Clear Prop! The first command the student pilot of a piston engined aircraft learns and one that will be used before every flight thereafter. Whether you fly a Piper, Cessna or a Spitfire, Clear Prop! is a common thread. I learned to fly in 2019 from Compton Abbas Airfield in Dorset. This is my experience in gaining my Private Pilots Licence that I hope will inspire you to become a pilot too.