EASA Part 66 refers to a set of regulations established by the European Union Aviation Safety Agency (EASA) for the licensing of Aircraft Maintenance Engineers (AMEs) in Europe. It outlines the requirements for obtaining an EASA AME license, including the necessary training, experience, and examinations. Part 66 ensures that AMEs are qualified to perform maintenance on aircraft according to European safety standards. The regulations cover different license categories, such as B1 (mechanical) and B2 (avionics), providing guidelines on the knowledge and skills required for each type of aircraft maintenance.