Medallion Foundation http://medallionfoundation.org Aviation Safety Through Systems Enhancements. Fri, 31 Aug 2012 en-US hourly 1 New Part 135 Training Requirement Must Be Met By March 22, 2013 http://medallionfoundation.org/press-releases/medallion-foundation-press-release-2012-08-31.asp Fri, 31 Aug 2012 Medallion Foundation http://medallionfoundation.org