The Airline transport Pilot License allows its holder to fly professionally as a captain or co-pilot of a jet liner or multi-crew aero plane. The ATPL involves more advanced piloting knowledge about the jetliners, turbine engines, airport operations and airline operations. It focuses on skill and experience on a higher level than the CPL with great consideration to decision making, safety, identifying and managing threat and error as well as recognizing and coping with failures and emergencies.