Introduction and definitions: Initial and continuing airworthiness; aviation maintenance concepts and principles. Regulatory context: The regulatory frameworks; certifying design, modifications and manufacturing of aircraft and aeronautical products; regulation and management of continuing airworthiness and maintenance, repair maintenance certifying requirements and training; safety management principles; Practice: Airframe and engine maintenance programmes principles; development, planning and implementation of maintenance programmes; technology in aircraft maintenance. Modern challenges: Ageing aircraft airworthiness sustainment; harmonising the global practice in aircraft maintenance; distinctions and similarities between military and civil aviation in airworthiness and maintenance management. Spaceworthiness: From airworthiness to spaceworthiness, FAA rules, commercial space transportation, licensing, launch safety responsibilities, flight safety analysis, ground safety, experimental permit, advisory material,