Environment-The context in which aircraft and aviation system resources (software, hardware, liveware) operate, made up of physical, organizational, economic, regulatory, political and social variables that may impact on the worker/operator.-Internal air transport environment relates to immediate work area and includes physical factors such as cabin/cockpit temperature, air pressure, humidity, noise, vibration and ambient light levels.-External air transport environment includes the physical environment outside the immediate work area such as weather (visibility/turbulence), terrain, congested airspace and physical facilities and infrastructure including airports as well as broad organizational, economic, regulatory, political and social factors Liveware-Human element or people in the aviation system. For example, flight crew personnel who operate aircraft, cabin crew, ground crew, management and administration personnel.-The liveware component considers human performance, capabilities and limitations. 5M ModelThe 5M Model comprises of Man, Machine, Medium, Mission and Management. These are the five core areas that failing factors of accident may appear in. This model is one of the most commonly used method in aviation industry to examine aviation accidents. It provides asystematic way of analyzing and focusing on areas that errors most occur within the structure of the organization.