Lung cancer is the most common cause of clubbing. Clubbing often occurs in heart and lung diseases that reduce the amount of oxygen in the blood. These may include: 1  Heart defects that are present at birth (congenital).
What is a safety management system (SMS)? A safety management system is a systematic approach to managing safety, including organisational structures, accountabilities, policies and procedures.
Safety Management System (SMS) is becoming a standard throughout the aviation industry worldwide. It is recognized by the Joint Planning and Development Office (JPDO), International Civil Aviation Organization (ICAO), and civil aviation authorities (CAA) and product/service providers as the next step in the evolution of safety in aviation. SMS is also becoming a standard for the management of safety beyond aviation. Similar management systems are used in the management of other critical areas such as quality, occupational safety and health, security, environment, etc.