PASO ROBLES, Calif., USA -- Evan Graham celebrated his 16th birthday by soloing five different aircrafts: a vintage WWII L-4 Piper Cub taildrager, a R-22 Robinson helicopter, a Cessna 150 Aerobat, a Robinson 44 Raven II and a 1965 Cessna 150-150 , setting the world record for the Youngest solo...