September 6, 2007 The aeronautical world is mourning the loss of visionary inventor, designer and engineer Dr Paul MacCready, who passed away on 28 August 2007. Among his very long list of accomplishments, he was most widely known as the "father of human-powered flight". Using a craft he created, the Gossamer Condor, MacCready made the first sustained, controlled flight by a heavier-than-air craft powered solely by its pilot's muscles.