helendale, California. The captain and the first officer were fatally injured, and the airplane was destroyed. The flight was operating under the provisions of 14 Code of Federal Regulations (CFR) Part 91 from San Bernardino County Airport (CNO), Chino, California, to Friedman Memorial Airport, Hailey, Idaho. Visual meteorological conditions prevailed for the flight, which operated on an instrument flight rules flight plan.