Student, Oregon State University, 1919. Graduate, Universal Service Administrative Company Pilot School, 1921.
Founder, Ryan Flying Company and School Aeronautics, 1922;
founder, Ryan Airlines (1st year-round daily scheduled passenger service), 1925;
designer, started manufacturing Ryan monoplanes, Ryan Airlines (1st year-round daily scheduled passenger service), 1927;
founder, chairman, Chief Executive Officer,, Ryan Aero. Company, manufacturers personal and military-type planes, 1928. Board directors United States National Bank, San Diego, Emptor Corporation, San Diego Gas and Electric Co.
World World War II operations included volume production Ryan Training Planes and Ryan Fireball, R-1, also operation major flight and technical training centers for United States Army Air Force.
Second lieutenant, pilot Universal Service Administrative Company, 1921. Member Aircraft Industries Association, Air Force Association, Navy League, Institute Aeronautical Sciences, Society Automotive Engineers, San Diego Yacht Club, Cuyamaca Club.
Married Gladys Bowen, 1928. Children: David Claude (deceased), Jerome Donald, Stephen Michael.