AVIATION is the art or science of designing, manufacturing, operating and navigating heavier-than-air aeroplanes collectively together with personnel and equipment. The air itself is beyond our control but an imperative part of the reality, which enables the flights to be performed. The air is both a constraint and an option to be understood and respected. Aviation has evolved into a level and complexity which even the Wrights brothers would never have imagined. Commercial Aviation has adopted technology, organizational structures and regulative requirements and a global consciousness of outstanding quality and safety.