61-9211.2 is a part of the EAO, or European Air Operations, which is a set of instructions, regulations, and procedures that govern flying operations and ground operations in Europe. It consists of specific instructions for pilots and ground personnel, as well as a collection of regulations and procedures related to airspace management, flight planning and operations, rescue and search operations, communications, and general aircraft operations, such as refueling, operation of navigation and instrumentation equipment, and meteorology. The EAO is designed to promote a safe and efficient European aviation system.